Baader Planetarium

Baader Planetarium: Over 50 Years of Innovation in Astronomy

From accessories to turnkey observatories

The company Baader Planetarium is a middle sized enterprise having 50 years experience in producing and installing astronomical equipment.

More than 600 observatory domes of sizes from 2 m up to 8.5 m have been mounted, together with a large number of projection domes for planetarium installations up to 10 m in diameter. Observatory domes serve for a multitude of applications for scientific use around the world specialized to work under the hardest of environments, with installations in Antarctica (Dome C - 84°C) to high Arctic regions such as Svalbard (NyAalesund -45°C), Ellesmere Island (Eureca -60°C), in desert conditions with hermetic seals against dust and a number of high Alpine locations. Also the company specializes in high end robotic telescopes with apertures up to one meter as European sole distributor of Planewave Instruments USA, telescope mounts of varuious configurations, Echelle spectrographs featuring a resolution up to 20 000 lambda/delta lambda under Licence of MaxPlanck Institution(MPI).

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  1.   Glasspathcorrector 1:1,70 for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V)

    # 2456316Z

    € 127.00 Price excl. German VAT tax (19%): € 106.72
    • Glasspathcorrector Factor 1,7. Focus gain: ca. 35 mm
    • Insert diameter: ∅ 38 mm
    • Suitable to insert into the Baader MaxBright® II Binoviewer or Mark V Großfeld (Giant)-Binocular (#2456410 , € 1425,-)
    • A Baader Glaspathcorrector is not a Barlow lens! The reason for this name (in Germany the name Glaswegkorrektor® is a protected trademark by Baader Planetarium) is only secondly the displacement of the focal point
    • A Glaspathcorrector is primarily intended to correct the prismatic color fringing that occurs on Refractors due to the high amount of glasses used in binocular prisms
    • Please note: The Baader MaxBright® II Binoviewer with case (#2456460 , € 479,-) is the only Baader-Bino where you can choose between Zeiss ring-dovetail and T-2 thread adapter.
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  2.   Conversion Ring M48a/M48a

    # 2958555

    € 25.00 Price excl. German VAT tax (19%): € 21.01
    • Converts an M48 (Zeiss) female thread in an M48 male thread
    • Total length of 8.8 mm with an optical length of 0.8 mm
    • Made of hardened, stainless steel
    • This adapter is included in the scope of delivery of the Baader FlipMirror II Star Diagonal (#2458055 , € 228,-)
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  3.   Baader Hyperion Stepper-Ring M62 onto M72

    # 2958072

    € 22.00 Price excl. German VAT tax (19%): € 18.49
    • To connect Hyperion eyepiece to larger telescope systems
    • Requires Hyperion DT-ring SP 54i / M62a
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  4.   Baader 3", 60mm rider clamp

    Baader 3", 60mm rider clamp

    # 2450316

    € 39.00 Price excl. German VAT tax (19%): € 32.77
    • 3 inches for Losmandy / 3" dovetails with additional matching holes and screws for mounting the Baader Stronghold
    • Width: 60mm for V or Z terminal
    • Includes Screws
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  5.   DADOS: Baader Blaze Reflection Gratings 200 L/mm

    # 2458557

    € 232.00 Price excl. German VAT tax (19%): € 194.96
    • Blaze Reflection Gratings 200 L/mm
    • cemented onto Tilting grating holder
    • 1x included in DADOS scope of supply
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  6.   Baader FCCT II for RASA 8" – suitable for Ø 90 mm QHY-Cameras (e.g. QHY 268 / 294 / 533)

    # 2459071

    € 345.00 Price excl. German VAT tax (19%): € 289.92
    • Filter changer and Tilter (mechanical image position corrector), specially designed for Celestron RASA 8" Astrograph and QHY cameras with 90 mm diameter (e.g. QHY 268M (version before June 2023) / 294 / 533)
    • The Baader FCCT (Filter Changer Camera Tilter) allows the use of filters as well as the adjustment of camera plus filter to the optical path
    • With the FCCT, a very fast adjustment or finest readjustments are possible - without having to unscrew the camera each time. This makes working with the RASA 8 a pleasure
    • 3D-printed filter sliders are available for the FCCT, which exclusively accommodate unmounted filters with diameters of 31 mm / 36 mm and 2" (w/o cell)
    • We offer selected 2" filters specifically for the FCCT in an unmounted variant, but basically all Baader 2" filters will work when removed from the filter cell
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  7.   Baader Double T-Filterholder 1¼"

    # 1508030

    € 33.00 Price excl. German VAT tax (19%): € 27.73
    • Filter holder with T-2 threads on both sides and 1¼" M28.5 internal filter thread.
    • Used for attaching 1¼" filters before Baader binoculars
    • A 1¼" filter can be attached from either side and will sit within this adaptor
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  8.   Baader double-balancing plate-set with 3" plate, V-clamp and Stronghold

    # 1500350

    € 402.00 Price excl. German VAT tax (19%): € 337.82
    • Versatile, adjustable double-balancing plate-set with two Vixen-style clamps
    • For 3" (Losmandy-style) dovetail-clamps or mounts with standard 3,2" hole pattern
    • Compatible with other clamps and guidescope rings
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  9.   Optical Wonder™ Cleaning Fluid

    Optical Wonder™ Cleaning Fluid

    # 2905007

    € 14.50 Price excl. German VAT tax (19%): € 12.18
    • 100ml Optical Wonder™ Cleaning Fluid, dislodges dirt, aggressive aetherical oils from pollen and fat
    • Dries up completely without leaving any residue or wipemarks
    • cleans without scratching: eyepieces, objective lenses – even mirrors (please see separate instruction)
    • Works on all sensitive optical surfaces
    • Forms an invisible protective layer against bacteria and fungi which tend to eat glass and coatings
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  10.   Baader Metal M48 Dustcap with dovetail

    # 2958602

    € 25.00 Price excl. German VAT tax (19%): € 21.01
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  11.   Baader Reducer 2"/ 1 ¼"  (T-2 part #15)

    # 2408190

    € 46.00 Price excl. German VAT tax (19%): € 38.66
    • 2" external thread to 1 ¼" internal thread reducter / eyepiece adaptor
    • Strong grip with 2 screws and bronze clamp ideal for the heaviest eyepieces or cameras
    • Additional T-2 thread on the 1 ¼" side allows connection of camera T-rings or T-2 adapter rings for the eyepiece. A separate T-2 ring protects this thread when not needed
    • The telescope side front end includes a 48mm filter thread for 2" filters, and a T-2 thread.
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  12.   IMP85 Adapter to IR90 Focuser Short (20mm)

    # 2451316

    € 185.00 Price excl. German VAT tax (19%): € 155.46
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  13.   Baader1¼" Amici-erecting-prism 45° with 24mm free aperture

    Baader1¼" Amici-erecting-prism 45° with 24mm free aperture

    # 2956150

    € 84.00 Price excl. German VAT tax (19%): € 70.59
    • Much larger prism as in the so-called "Erecting prism"
    • Many Erect image prisms have only 19 mm free passage opening and therefore are not suitable for terrestrial observations at low magnifications, because the field of the eyepiece is shaded by the too small prism.
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  14.   M54 Extension Tubes (5 / 7.5 / 10 / 15 / 30 / 40 mm)

    M54 Extension Tubes (5 / 7.5 / 10 / 15 / 30 / 40 mm)

    From: € 32.00 Price excl. German VAT tax (19%): € 26.89
    • Used to adjust the working distance of larger cameras and similar accessories with M54 thread
    • Telescope side M54x0.75 female thread, 3.5 mm depth
    • Eyepiece-/camera side M54x0.75 male thread, 3 mm length
    • High-quality Aluminum, available in different lengths
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  15.   Baader Extension / Spacertube 1¼"

    # 2456325

    € 33.00 Price excl. German VAT tax (19%): € 27.73
    • To adapt long focal length eyepieces (30-42mm) onto Maxbright Bino-Viewer
    • 2 pieces required for Baader Maxbright Bino-Viewer
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  16.   O-III f/3 Ultra-Highspeed-Filter (4nm) – CMOS-optimized
    From: € 245.00 Price excl. German VAT tax (19%): € 205.88
    • Baader O-III f/3 Ultra-Highspeed Filter – Premium Grade
    • 4 nm FWHM, recommended for fast optical systems from f/3.4 to f/2.3
    • Specially designed for the special filter requirements when used with fast f/3 optics
    • For highest contrast even at strongest light pollution, minimizes star size, emphasizes finest nebula detail – indispensable under Bortle 9/8/7/(6) skies
    • Reflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)
    • Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim
    • Optimized for modern CMOS cameras, but likewise excellent for CCD camera technologies
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  17.   Microstage II Digiscoping Adapter

    Microstage II Digiscoping Adapter

    # 2450330

    € 55.00 Price excl. German VAT tax (19%): € 46.22
    • 2" camera adapter for digital compact cameras (for eyepieces with diameters between 29 and 63mm )
    • Secure grip! 25mm wide eyepiece clamp, for safely holding heavy cameras without any torsion. Much more stiff and rigid construction than all clones
    • Sturdy swivel arm with clickstop for cameras up to 1.5 kg
    • For afocal projection photography
    • ClickStop Twist-Lock-Mechanism

    Photography with larger cameras

    The Microstage II is the universal solution for small compact cameras. Large cameras up to DSLR require a sturdier connection. In this PDF you find an overview of all adaptation options using the camera bayonet or lens thread


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  18.   Baader H-alpha 2" unmounted (Ø 47,4 mm) f/2 Highspeed-Filter (6.5nm) for FCCT – CMOS-optimized

    # 2961153U

    € 230.00 Price excl. German VAT tax (19%): € 193.28
    • 47.4 mm (2" w/o cell) x 2 mm Baader CMOS H-alpha f/2 Highspeed Filter – Precision Grade
    • 2" Filter removed from filter cell, specially selected for use with 2" Filter sliders of the Baader FCCT (Filter Changer Camera Tilter) for RASA 8" and QHY cameras (various versions available)
    • 6.5 nm FWHM, recommended for extremely fast optical systems from f/3.4 and faster
    • Specially designed for the special filter requirements when used with extremely fast f/2 optics like the Celestron RASA astrographs
    • Reflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)
    • Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim
    • Optimized for modern CMOS cameras, but likewise excellent for CCD camera technologies
    Learn More
  19.   Baader M43a x 0.75 / T-2a Adapter (e.g. for Takahashi)

    # 2458199

    € 37.00 Price excl. German VAT tax (19%): € 31.09
    • Adapter with M43 x 0,75 male thread to T-2 (M42 x 0,75) male thread, e.g. for Takahashi instruments
    • This connection ring allows to connect e.g. a binoviewer or a ClickLock® eyepiece directly at the focuser with M43 x 0,75 female thread (e.g. Takahashi)
    • Our M43x0.75 / T-2 (TAK)-Adapter includes a M34 inner thread to mount our T-2 Glasspath-Correctors to use with Binoviewers
    • Optical path length only 0.8 mm
    • To use T-2 parts on a M43i x1 female thread (meaning a M43 female thread with 1mm pitch per turn), we recommend our Baader M43a x 1 / T-2a Adapter (e.g. for Vixen) (#1508037 , € 33,-)
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  20.   Baader H-alpha f/2 Ultra-Highspeed-Filters (3.5nm) – CMOS-optimized
    From: € 275.00 Price excl. German VAT tax (19%): € 231.09
    • Baader H-alpha f/2 Ultra-Highspeed Filter – Premium Grade
    • 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for extremely fast optical systems from < f/2.3
    • Specially designed for the special filter requirements when used with extremely fast f/2 optics like the Celestron RASA astrographs
    • For highest contrast even at strongest light pollution, minimizes star size, emphasizes finest nebula detail – indispensable under Bortle 9/8/7/(6) skies
    • Reflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)
    • Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim
    • Optimized for modern CMOS cameras, but likewise excellent for CCD camera technologies
    Learn More

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