The festive season is here again and it can be a time to think about a gift for the astronomer in your life or as treat for yourself.
To help, we’ve put together a small selection of popular gift ideas that are available from our network of Baader Planetarium dealers, our ourselves.
Gift Vouchers
Unsure of what to buy as a festive gift for someone interested in astronomy?
We offer a choice of gift vouchers that are the ideal solution for all astronomy enthusiasts at all levels. The vouchers are available in the following values:
- [product sku="9003200"]
- [product sku="9003201"]
- [product sku="9003202"]
The vouchers can be used for all products in our Baader www.baader-planetarium.com (and also Celestron: www.celestron.de) online shops.
After your purchase you will receive a high-quality printed voucher by post for to give personally. However if you find that time is short we can also provide it as a PDF by e-mail on request so you can send electronically or print out yourself.
Cable Management: A fun gift for tidy cabling
[product sku="2455055"]
Don’t let a tangled mess of cables steal the magic of the night sky. With these cheerful Baader Planetarium-logo-labelled hook and loop [product sku=”2455055”], you can wrap up loose leads like ribbons on a cosmic gift, keeping your setup neat and more importantly safe.
These reusable velcro cable ties which are available in a pack of ten add a touch of order to the any cable chaos, securing power cords and camera cables so they don’t snag during your celestial . Think of them as little helpers – like elves for your optics – ensuring that every wire stays snug and tidy while you unwrap the wonders of the universe.
Keep your optics clean: Baader Optical Wonder Cleaning Set
Telescopes, eyepieces or other optical accessories will not remain in pristine “factory clean” condition for long. When exposed to the environment dust and moisture can settle on the corrector plate of an SCT/EdgeHD telescope, refractor or camera lens, eyelash grease on eyepieces, and fingerprints can accidently be put on eyepiece lenses and filters. Your optics will need to be cleaned over the years if they are used regularly.
To help gently and safely clean such optics, the [product sku="2905009"] continues to be a popular choice.
The Optical Wonder set consists of 100ml of Optical Wonder cleaning fluid in a spray bottle and super microfiber 25cmx25cm soft cleaning cloth and working together will clean without scratching.
The fluid will safely remove dirt, oils and finger prints and dries without leaving any residue. It also forms a protective layer to protect the optical surface from the formation of bacteria and fungi too. The bottle uses fine sprayer so the liquid will last a long time. The microfiber cloth is soft so will not scratch optics and it also can be machine washed too.
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[product sku="2905009"]
Filter Storage and organisation
Over a period of time you may accumulate many filters for visual and/or imaging use such as nebula/light pollution filters, colored filters for viewing the planets and narrowband filters for imaging.
For the astronomer who loves to keep things neat, tidy and organised, the [product sku="2459253"] makes a thoughtful Christmas present.
They are designed to safely store and protect filters up to 65mmx65mm and features a clever modular design that allows the boxes to be stacked securely on all sides - both vertically on top of each other and/or side-by-side horizontally securely. The filter drawer has internal removable foam pads to protect the filter and there is a small lip on the front in order to pull the drawer open to easily acces the filter.
The boxes are the kind of practical accessory that brings peace of mind knowing your precious filters are safe and a touch of festive organization to any stargazer’s toolkit.
A cometary “highlighter”
Recently there have been a number of comets visible in the night sky such as Comet C/2025 ATLAS, C/2025 A6 Lemmon. There was also comet C/2024 G3 Atlas and C/2020 F3 Neowise which became visible to the naked eye in the summertime evenings.
Unlike broadband general-purpose filters, the Baader C2 Swan-Band Comet Filter, which is available in 1.25” and 2” sizes for visual and imaging use, has been specially produced which isolates the two brightest C2 emission lines at 511 nm and 514 nm, known as the Swan bands, while blocking the nearby OIII line that can otherwise dilute contrast. This selective transmission makes faint delicate gaseous structures stand out against the background sky.
For those interested in studying comets and are looking for a truly unique present this Christmas the Baader C2 Swan-Band filter could be for you!
Studying our Sun: Eclipses and solar observation
Although the Sun has just passed solar maximum, it will continue to be active for a while. This activity can be seen for example by the number of sunspots being visible on the Sun’s “surface” and auroral activity too. In 2026, 2027 and 2028 there will also be solar eclipses visible from Europe. The first of these in 2026 will be a total eclipse which will span from western Iceland down the Atlantic and across northern and central spain with totality lasting ~2m18s (Iceland region) to ~1m40s in Spain. With such solar activity and upcoming events this makes it a perfect time for solar observation!
Solar Eclipses in Spain – 2026, 2027 and 2028 18. June 2025 - For years now our colleagues have been hunting for the next Solar eclipse in the most remote places of the World. Please review our previous blog posts on AstroSolar.com, for example: 2015: Solar Eclipse Adventrue… Weiter lesenBaader Solar Viewer Glasses
The Baader Eclipse Solar Viewer Glasses are made with their renowned AstroSolar® Silver/Gold Film, offering crystal-clear, views of the Sun and the partial phases of a solar eclipse while blocking 100% of harmful UV and IR radiation. Lightweight, foldable, and CE/ISO certified, they’re the perfect companion for the upcoming solar eclipses.
They are available in three different designs - our standard and new neutral black and neutral white. Pop them into a Christmas stocking and you’ll be giving not just a gift, but a front-row seat to one of nature’s most spectacular shows.
[product sku="2420003"]
[product sku="2420002"]
Baader Solar Projection Screen Viewer
The [product sku="2420400"] transforms solar observing into a safe experience turning the Sun into a crisp white-light image that can be enjoyed on your own or as a shared experience in groups.
Crafted as a clever cardboard kit with pre-cut parts and adhesive strips, the BSPS is both lightweight and sturdy, designed for quick assembly and easy use with refractor telescopes fitted with star diagonals. Once set up, it projects a bright solar disk—large enough for classrooms, outreach events, or casual backyard astronomy—revealing sunspots and solar activity in real time. Optimized for focal ratios of f/6 or slower, and compatible with Baader’s OPFA eyepiece projection adapters (other T-2 projection adaptors can also be used), it offers flexibility for different telescope setups while maintaining safety as its core principle. By shifting the act of solar viewing from a solitary pursuit to a communal one, the BSPS embodies Baader’s mission of making astronomy accessible, educational, and engaging for all. A great christmas gift for the avid solar astronomer!
Red-dot radiance for clear nights
The [product sku="2957315"] is a versatile zero-power finderscope with a wide 40mm aperture that makes aiming effortless. By day, it doubles as a sighting tool for terrestrial use, while at night it projects a crisp, adjustable brightness red dot that helps you align your telescope with celestial targets in seconds. Its robust rugged water resistant, fog-proof and shockproof housing (originally designed for military field use) shields the multicoated optics from stray light and weather, ensuring reliable performance in all conditions. The finder comes with front and rear jump cover which, when both are closed, allow the finder to be used as a pin-hole projection solar finder. It comes with a bracket to fit most Celestron/SkyWatcher/Vixen finder bases and an additional base to fit onto additional other telescope tubes. Sky Surfer V's design and functionality accommodates both astronomical and daytime applications and it becomes a true “all-season navigator" for daylight exploration and starlit discovery.
[product sku="2957315"]
Celestial Carousel: Baader Q‑Turret and Eyepiece Collection
Our selected eyepiece offering for a Christmas gift is our [product sku="2957000"]. Imagine your holiday stargazing wrapped in a touch of elegance: the Baader Q-Turret with Classic Ortho and Plössl eyepiece set is like a celestial carousel, ready to spin you from crisp planetary detail to wide-field wonder with a simple turn.
This thoughtfully designed kit combines three Baader Classic Orthoscopic eyepieces (6mm, 10mm, 18mm) with a 32mm Classic Plössl, plus the useful Q-Turret 4-eyepiece revolver and unique versatile 1.3x/2.25x Q-Barlow. The Q-turret allows you to rotate seamlessly between eyepieces, eliminating the hassle of swapping them in and out of your telescope focuser (and storing) during an observing session. Each eyepiece is fully multi-coated for high transmission ensuring bright, high contrast, sharp crisp views with excellent color fidelity. The Ortho’s are ideal for observing lunar detail and the planets, while the Plössl provides a lower power wider field of view for deep-sky exploration. With the included Barlow, the set expands to cover focal lengths from 2.7mm up to 32mm, offering a complete spectrum of magnifications in one package. The eyepieces and turret comes in a nicely designed colorful and elegant metal presentation storage box offering durable protection while letting you see the contents at a glance through its clear window. The Baader Q-Turret with Classic Ortho and Plössl eyepiece set is a versatile, all-in-one solution for effortless stargazing.
At the moment (and until 31st December) Baader eyepieces are on special offer with 20% off which represent a significant saving making it an ideal time to purchase for a festive present and add to your eyepiece collection.
Double the magic under the Christmas sky - Maxbright II Binoviewers
Using a telescope with a single eyepiece and one eye is the most common way of viewing the Moon, planets and deep sky objects. However being able to view celestial objects with two eyes provides a more natural, comfortable, and immersive experience and also can reduce eye strain and improve detail perception.
Give the gift of two-eyed stargazing this Christmas with the [product sku="2456460"] where they can transform ordinary telescope sessions into breathtakingly immersive experiences, delivering crisp high-contrast views of the Moon, planets and deep-sky objects with natural depth and comfort. The MKII model features include large 27mm prisms with 7-layer anti-reflection coatings on all glass-to-air surfaces and new ClickLock eyepiece clamps with dioptre adjustment. The binoviewers use the Baader Astro T-2 system to allow them to be connected to a telescope in many different ways such as with 1.25”/2” nosepiece, Zeiss micro-bayonet for quick release, or directly coupled to a Baader T-2 diagonal. They can be used with the Baader Glasspathcorrectors which removes colour aberrations caused by the binoviewer prisms when used with fast telescopes and they move the focus point outward allowing you to use the Binoviewers with telescopes that have short backfocus. The Maxbright II comes supplied with a case and Zeiss Microbayonet. They are also available in sets which include 1.25” or 2” nosepieces, diagonal, glasspathcorrectors and eyepieces.
Don't forget - you need to "double up" on your eyepieces for use with the binoviewer! The (currently on 20% off offer) Baader Morpheus eyepiece range with their long 20mm eye relief and 76 degree apparent field for immersive space-walk viewing were designed an optimized for binoviewing!
Wrapped up as a Christmas present, they’re not just an accessory—they’re a gateway to unforgettable nights of cosmic exploration.
We would like to take this opportunity to wish you all a very Merry Christmas and best wishes for 2026 - and clear skies too!
The festive season is here again and it can be a time to think about a gift for the astronomer in your life or as treat for yourself. To help, we’ve put together a small selection of popular gift ideas that are available from our network of Baader Planetarium dealers, our ourselves. Gift Vouchers Unsure of […]
Baader Planetarium is supporting a major international initiative to expand global space surveillance capabilities. The US-based company Slingshot Aerospace is enhancing the United Kingdom’s satellite-based observation infrastructure on behalf of the UK Space Agency – relying on technology from Germany. Our proven AllSky Domes form the foundation for several new observation stations across five continents.
Technology Partner for Space Surveillance
Slingshot Aerospace is one of the world’s leading providers of AI-enabled solutions for satellite tracking, space traffic management, and orbital simulation. For the current expansion of the UK’s tracking capabilities, Baader Planetarium is supplying 13 AllSky Domes specifically engineered for continuous operation in demanding environments.
The domes ensure reliable, fully automatic / autonomous operation of sensitive instruments – regardless of climate, weather, or time of day. From extreme cold zones to tropical regions, they provide ideal operating conditions and offer long-term protection for the deployed sensors against environmental influences.
“We are very pleased that our systems contribute to the future space surveillance infrastructure of the United Kingdom,” says Johannes Baader, CEO of Baader Planetarium. “The AllSky Domes are designed to provide stable, precise, and low-maintenance infrastructure anywhere in the world.”
Why Space Surveillance Is Becoming Increasingly Important
Low Earth orbit is more densely populated than ever before. Around 12,000 active satellites currently orbit the Earth – and with the rapid growth of commercial constellations, this number could rise to more than 100,000 by 2030. As a result, the risk of collisions or break-ups that create new debris and endanger operational satellites is increasing.
International partnerships such as that between Slingshot Aerospace and the UK Space Agency are essential to detect potential hazards at an early stage, make accurate orbit predictions, and ensure safe operations in space. Modern sensor technologies and robust ground infrastructure play a key role in this effort.
The project will create additional observation capacity at multiple international sites. This new infrastructure expands the geographical coverage of the existing Slingshot network and enhances the ability to evaluate orbital activity in real time.
“Through our partnership with the UK Space Agency, we are laying a solid foundation for expanding the UK’s space technology capabilities”, explains Tim Solms, CEO of Slingshot Aerospace.
German Expertise for Global Space Safety
Slingshot Aerospace currently operates more than 200 optical sensors at 21 sites across five continents. The current project will further expand this network. The integration of Baader Planetarium’s AllSky Domes ensures a long-term reliable, modular infrastructure that remains scalable for future national and international satellite observation solutions.
With this project, Baader Planetarium strengthens its position as a leading provider of robust high-tech solutions for industrial ground stations, research institutions, and space-related applications. From classical observatories to advanced SSA / SLR / LaserCom installations – partners worldwide rely on the durability, quality, and precision of our systems.
www.baader-observatories.com
Baader Planetarium is supplying 13 AllSky Domes for an international space surveillance project led by Slingshot Aerospace on behalf of the UK Space Agency. The robust domes expand the global network of optical sensors and provide new infrastructure for the safe monitoring of satellites and orbital activity.
The Royal Holloway University of London (RHUL) is located in Egham, Surrey, about 30km west of central London. It is a prestigious research-intensive university with a rich history and a stunning campus with a strong research profile, and diverse student community of nearly 13,000 students across arts, humanities and sciences including physics and astronomy. Baader Planetarium were honoured to be chosen to supply and install a substantial upgrade to their existing telescope which resides in a metal 3.8m diameter observatory slit-type dome on the roof of their physics department’s Tolansky building.
Discussions about a telescope and accessories that would be suitable for astronomical teaching and research projects began shortly after the beginning of 2025. After a number of meetings with departmental staff the following setup was chosen:
- Telescope System:
- PlaneWave CDK17 and L-500 Direct Drive Mount mounted atop an Equatorial Wedge.
- Series 5 controller for operating the focuser, telescope fans and internal heater pads
- Series 5 focuser
- The whole telescope would be fixed on top of a [product sku="2451188"] which would be attached to the top of the observatory's existing concrete pier using a Baader levelling flange base.
- An imaging system for photometry, astrometry and astrophotography :
- [product sku="1941100"] with a [product sku="1942101"]
- [product sku="2961755"].
- For spectroscopy projects :
- [product sku="2458550"]
- [product sku="2458557"], [product sku="2458556"], [product sku="2458559"] for different resolutions
- The DADOS was also equipped with a [product sku="2458645"] to bring the telescope to f/10 for best use with DADOS
- To image spectra a [product sku="1941500"] is attached and a Moravian C0 mono USB camera for slit viewing and guiding.
- Visual use for occasional public and outreach events :
- appropriate M68 ClickLock adaptors and [product sku="2956268"]
- [product sku="2954200"].
In order to avoid having to keep removing and re-mounting the imaging, spectroscopic and visual equipment, the [product sku="2451300"] was also added to their equipment list. The telescope with all the equipment was set up, balanced, adjusted and tested at our facility in Mammendorf in the summer ready to be shipped and installed later in the year.
The telescope was delivered at RHUL in early October and the installation took place just after delivery over two days and just in time for an important University-wide open day event for prospective students.
The first day involved unpacking the equipment, sorting and preparing it all ready for installation the following day. The accessories were taken to a teaching laboratory where all the necessary and most up-to-date software and drivers were installed and configured on the observatory PC and tested and the photometric filters were installed in the filter wheel. Time was also spent demonstrating the operation of various software applications to some of the staff.
The next task centered around the observatory's existing short concrete pier onto which the whole CDK400 would be mounted. Measurements of this pier made earlier in the year showed that it would be suitable to allow the Baader pier adaptor to be attached with the wedge and support the telescope. It was also found that its height was also suitable to allow the telescope to reach the minimum required altitude. The pier was then drilled and chemical anchors put in place with the Baader flange adaptor then put in position.
The last job of the day was to partly dismantle the wedge and carry it up the (very) narrow spiral staircase that leads into the observatory so it was there ready to be fitted the following day.
It was not possible to use a crane at the time of the installation so an external “transport team” who have previous experience of moving delicate heavy equipment for the department were chosen to carefully move the L-mount and telescope to the roof and into the observatory. The mount and telescope had to be moved from the ground to first floor, then into a narrow room, up a steep and narrow staircase and up through a small access door and onto the roof before being finally installed in the observatory. Measurements of the mount and telescope has been given earlier and it was found that although space was tight, both of the large heavy items should just about fit and be able to be moved onto the roof and into the observatory.
The telescope installation day started early with the arrival of the team setting up a portable gantry lifting system on the roof which would take the weight of the heavy mount and telescope (separately) and enable the items to be raised onto the roof. After discussing how to move and safely lift each item, the L-500 and CDK17 were removed from their crates on the ground floor and the journey to the roof top observatory began. The L-mount was the first to go up and after wrapping it to protect it from damage it was safely hoisted up onto the roof. The CDK17 was next where it also was safely moved onto the rooftop. After less than an hour both the mount and telescope were ready to go into the observatory.
Inside the dome, the Baader levelling flange was put in place and levelled with the wedge being attached next. The transport crew helped with lifting the L-500 onto the wedge where it was then secured. After a well deserved coffee the CDK17 OTA was then clamped onto the L-500 mount ready for the accessories to be attached.
The IMP85 was fitted to the OTA followed by the imaging system, DADOS spectroscopy accessories and then the visual items. The department’s small APO refractor telescope with imaging camera was then mounted on top of the CDK17 and positioned so the telescope was perfectly balanced in DEC. Temporary cable routing was done as the department was going to purchase an industrial mini PC a short time afterwards which would be mounted on the L-mount and also use much shorter length data cables from the various accessories.
The day ended by testing the equipment operation and tuning the mount. Time as also taken to explain further operation of the equipment such as camera operation and how to undertake the mount modelling and polar alignment.
It was great to do this telescope installation in such a nice and friendly campus environment and the whole process went very smoothly. The departmental technicians Ian Murray and Adriana Dias were great to work with and their help and support was greatly appreciated. The "moving crew" were also great to work with and very helpful. Thank you to Adriana too for the use of the timelapse and drone videos too.
Update 19/11/2025: The department obtained an industrial mini PC and shorter length data cables allowing the computer to mounted on the side of the DEC arm with modified cable routing. They have also had a recent clear night which allowed them to undertake mount modelling and get towards a good polar alignment.
Royal Holloway University of London (RHUL) has significantly upgraded its rooftop observatory on the Tolansky Building. Baader Planetarium installed a new PlaneWave CDK17 telescope on an L-500 direct-drive mount along with advanced imaging, photometry and spectroscopy equipment.
Baader Solar Projection Screen (BSPS)
- Safe solar projection on refractors with star diagonals
- Simple observation of the Sun in white light – individually or in groups
- Quick and easy assembly of pre-cut cardboard parts with pre-mounted adhesive strips
- Also suitable for tracking control, e.g., for public outreach. Optimized for viewing from the side
- For operation you will need (not included)
- a lens telescope suitable for solar projection with a star diagonal/prism and at least 3 cm of backfocus. Recommended for focal ratios of ~f/6 or slower
- eyepiece projection adapter with T-2 thread, e.g., the Baader OPFA - Eyepiece Projection adapter (I - VII) (various versions available)
- a glass/metal eyepiece suitable for solar projection with an appropriate focal length to project a solar image at least 6 cm in diameter. The BSPS has been tested with Baader Classic Ortho/Plössl eyepieces.
Baader FFB - Flatfieldbox with 450 / 650 / 850 / 1250mm clear aperture
- PPerfect for astrophotography: Optimize your images with Flats to correct vignetting and dust particles
- Even light distribution: Achieved through a sophisticated design, ideal for filters in the visual spectrum
- Easy operation: Control via a web interface
- Adjustable brightness: Integrated dimmer for optimal adjustment of illumination intensity
- Color tuning and multi-color options: Fine color adjustment possible through WRGB, ensures uniform illumination of color and dual-band cameras
- Flexible mounting options: Can be mounted on a wall, placed on a table, or used in rotating domes
- Available in different sizes: Covers a wide range of telescope apertures, offering versatile applications
- For shipping, the corresponding is also required. It is charged separately and must be ordered together with the FlatFieldBox.
Important note: The Baader FlatFieldBox (FFB) is now available for pre-order. The delivery time is approximately 4–6 weeks. Please make sure to include the appropriate shipping crate with your order.
Baader 2“ BBHS® Prism – Adjustable Star Diagonal
- 2" BBHS prism star diagonal with 2" ClickLock
- Prism made of BaK4 glass with sealed BBHS® coating
- CNC-milled black aluminum housing with adjustable wedge
- Including [product sku="2408156"] with additional grip and security from inadvertent slipping.
- Provides greatest reflectance over most spectral range from 390 to 2000nm
- BBHS = Broadband Hardsilver coating with dielectric protective overcoating
- Much higher in brilliance than cheap dielectric coatings
- Ideal for visual observation and astrophotography with maximum brilliance, even in the infrared spectrum
- Successor to [product sku="2456117"]
Baader 2“ BBHS® Mirror – Adjustable Star Diagonal
- 2" BBHS star diagonal with 2" ClickLock clamp
- CNC-milled black aluminum housing with adjustable wedge
- Including [product sku="2408156"] with additional grip and security from inadvertent slipping.
- Mirror material made of glass-ceramic with 1/10 lambda surface accuracy
- Provides greatest reflectance over large spectral range from 390 to 2000nm
- Much higher in brilliance than standard dielectric coatings
- BBHS = Broadband Hardsilver coating with dielectric protective overcoating
- Ideal for visual observation and astrophotography with maximum brilliance, even in the infrared spectrum
- Successor to [product sku="2456115"]
Coming Soon: Baader OMS-Nano V3 – Remote Switch for 10Micron Mounts
- Remote Switch OMS-Nano (Observation Management System) V3 used to turn your 10Micron mount, equipped with Control Box Version 3, on and off from remote
- With 1m connection cable, 3m long LAN-cable and 2m long USB-cable as well as 12V/100-240V Power Supply
- Incl. web interface and manual
- Successor to [product sku="2455031"]. Since April 2025, all 10Micron mounts have been supplied as standard with the Control Box Version 3. 10Micron has revised the hardware of the electronic control box
Coming Soon: TEC APO 110 f/5.6 Fluorite Apochromat
- Apochromatic precision lens with modern coating
- Oil-spaced and fully encapsulated triplet lens for fastest thermal adaptation and to prevent haze and reflections
- Retractable dew shield
- Lightweight tube
- Free aperture of 110 mm, focal length of 616 mm
- Outstanding image quality and color correction thanks to its central element fluorite crystal
- Residual chromatic aberration between 436 and 1000 nm = 0.02% of the focal length
- Permanently stabilized and oil-spaced - Why oil-spaced lenses?
- 3.5" TEC dual-speed focuser with fine focus on both sides
- Eyepiece clamp with tension ring
Important note: If you are interested, please send us an inquiry including your contact details by email. We accept pre-orders.
Product Highlights from Baader Planetarium for October 2025: Baader Solar Projection Screen (BSPS) for safe solar projection on refractors with star diagonals, Baader FFB-Flatfieldbox – No more Sky-Flats in the (Remote) Observatory and more.
The [product sku="2420400" style="imgright"] enables safe solar observation, particularly suitable for small groups. All you need is
- a lens telescope suitable for solar projection with star diagonals/prisms and at least 3 cm of backfocus. Recommended for focal ratios of ~f/6 or slower
- an eyepiece projection adapter with T-2 connection, e.g. the Baader [product sku="opfa"]
- an eyepiece suitable for solar projection, made of glass/metal, with a matching focal length to project a solar image of at least 6 cm in size. The BSPS has been tested with Baader Classic Ortho/Plössl eyepieces.
To give you the best possible information about this product, we have compiled some questions and answers on this page. Please also read the assembly and user manual and visit our website. If you have further questions, use the comment function or contact us.
Compatibility & Optics
Can I use the BSPS with other eyepieces?
Yes – provided that the eyepiece is suitable for solar projection. With unsuitable eyepieces, the cement between the lenses may deteriorate. In particular, older eyepieces sometimes use heat-sensitive Canada balsam.
Furthermore, an eyepiece with a plastic housing can suffer damage if the Sun drifts out of the field. Burn marks on the housing appear quickly as soon as the Sun moves out of the center.
Our Classic Ortho eyepieces have been tested for up to five continuous hours. Even with inadequate tracking, only the anodizing faded; the eyepiece itself was not damaged. We cannot provide information on eyepieces from other manufacturers.
Can I use the BSPS with a Newtonian?
With suitable Newtonian telescopes, solar projection is generally possible. However, note: The secondary mirror (even more so with Schmidt-Cassegrains) lies close to the focal plane and receives a lot of heat. This can damage its mirror cell or soften adhesives – even if the mirror itself remains unharmed. We have seen Schmidt-Cassegrains where the housing/baffle of the secondary mirror had melted.
Please check the manual of your telescope or consult the manufacturer to see whether it is explicitly approved for solar projection. If necessary, stop down the telescope – many older telescopes have a small aperture integrated in the dust cap for this purpose.
Can I use the BSPS with other eyepiece projection adapters?
Yes – but you must adjust the distance so that the solar image is at least 6 cm in size. For this, you can use our T-2 extension tubes, for example.
Warning: With too many extension tubes, the image becomes very large; the T-2 thread will then vignette and the image will be cut off.
My telescope has a plastic focuser – can I still use the BSPS?
Basically yes. The same notes apply as for the use of a Herschel prism. We recommend telescopes and accessories made of metal, since we do not know which plastics are used and how heat/UV-resistant they are. We cannot give any further guarantees beyond those of the device manufacturer.
Our tests with 70/400 (f/5.7) and 90/500 (f/5.5) telescopes showed no significant heat load inside the tube. At the end of the tube before the focuser, the temperature was only about 5 °C above ambient (33 °C instead of 28 °C) – no danger for focuser, telescope, or baffles, especially as long as the Sun is visible on the screen. Cover the objective when not observing.
The situation is different at the star diagonal: here, the light cone is smaller and the energy density higher. Use a full-size diagonal/prism that utilizes the full aperture without additional baffles. Too-small mirrors (often in inexpensive prisms) can suffer damage at the housing from the solar energy (fading, deformation, embrittlement).
Can I use Amici prisms?
No – Amici prisms have a more complex beam path and are not suitable for solar projection.
Can I use spotting scopes?
No – spotting scopes usually cannot reach focus with an eyepiece projection adapter; in addition, they have complex internal focusing and too many components near the focal plane which would be damaged by the heat. They are not suitable for solar projection.
Operation & Handling
Is the BSPS difficult to assemble?
No. Besides the projection screen and the T-2 connection thread, the BSPS consists of three cardboard parts that are pre-cut and pre-folded; the adhesive strips are already attached.
- Detach the parts from the cardboard sheet.
- Fold along the creases.
- Assemble according to the assembly instructions, insert the screen and thread, and press down the adhesive strips.
No additional tools or cutting are needed. A ruler makes folding along the creases easier; a pencil or similar helps to press down the adhesive spots.
I cannot reach focus – what can I do?
Some inexpensive telescopes with 1¼" focusers do not provide enough backfocus for eyepiece projection. In this case, screw the OPFA directly to our star diagonal #2456005 / #2456005K.
Can I use eyepieces with shorter focal length than recommended?
Yes – but the image will be larger and you will only see part of the solar disk.
Can I use eyepieces with longer focal length than recommended?
In principle yes – the image will be smaller. If it becomes smaller than 6 cm, increase the distance with additional extension tubes. Note: Excessive distance will again lead to vignetting by the tubes; the image will then be cut off.
The image is uncomfortably bright – what can I do?
The screen is intended to be viewed from the side. When viewed directly from above, the image appears very bright – but not harmful. Stop down the telescope if necessary; even with a smaller aperture the image remains bright enough, and the heat load on the star diagonal is reduced.
Do I need a tracking mount?
Not necessarily, but a stable mount with tracking makes observation much more comfortable. Especially with the Sun nearly filling the field of view, it will drift out of the image quickly without tracking.
Observation & Quality
Is the BSPS really safe?
Yes. When used correctly and with an image size of at least 6 cm, the screen hardly warms up. The brightness is harmless due to the natural observation distance.
Can I observe prominences with the BSPS?
No. The BSPS allows observation in white light. For H-alpha structures such as prominences, you need a dedicated H-alpha filter system.
Can I also show the Moon with the BSPS?
No. The back projection reduces image brightness so strongly that the Sun remains well visible, but the Moon (even full Moon) appears too dark.
Why do I not see sunspots although the image is sharp?
Solar activity varies in a cycle of about 11 years. During solar minimum, there may be no or only very small sunspots for several days (last maximum around 2024/25).
Can I trace the image?
No – due to the back projection the brightness is already significantly reduced. An additional sheet of drawing paper on the screen dims it too much.
Is the image as sharp as with classic projection?
No. Due to the back projection the image is somewhat softer, but the umbra and penumbra of large sunspots remain visible. For maximum sharpness, a Herschel prism with Solar Continuum filter is ideal, followed by objective filters made of AstroSolar film – however, both are not suitable for group observations at the telescope.
Application Examples
The Baader Solar Projection Screen (BSPS) enables safe solar observation, particularly suitable for small groups. To give you the best possible information about this product, we have compiled some questions and answers on this page.
Factory Setup and Benefits
All 2“ BBHS Prism and Mirrors are mounted with high-quality optical glue – free of strain – on individual support structures within an enclosed housing. This method of supporting the optical components allows the optics to be adjustable within the optical light path. With the new 3-point adjustment system, every 2" BBHS® Mirror and Prism's optical and mechanical axis is perfectly aligned in our factory.
This offers three main advantages in addition to the unmatched performance of the BBHS Star Diagonals:
- Uncompromising optical adjustment for highest demands of optical precision.
- Flexibility for users whose systems present issues that normal diagonals cannot resolve
- Ability to build fully adjustable systems for users who, for example, want to build a Bino Telescope System
Alignment and Modification
The 3-point alignment is set in our factory so that the image shows no noticeable rotation around its center when the diagonal is turned 180° in a properly aligned eyepiece clamp. Optical and mechanical axes are matched perfectly on our optical benches.
If you decide to change this setting due to issues in your setup, you are free to do so. Keep in mind, once changed, you will lose the warranty on the alignment of the BBHS® Star Diagonal. The rest of the warranty remains valid.
Adjustment Procedure
Before you try to adjust the diagonal, make sure that any rotation issue is not caused by tilt in the focuser.
To change the alignment, use only the three set screws (1, 2, 3) arranged around the center screw (4). These M3 screws allow careful adjustment, regardless of mirror or prism. The center screw holds the prism and ensures the reflective surface sits exactly in the mechanical axis. Do not alter this screw.
Adjustment is done using a push-and-pull method: loosen one screw and tighten the other two, or vice versa, until the star stays centered when you rotate the diagonal. Once the position is correct, tighten all three screws evenly to avoid losing alignment.
Fastening these small screws must be done gently without the use of force. A proper hex wrench should only need two fingers for tightening. With an Allen key, insert the long side into the screw and use only the long side – never the short side – for tightening to avoid applying too much force.
The new adjustable 2″ BBHS Mirrors and Prisms feature an innovative 3-point adjustment system that ensures perfect factory alignment of optical and mechanical axes. The strain-free adhesive mounting guarantees maximum precision – ideal for demanding observers and projects such as bino telescope systems. If necessary, the alignment can be fine-tuned by the user.
As an astrophotographer in Hamburg, one faces a particular challenge: increasing light pollution makes observation and astrophotography significantly more difficult. Deep exposures or faint objects can hardly be meaningfully captured under these conditions. Additionally, trees obstruct a clear view of the sky.
This led early on to the idea of moving activities to a remote location. There, under significantly better sky conditions, we can pursue all photographic disciplines of astrophotography with a completely different level of quality.
Requirements for a reliable mount
For such a site, you need a mount that operates reliably without constant manual control: precise pointing, highly accurate tracking, absolute reliability in continuous operation, and flexible remote control. After careful consideration, the choice fell on the new 10Micron GM1000 HPS EP (Enhanced Performance) – a mount that ideally meets all these requirements while remaining compact and capable.
I was already very familiar with the predecessor, the 10Micron GM1000 V2, and impressed with its quality in every respect. The interesting aspect of the new version is the higher payload, the reinforced mechanical components that come with it, and the new electronics that promised a more powerful experience. The stand-alone hand pad with backlight and heater is irrelevant for remote use, but Ethernet, Wi-Fi, and RS-232 interfaces are – and the mount comes with them out of the box.
The higher payload was important to me since it was not yet 100% clear what exactly would be operated remotely, i.e., which equipment would be installed there. A higher payload promised greater flexibility in configuring the setup.
First impressions and setup
The mount was delivered in a sturdy box, everything included except the counterweights. Mounting it on my pier took only moments, as the dimensions and drillings matched the predecessor exactly. I eagerly awaited the first use. Finally in early September we had some clear skies.
A first and crucial step is the precise balancing of the equipment, consisting of a Celestron 11" EdgeHD, a [product sku="2300095"], and the full-frame camera [product sku="1941102"]. With the original dew shield and the motorized Steeltrack, the total weight was around 31 kg – slightly above the specified maximum payload.
Balancing is supported by a hand controller function under the menu item Drive → Balance → Balance RA / Balance Dec, which theoretically should also make field use quick and straightforward.
In the past, I performed polar alignment with a finder and SharpCap4.0’s polar alignment function, but now the NINA plugin is intended to take over precise alignment. The advantage is obvious: alignment is done with the actual target setup, without switching software or devices.
Pointing model and everyday use
To use the 10Micron GM1000, the next configuration step is creating a pointing model. The pointing model can be generated excellently within N.I.N.A., and once created, it can be reused for all following nights.
My limited sky view is heavily restricted by trees and neighboring houses, so I loaded my horizon into NINA. These limits are taken into account when generating the pointing model, meaning the mount will not slew to stars in obstructed areas. My pointing model covers only 20 stars due to the limited field of view. Rule of thumb: the more stars, the better the tracking accuracy, especially at long focal lengths.
The subsequent workflow is routine, with control handled entirely via the Advanced Sequencer. Connect and start devices, slew to targets, choose framing, set imaging parameters, start sequence.
Conclusion – a targeted further development
The 10Micron engineers and product developers have succeeded with the new GM1000 EP in creating a great product, a targeted further development that once again improves on an already high level. The significantly higher payload of up to 30 kg at nearly the same weight lifts the mount into a higher performance class that could likely even carry a C14 with astrophotographic accessories. The new V3 control box, like the V2 version, is robust, software-wise on the highest level, functional, and ideally suited for all facets of astrophotography.
The mount is easy to handle and delivers excellent results under maximum load, as demonstrated by the M57 image, captured under my Hamburg sky in a small gap between houses and trees.
September 2025, © Peter Bresseler – pixlimit.com
Experience report by Peter Bresseler: Astrophotography with the new 10Micron GM1000 HPS EP – higher payload, new electronics, and impressive results even under challenging conditions in Hamburg.
Factory Acceptance Test (FAT) with Bundeswehr, steep and sciencentric
On September 23/24, 2025, the Factory Acceptance Test (FAT) of the two 1-m telescopes for the Bundeswehr Space Surveillance Project took place at Baader Planetarium. Representatives of the Bundeswehr (German Armed Forces) as well as our partners steep GmbH (general contractor) and our partner sciencentric AG accompanied the tests in our production and integration facilities in Mammendorf.
The purpose was to verify whether the compatibility of the equipment and the software in factory-ready condition met the customer’s requirements. All checkpoints were successfully passed, and both instruments fully convinced. There were no hardware complaints whatsoever. Only the sky test will be postponed to the SAT (Site Acceptance Test), as unfortunately the weather did not permit any observations during the week.
A brief look back
In early July 2025, we installed two 6.15 m Baader slit domes (Advanced) at the Meßstetten military training area; at the end of July, construction progress was celebrated with all project partners at the topping-out ceremony. With today’s Factory Acceptance Test, the two telescopes – a PW1000 Nasmyth Astrograph f/6 and a PF1000 Folded Prime Focus f/2.25 from PlaneWave Instruments – are now also prepared for delivery.
Next steps
Following the FAT, the dismantling of the instruments, transport, installation and integration of the telescopes in Meßstetten will take place. This will be followed by calibration, full robotic integration via Webservatory as well as system tests with the Space Situational Awareness Center in Uedem. Trial operation is scheduled to start in January 2026; the official handover to the Bundeswehr is still planned for May 2026.
We thank all parties involved for the constructive cooperation and look forward to the next project stage – the commissioning of the overall system on site.
On September 23–24, Baader Planetarium hosted the Factory Acceptance Test of two 1-m telescopes for the Bundeswehr Space Surveillance project. Both systems successfully passed the FAT.
In October 2024 we reported on the Bundeswehr contract under which Baader Planetarium will deliver two 6.15-meter slit domes complete with one-meter telescopes as a turnkey solution for the new Optical Space Surveillance System.
Two 6.15m slit domes each with a 1m telescope for Bundeswehr space surveillance project - Baader Planetarium supplies two 6.15-meter slit domes and 1-meter telescopes for the German Armed Forces' space surveillance project. PlaneWave Instruments' precision telescopes and Teledyne's advanced CMOS cameras enable monitoring of objects in low Earth and geostationary orbits. » Read the full reportToday we are delighted to share the latest milestone: both domes were installed on schedule in early July—under (still) brilliant sunshine.
Topping-out ceremony on July 30th, 2025
On 30 July, representatives of the Bundeswehr, steep GmbH (main contractor), Rosenberger GmbH (construction company) and members of our Baader team celebrated the topping-out ceremony at the Meßstetten military training area. The two towers erected for the space surveillance system were formally inaugurated and handed over to the end-user with best wishes. The facility was presented to numerous guests from the Bundeswehr, industry and the media. Südwestrundfunk (SWR) covered the ceremony and the future significance of the installation for Germany’s security architecture:
👉 SWR report (german)
Beneath the freshly raised wreath on the five-metre tower next to the 6.15 m slit dome, Lieutenant Colonel Stephan Huland emphasised the importance of this first visible step towards a national space-situational-awareness network. For us, the event was also the right moment to acknowledge the smooth installation of the two domes: from unloading the large, heavy dome segments to the first opening and closing of the slit, everything went exactly according to plan. Installing two domes of this size with a large assembly team in just one working week is the result of precise pre-fabrication in Mammendorf and close coordination with the customer and Rosenberger on site.
Looking ahead
Towards the end of the year, the two one-meter reflector telescopes for acquisition and tracking will be installed inside the domes. Calibration, software integration via Webservatory by our software partner sciencentric AG, and trial operations will follow from January 2026. Final hand-over to the Bundeswehr is scheduled for May 2026.
Baader Planetarium would like to thank all partners for their seamless cooperation. We look forward to writing a new chapter of German space history on the ground together—and will keep you informed here about the next steps.
Impressions of the dome installation
Topping-out milestone: Baader Planetarium has installed two 6.15 m slit domes for the Bundeswehr’s new Optical Space Surveillance System on schedule. Final hand-over and operations set for 2026.
For years, the 10Micron name has been synonymous with uncompromising precision, reliability, and innovation in the world of astronomical mounts. 10Microns reputation is built on a legacy of engineering excellence and a continuous dialogue with the world's most demanding astrophotography community.
- The GM1000 HPS mount has been, and remains, a benchmark in its segment: a perfect balance of payload capacity, portability, and the legendary pointing and tracking accuracy guaranteed by our HPS technology.
- The AZ1000 HPS mount has established itself as the go-to solution for maximum versatility: a fast, reactive, and precise altazimuthal platform, chosen by universities, observatories, and advanced amateur astronomers for applications ranging from Free-space optical (FSO) to astronomical visual use.
We are not introducing tow successors, but an evolution. The GM1000 HPS EP and AZ1000 HPS EP (Enhanced Performance) is the result of a philosophy of continuous innovation. Through market feedback and investment in new processes and materials, 10Micron has now raised the standard once again, creating a mount that pushes the boundaries of what is possible with a setup of this size.
Every improvement must translate into a tangible, measurable benefit for the user.
10Micron GM1000 HPS EP (Enhanced Performance)
The Evolution of Precision. Redefined.
To fully appreciate the value of the GM1000 HPS EP, it is essential to recognize the foundation upon which it is built.
The GM1000 HPS is universally recognized for:
- Absolute Precision: Thanks to high-precision absolute encoders on both axes, it delivers flawless pointing and tracking, eliminating the need for autoguiding in most applications.
- Exceptional Payload-to-Weight Ratio: Optimal payload capacity in a lightweight and easily transportable mount body.
- Robustness and Reliability: Built to last and perform night after night, under any conditions.
- Advanced Software: A powerful and intuitive control system that offers professional-grade features to all users.
- Remote Operation Capabilities & Global Support: Engineered for reliable remote applications, supported by a comprehensive global sales and technical support network.
Years of field-testing by users worldwide, who often pushed the mount near its limits with excellent results, provided 10Micron with invaluable data and the confidence to take the next step.
The main features of the GM1000 HPS EP include:
The GM1000 HPS EP (Enhanced Performance) carries the success story of the GM1000 HPS into the next generation. It is not a replacement but an evolution of the original GM1000 HPS. Through targeted mechanical reinforcements – including reinforced RA- and DEC axis and upgraded bearings – it offers 20 % more payload capacity (30 kg / 66 lbs) while maintaining virtually the same overall weight. This makes it the first choice for astrophotographers who demand maximum stability in a compact mount class.
| Key Technical Innovation | End-User Benefit |
|---|---|
| Increased Payload Capacity to 30 kg | Get 20% more payload capacity (30 kg / 66 lbs) in the same renowned, portable form factor as the GM1000 HPS. More potential for your instruments, with no compromise on transportability at the same price |
| Reinforced Axis | Both RA ans DEC axes have been improved with a new design and an increased thickness. The RA diameter has also been increased in diameter. This results in anexponential increase in structural rigidity, drastically reducing vibrations and flexure. |
| New, Larger and Reinforced Bearings | As a direct result of the new axis, the larger bearings ensure smoother movements, optimal management of the increased load, and superior longevity of the mechanical system. |
| Redesigned Worm Gear Supports | The new mechanical housings have been optimized to integrate more robust and high-performance worm gear supports. This minimizes any potential flexure in the drive system, a critical factor for an excellent tracking. |
| Enhanced Build Quality and Manufacturing Precision | The use of new CNC machinery and 3D coordinate measuring machines (CMM) allows tighter mechanical tolerances and consistent quality for every unit. |
| New V3 Control Box | Hardware and Software improvements, leveraging modernized electronics and EU-made industrial-grade connectors for superior performance and robust, long-lasting connections. |
| Selective Sourcing of Materials | Stricter material and component selection ensures top-tier performance and dependability. |
| Enhanced Connectivity & Web Interface | Unique connectivity options, including a sophisticated web interface, enables comprehensive monitoring and precise adjustments without direct physical interaction. |
| Optimized for Remote Operation | The inherent reliability and robust design of the GM1000 HPS EP, combined with its advanced connectivity features, enable seamless and dependable remote operation. |
| Global Support Network | A worldwide sales network ensures consistent service and technical support, offering peace of mind to users globally. |
NEW: GM1000 HPS EP - The Evolution
The GM1000 HPS EP (Enhanced Performance) is the next evolutionary stage of the proven GM1000 HPS - not a replacement, but a targeted further development.
The GM1000 HPS EP is now available at the same price, including the likewise new V3 control box.
10Micron AZ1000 HPS EP
Versatility and Power, Elevated.
To effectively communicate the step forward with the EP version, it's essential to start with the strengths of the original model. The AZ1000 HPS is renowned for:
- Extreme Versatility: Designed to excel in a wide range of applications, from Astronomy to Weather and Atmospheric Sciences, Free Space Optical Communication, Space Situational Awareness (SSA), LASERCOM and Satellite Tracking. A "Silver" version is also available and suitable for Solar observations.
- Speed and Precision: Capable of pointing speeds up to 15°/sec with positioning accuracy guaranteed by HPS technology with absolute encoders.
- Exceptional Payload-to-Weight Ratio: Optimal payload capacity in a lightweight and easily transportable mount body.
- Robustness and Reliability: Built to last and perform night after night, under any conditions.
- Advanced Software: A powerful and intuitive control system that offers professional-grade features to all users.
- Remote Operation Capabilities & Global Support: Engineered for reliable remote applications, supported by a comprehensive global sales and technical support network.
The AZ1000 HPS was an exceptional platform that, thanks to new technologies developed at 10Micron, could be further enhanced.
Based on the same “enhanced performance” philosophy as the new GM1000 HPS EP, 10Micron has also further developed the AZ1000 HPS. The result is the AZ1000 HPS EP mount: An even more stable, very robust Alt-Az mount for astronomical and atmospheric research, satellite tracking, SSA, Free Space Optical Communication, demanding visual astronomy.
With the AZ1000 HPS EP, you are investing in the latest evolution of 10Micron technology - with optimized mechanics and electronics for future requirements.
A “Silver version” is also available especially for solar observation.
The GM1000 HPS EP and AZ1000 HPS EP (Enhanced Performance) is the result of a philosophy of continuous innovation. Through market feedback and investment in new processes and materials, 10Micron has now raised the standard once again, creating a mount that pushes the boundaries of what is possible with a setup of this size.