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Filters
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(Ultra-) Narrowband / Highspeed
CMOS-optimierte H-alpha, O III, S II Schmalband-Filter in vier Filterkategorien
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L-RGB CMOS Filters
for CMOS / CCD Astro-Imaging
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Visual & Photographic
Visual Nebula Filters as well as One-Shot LPR contrast enhancement filters
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Color / Planetary Filters
increase contrast at Moon&Planets, including U-Venus / Methane 889nm / CaK K-Line
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Polarizer & Neutral Density
conveniently observe overly bright objects / Moon
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Photometric-Filters
UBVRI (Bessel-konform), SLOAN/SDSS (ugriz´)
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Accessories (UFC, Holder, Boxes)
Auxilary equipment for filter usage and storage
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DSLR H-alpha Conversion Filters
H-alpha Astro-Conversion Filter and Service for Canon DSLR-cameras

Baader Narrowband/Highspeed Filter Selector
To make it easy for you in the future to decide which kind of Highspeed (or Narrowband) filter you need for your telescope, please check the new filter selector tool that provides you the correct individual graph based on your entries.
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H-alpha Bandpass-Filter (20nm) - CMOS optimised - a new approach for urban RGB astrophotographyOn the run from LED lamps and ever-increasing light pollution, I have tried to answer the following questions. What happens if: the new 20 nm H-alpha bandpass filter is used instead of a normal 100 nm R-filter and. the new 9 nm O-III Super-G filter is used instead of the normal 100 nm G filter? With the choice of the reflection nebula The Angel Nebula (NGC 2171) I have set the bar very high for the first test image. There are outstanding images of this object, e.g. from ChileScope, Lijiang Gemini Observatory or Namibia. At my location (Bortle scale 5), however, this faint nebula is a real challenge. The result here is a "20 nm H-alpha / 9 nm Super-G / 100 nm B" image. The new UHC-L / Ultra-L booster filter was used as luminance: https://www.baader-planetarium.com/de/uhc-l-ultra-l-booster-filter.html The Angel Nebula (NGC 2170) - a new approach to urban RGB astrophotography: https://www.astrobin.com/jbza9k/ On the other hand, the new filters - 20 nm H-alpha bandpass filter and the 9 nm O-III Super-G filter - can be used as full line filters, as seen here: Jellyfish Nebula (IC443 & IC 444) - testing new filters: https://www.astrobin.com/j7t24c/ The EBV of this bicolour image was done according to the workflow of Marcel Drechsler: https://www.youtube.com/watch?v=5a-OuhdEskg&t=2sA.BRINGMANN
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UHC-L / Ultra-L booster filter 2'' opens up new fields of activityI have chosen The Angel Nebula (NGC 2171) as a test object for the new Baader UHC-L / Ultra-L booster filter filter. This faint reflection nebula has filled me with desire and respect for years, as all my previous attempts at this object have practically failed. The normal wide open LRGB filters do not provide sufficient contrast at my location (Bortle 5). Only this wonderful UHC-L filter changed the game from the ground up. Admittedly, the night was moonless, but the visibility was not as good as in the high mountains or Namibia. Nevertheless, the result is amazing for me and awakens in me (an inveterate narrow-band photographer) an undreamt-of desire for new fields of activity, unbelievable! How to colour this luminance can be seen here: https://www.astrobin.com/jbza9k/A.BRINGMANN
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I love it!I use this on my full spectrum converted DSLR for UV photos. I have not seen anything else that even comes close. Buy once cry once, just get it.frr
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O-III Super-G filter (9nm) - CMOS optimised - a new approach for urban RGB astrophotographyOn the run from LED lamps and ever-increasing light pollution, I have tried to answer the following questions. What happens if: the new 20 nm H-alpha bandpass filter is used instead of a normal 100 nm R-filter and. the new 9 nm O-III Super-G filter is used instead of the normal 100 nm G filter? With the choice of the reflection nebula The Angel Nebula (NGC 2171) I have set the bar very high for the first test image. There are outstanding images of this object, e.g. from ChileScope, Lijiang Gemini Observatory or Namibia. At my location (Bortle scale 5), however, this faint nebula is a real challenge. The result here is a "20 nm H-alpha / 9 nm Super-G / 100 nm B" image. The new UHC-L / Ultra-L booster filter was used as luminance: https://www.baader-planetarium.com/de/uhc-l-ultra-l-booster-filter.html The Angel Nebula (NGC 2170) - a new approach to urban RGB astrophotography: https://www.astrobin.com/jbza9k/ On the other hand, the new filters - 20 nm H-alpha bandpass filter and the 9 nm O-III Super-G filter - can be used as full line filters, as seen here: Jellyfish Nebula (IC443 & IC 444) - testing new filters: https://www.astrobin.com/j7t24c/ The EBV of this bicolour image was done according to the workflow of Marcel Drechsler: https://www.youtube.com/watch?v=5a-OuhdEskg&t=2sA.BRINGMANN
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Der UHC-L / Ultra-L-Booster Filter ist topAlnitak, 15x60s; Bin 2, aufgenommen mit den PlaneWave Delta Rho 350, f/3 Der neue UHC-L / Ultra-L-Booster Filter ist top; Nach dem Stacking und Aufdrehen der Daten ist nichts zu bemängeln! Kein Halo, kein Reflex; er ist genauso gut wie die neuen CMOS-optimierten RGB Filter.Christoph Kaltseis
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Von dem Nachfolger des Baader 35nm H-alpha Filter bin ich vollauf begeistert.Diese Aufnahme ist am 07.FEB (Mondphase 97%) und am 09.FEB (Mondphase 88%) am Rande einer Großstadt entstanden. An dieser Stelle möchte ich zeigen, dass man mit diesem schönen Filter sogar unter recht ungünstigen Bedingungen und auch @ f/1.9 erfolgreich Deepsky-Astrofotografie betreiben kann. Für diesen Test habe ich mich für scheinbare Standard Deepsky-Objekte entschieden. Auf den zweiten Blick sieht man jedoch die Handicaps. Es ist ein zwei Panel Mosaik, das absolut gradientfrei und exakt zusammengesetzt ist. Man sieht auch das Orion Trapezium und der Dynamikumfang vom Zentrum des Orion-Nebels bis hin in die äußeren Partien entspricht bei der EBV gefühlt der „Ewigkeit“. In dieser Aufnahme steckt, würde ich sagen, recht viel Herzblut drin. Bitte nehmen Sie sich einen Moment Zeit und beurteilen Sie bei voller Auflösung ( https://www.astrobin.com/full/rczzva/0/) die Sterne kritisch bis hin in die Ecken. Die Sterne sind hier nicht weiter prozessiert. In diesem Bild gibt es viele helle Sterne und es gibt nicht ansatzweise ein Halo. Selbst am mag 1.9 hellen Alnitak ist alles perfekt. Etwaige Spikes kommen wohl vom Anschlusskabel der Kamera, die sich beim C11-Hyperstar naturgemäß im Strahlengang befindet. Auch über die Sternwarte und die 10micron GM3000 HPS sollte man an diese Stelle ein Wort verlieren. Diese Aufnahme ist gänzlich ohne Guiding entstanden und die Belichtungszeit pro Sub betrug 600s. Die Präzision von diesem Setup ist einfach sagenhaft!A. Bringmann
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Universal Flter ChangerObwohl es diverse Filterschubladen auf dem Markt gibt und ich auch schon eine besitze, habe ich für meine neue Kamera nicht lange überlegt und den UFC mit passenden Adaptern bestellt. Ich wollte eine Lösung, die an zwei Teleskopen eingesetzt werden kann und mechanisch keine Zweifel aufkommen lässt. Bereits beim Auspacken fühlen sich die Teile solide an. Am Teleskop bestätigt sich der Eindruck. Gut bedienbar und nichts wackelt. Die Gewinde scheinen sauber verarbeitet zu sein und die S72 Ringschwalbe sitzt aufgrund der 8 Klemmschrauben bereits bei einem geringen Anzugsmoment gut fest. Der Filter - bei mir ein UHC-S und ein Klarglasfilter - sitzt reproduzierbar an seinem Platz. Rundum der richtige Kauf. Ich möchte den UFC bereits jetzt nicht mehr missen. Das Foto zeigt den UFC mit einem Selbstbau-OAG mit M48 Anschluss.Kai
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The filter set everyone with an f3 system should ownBefore Baader released these filters, astrophotographers who shot with f/3 systems had a predicament. The f/3 focal ratio is fast enough to blue-shift the incoming light to such a degree that you would lose a lot of signal as the emission band is no longer centred on the band pass. At the same time, f/3 is not so fast that you could use filters specifically pre-shifted for f/2 systems such as Rasa or HyperStar without running into the same issue on the other side of the band pass. So you basically had three choices. The first option was to shoot with 7nm filters as they have a wide enough band-pass to accommodate for the blue-shift. This is not an ideal solution as the whole point of owning a fast system is to maximise your signal-to-noise ratio and reduce integration time (ignoring aperture size as the majority of astrophotographers are limited by seeing and guiding rather than by diffraction). Why bother paying for a fast system and struggling with collimation and tilt if you could get a similar SNR shooting with 3nm filters on a slower system? The second option would be to try your luck with 5nm or 3nm filters anyway. This would usually result in an even worse SNR than shooting with 7nm filters due to the blue-shift. The last option is to order custom made filters from Chroma which are specifically pre-shifted for f/3 systems. This is what you’d probably do if you were shooting with a PlaneWave Delta Rho or Officina Stellare Veloce but I didn’t even bother enquiring with Chroma how much this would cost as I’d probably have to sell my car to pay for them. By coming out with these f/3 filters, Baader have done a great service for the astrophotography community by enabling people who own f/3 systems to finally get the most out of their setup. I own a Sky-Watcher Quattro 200P with a Starizona Nexus and as soon as I found out these filters existed I knew I had to have them. When it comes to performance, they blow my 7nm ZWO filters out of the water. I’ve never owned Chroma or Astrodon filters but I struggle to see how they could perform too much better than these Baaders. Halos are very minimal for my particular setup. Although I did observe halos when shooting Sirius, I saw no halos at all on a 10-minute sub-exposure of Alnitak. Below I’ve attached two 3-minute sub-exposures (cropped) of NGC 3576 shot in Bortle 5 skies during similar moon phases. One was taken with a ZWO 7nm HA filter and the other was taken with the Baader 3.5nm HA filter. I don’t think I need to specify which is which. The difference is night-and-day. The Baader has significantly more contrast and detail in the nebulosity thanks to the narrower band pass letting in half of the light pollution. Even the stars appear tighter with the Baader filter although I admit my collimation was slightly off for exposure taken with the ZWO filter. These filters are definitely a must-have for anyone shooting with an f/3 system.Andy
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100mm x 100mm sloan Z'S filter- a must have for NIR fun!I 3d printed a filter cell and labeled it with the appropriate filter identifier on the face of the plastic. The glass is measured precisely at 100mm x 100mm so 3d modeling this was a breeze. The filter is very nice to look at, with its holographic reflections between the alternated interference coatings. When pointed at the sun, it appears pure white/golden and because of this i must use a secondary filter at the focuser to prevent color bleed.Apollo
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Beautifully engineered filters to use inThe long story short goes like this: we needed an UV cut filter with a cut-off wavelength in range of 400-420nm. The issue was we needed the filter at an "impossible" size, of precisely 5.6mm diameter. Luckily for us, the 39mm diameter, 0.55mm thick UV/IR cut filter from Baader was thin enough so we could cut it ourselves to measure. Although we do not encourage anybody to cut /shape the filters themselves (it's tedious, highly time-consuming process) the end result was a precise 5.6mm UV cut filter that we could finally mount in our UV fluorescence photography setup. The filter itself performs flawlessly to its purpose but that is quite expected when it comes to Baader filters, right? The results: Attached is an animated GIF. The first shot of a 1000x150 mm rock sample is taken in visible light, the second one in UV light with Baader UV/IR Cut Filter. On the sample there are 3 veins saturated with crude oil. In visible light, those crude oil veins appears dark brown (surrounded by the light grey rock background). In UV fluorescence, the crude oil appears yellowish - brown (while the rest of the rock sample appears deep blue), that is the classic oil UV fluorescence signature. The scans are not actually a single picture, but they were obtained by stitching together slices representing about 5mm of sample (about 200 pictures stitched together to cover the entire 1m length of the sample - our setup does this automatically, virtually in real-time). The third frame of the GIF is a detail picture (mostly purple) that shows how that UV picture would look like WITHOUT Baader UV cut filter. As we can see, the faint fluorescence light we’ve seen in the UV scan is overpowered by the reflected 365nm UV excitation light so a UV cut filter to eliminate the reflected excitation light is critical. Thank you, Baader Planetarium for bringing quality products to the market! P.S.: Attached is also a detail snapshot of the camera setup. The actual camera is the one surrounded by 4 LED (those 4 LEDs are for taking pictures in visible light) while next to the camera there is a black disk made out of ZWB2 (365nm filter) that covers the UV light source (a Nichia 365nm high power UV LED). The overall setup details are available here: https://www.roscientific.com/miniperm.htmlSandrino Marinescu
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Toller filterErfahrung visuelle Nutzung an meinem 12 zoll dobson. Ich habe schon mehrere " planetenfilter" getestet und war bislang nicht besonders zufrieden mit der abbildungsleistung und der verarbeitung! Was kann ich aber über den Baader planeten filter sagen. Absolut genial! endlich sauber geschnittene gewinde! Kein verkanten mehr beim einschrauben oder überdrehen beim festziehen ! Saubere verarbeitung ! So soll das sein. etwas das mechanisch gut funktioniert macht spaß! Und nun visuell Genial! Egal ob ich mono oder im bino betrieb beobachte.scharfe abbildung bei sehr gute kontraststeigerung ohne das bild wie im farbfilter einzufärben!! Der gewinn ist toll . Es ist ein leichtes mit ihm deutlich mehr details zu erkennen. Z.b. der grf auf jupiter oder strukturierung mit den polkappen auf mars zu sehen wird mit ihm zur leichtigkeit. Ab und an noch einen graufilter dazu wenn es zu hell ist. Ich bin voll zufrieden sodass ich alle meine filter von baader geholt habe.J.P.
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Tricky to install but worth itI replaced this filter myself. it was my first time ever taking apart a camera. There are some really good guides online (Canon) and if you take your time and follow those I think anyone can do it. The filter itself is great. Attached is a comparison image using the same equipment, location, exposure times and similar processing (different nights though and possibly different sky conditions)Derek
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super FilterDer 3,5nm-Ha-Filter ist sehr gut geeignet, um Deep-Sky-Objekte aus der Stadt heraus zu fotografieren. Auf den Fotos ist der Orionnebel zu sehen. Beim ersten Bild handelt es sich um ein Stack aus 36 x 300 s. Die Aufnahmesession erfolgte unter Bortle 7 kurz vor Neumond, bei eher schlechtem Seeing. Das Foto ist gestreckt und mit PixInsights HDRMultiscaleTransform mit 9 Layern bearbeitet. Weitere Anpassungen gibt es nicht. Ich denke, so sieht man besser, was der Filter kann, als wenn ich das Foto voll überarbeitet hochgeladen hätte. ((Spiegel-)Eiersterne und Bildrauschen hin oder her.) Das zweite Foto ist eine Einzelaufnahme aus der Session, ebenfalls gestreckt. Bisher habe ich immer nur gefasste Filter verwendet. Insofern war es ein wenig aufregend, den ungefassten ins Filterrad einzusetzen. Das hat dann zwar gut geklappt, aber die teleskopseitige Markierung ist weniger leicht zu erkennen, als es die Produktfotos glauben lassen. Ich musste ein paar Mal hin und her drehen, um sicher zu gehen. Mir gefällt der Filter nach dem ersten Einsatz sehr gut. Hoffentlich spielt auch mal das Wetter mit, um mehr mit ihm arbeiten zu können.j Astro
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Macht Lust auf mehr…Ich habe den Filter jetzt etwa zwei Wochen und konnte ihn während der Sonnenfinsternis testen - ich bin begeistert. Die Bildqualität der Rohdaten ist deutlich kontrastreicher, was sich dann auch im fertigen Bild zeigt. Ich freue mich auf die kommenden klaren Wintersonnentage, um weiter mit dem Filter zu arbeiten und mein erstes Bild eines Sonnenflecks noch zu verbessern. P.S. Leider waren ein paar Staubflocken auf dem Zenitprisma - jetzt aber nicht mehr.SFW
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Erster Einsatz bei der partiellen SoFi am 25. Oktober 2022Der neue, nunmehr 7.5nm anstatt 10nm SOLAR CONTINUUM Filter hatte sein "first light" im Safety-Herschelprisma am Tag der partiellen Sonnenfinsternis am 6 Zoll APO Triplett, da ich damit die gesamte Sonne gerade mal so auf den Kamerasensor bringen konnte, was bedingt durch die Telezentrik bei Verwendung vom Baader SunDancer II nicht möglich gewesen wäre. Ich habe den neuen SC Filter zusammen mit dem ND3.0 Filter im Herschelkeil verwendet wie zuvor jenen mit 10nm, aber jetzt keinen direkten Vergleich mit dem Vorgängermodell gemacht, dazu war in der Hektik während der SoFi keine Zeit. Wieviel Kontrastgewinn also gegenüber dem 10nm tatsächlich vorliegt kann ich somit nicht sagen, aber zumindest, dass das Ergebnis sehr ansprechend geworden ist. Bilder anbei vom Tag der SoFi und vom Folgetag, klarerweise ohne Mond. :-)Astro Tafelberg
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Rated: 0
3/13/2023 2:54 AM Baader 2" Cool-Ceramic Safety Herschel Prism Mark II – (Visual / Photo)
I have read that using a Baader IR-Pass Filter just to be extra safe might be a good idea. what do you think of using such a filter with this Herschel Wedge?
thank you!Is Answered? Yes (1 answer)
Answer rated: 0Of course, we will gladly sell you such a UV/IR-cut-filter. It doesn't do any harm, as long as it is of good quality and doesn't cause reflexions.
Such a filter may even be a wise choice if you decide to use the prism with ND-filters by other manufacturers, where you don't know if they let UV/IR pass or not. However, if you use our included filters, they do not only dim the visible light, but also block the remaining UV/IR.Answer by: Baader Web Team (Admin) on Mar 13, 2023 10:34:00 AMRated: 03/12/2023 10:28 PM Baader 3.5 / 4nm f/2 Ultra-Highspeed Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)
If I am using an Edge8/Hyperstar v4/294MM-Pro (21mm image diagonal, 28mm image circle), would I benefit from the smaller filters compared to the larger ones? I want to buy 2” for when I go full-frame, but I need to make sure it will work properly for my current setup as well.Is Answered? Yes (1 answer)
Answer rated: 0At f/10 or even with the 0.7x reducer, you do not need the highspeed filters, the regular filters will work better. To deal with the steeper light cone at faster f/ratios, the filters need to be pre-shifted, so that a ilter for f/2 needs to be different from a filter for f/3 and from one for f/4 or slower.
Please take a look at our filter selector at
https://www.baader-planetarium.com/en/baader-narrowband-highspeed-filter-selector/
and this blog post:
https://www.baader-planetarium.com/en/blog/preshift-and-further-information-concerning-baader-cmos-filters/Answer by: Baader Web Team (Admin) on Mar 13, 2023 9:32:00 AMRated: 03/12/2023 8:34 PM Baader UV/IR-Cut / L-Filter – CMOS-optimized
I am planning to use this filter with a ZWO ASI2600mc, for matching backfocus with another filters. Considering this camera already has a UV/IR cut filter built in, should I choose a clear filter? Or this filter would give additional UV/IR filtering?Is Answered? Yes (1 answer)
Answer rated: 0You can find the transmission curve of our filter at the product website, if you click on the filter size, and compare it to that of ZWO. Our filter lets light pass between 420 and 685 nm.
If the ZWO already completely blocks UV/IR and starts at the same wavelength, then it doesn't matter if you use a clear or a UV/IR-cut filter. Otherwise, the transmission window is defined by the narrower filter.
I can't find info about the UV/IR-cut-filter of that camera - only a graph for its QE value, which shows sensitivity in the UV and IR, too. So a UV/IR-cut should be an improvement.
But in general, we would recommend the UV/IR-cut-filter, anyway - then you can use it even if you chose sometime in the futur to get a new camera without an integrated UV/IR-cut-filter.Answer by: Baader Web Team (Admin) on Mar 13, 2023 9:11:00 AMRated: 03/12/2023 1:16 PM Baader Double T-Filterholder 1¼"
Will this work with the T2-part #27 on your Herschel wedge with a ZWO planetary camera (direct to the T-thread), I want to incorporate your 1.25" CalK filter. So the order would perhaps be: #27 - #31 (filter inserted) - ZWO camera T thread.
Thank youIs Answered? Yes (1 answer)
Answer rated: 0The adapter will give you a male T-thread on both sides, so you'll also need Baader T-2 Conversion Ring # 2958110
We have also have 1¼" Filter Holder for T-2 and 2" Filter Threads # 1508031. This set contains these two adapters and some more parts, with which you can use the filter either in a T-2-thread or a 2" filter thread.Answer by: Baader Web Team (Admin) on Mar 13, 2023 11:25:00 AMRated: 03/12/2023 1:02 AM Baader 5mm Hyperion 68° Modular Eyepiece
I inherited a complete set of the Hyperion EP. I noticed that each EP's 1.25" barrel is different in that there is glass in all but one and each are a different diameter. I am sure they are not on the original EP they came on. My question is this, is what these individual 1.25" adapters do documented, and if so, can it be made available?
Thank you,Is Answered? Yes (1 answer)
Answer rated: 0These lenses inside the 1.25" nose piece are similar to a Barlow element, and are necessary to make the eyepieces work with the desired focal length. You can find the resulting focal lengths in these PDFs:
https://www.baader-planetarium.com/en/downloads/dl/file/id/134/product/1206/hyperion_eyepieces_application_examples.pdf
and
https://www.baader-planetarium.com/en/downloads/dl/file/id/155/product/1206/hyperion_68_eyepieces_brief_description_and_recommended_use.pdf
Unfortunately, we haven't documented yet, which nosepiece belongs to which eyepiece - but as a rule of thumb, the shorter the eyepiece's focal length, the smaller is the lens in the nose piece. You can try this out by sorting the eyepieces by focal length and lens diameter. Then the magnification should increase, when you switch through all the focallengths from the longest to the shortest focal length.Answer by: Baader Web Team (Admin) on Mar 13, 2023 10:55:00 AMBaader Planetarium GmbHOur company exists now for more than 50 years. In this time, more than 15.000 Baader Planetariums (the first patented product of our company) help all over the world to give students an understanding of astronomical correlations. In our own manufactory, more than 500 observatory domes have been produced and delivered turnkey-ready. Instruments and telescope accessories from "Baader" are known for their high qualities by many astronomers and universities. We consider it our duty and obligation, not only to sell telescopes, but an indivdually selected telescope system, that brings you a lifetime of joy.