Baader Planetarium

• Telecentric with 2" outer diameter and T-2 threads on both sides
• Aplanatic, with 4x focal length extension to achieve a parallel f/30 beam in conjunction with ~f/7,5 optics systems – free of field curvtare
• Primarily calculated and produced for H-alpha at 656,3 nm, delivering maximum Strehl (definition brightness)

• Suitable for all UFC systems
• Closes the aperture of UFC and telescopes at the same time to create darks with CMOS Cameras
• Vignettes the optical path 100% when inserted
• STL files for free download are available under TAB Downloads. You only need to login with your customer account or register on our website.
  Please note:  The download file is licensed under the Creative Commons License CC BY-NC-SA 4.0. You may pass on the file under Attribution © Baader Planetarium GmbH as well as linking the license and indicating any changes. The file may not be used for commercial purposes. If the file is changed, it must be redistributed under the same license.

• Stop ring 1¼" for sliding onto 1¼" eyepieces barrel
• Precise adjustment ring with 1¼" inner diameter and two screws
• To fix the insertion or the focal position of the Off-Axis system and other guiding scope systems.
• Effective length 4.8mm

• Connection camera side to M68x1 female thread on the Port 1 of the Instrument Multi Port IMP85 (#2451300 , € 7950,-)
• Designed and manufactured in Germany
• Connection on telescope side: 120 x 7.5 mm dovetail
• Black anodized
• Optical length: 0.5 mm
• Inner and outer diameter: M68x1i / D120 x 7,5 mm

• Baader Classic Ortho 10mm 1¼" Eyepiece , apparent field of view 52°, incl. winged rubber eyecup
• Parfocal Eyepiece series with very high transmission
• This eyepiece delivers a pure-white image with outstanding sharpness and contrast
• True High-Transmission- (HT) and Multi-Coating (MC) on all glass-air-surfaces offer a brilliant image while showing almost no internal reflections
• Suitable as projection eyepiece for OPFA (Eyepiece Projection adapter)

• Conversion of the lamp socket of the electrically driven solar system (tellurium) of an already purchased  The Original: Baader Planetarium (#2000000 , € 2450,-) to be able to mount the modern sun globe, glass with screw thread. Please note on the right, the simple plastic version, which was only plugged on the base, is no longer produced.
• Labour time for the conversion includes fitting the new socket as well as the socket itself and includes the Sun globe, glass with screw thread (#2000308 , € 42,-)
• If an old Osram projection lamp is still used  Replacement bulb (halogen) with ceramic holder (#2000316 , € 48,-) must be purchased separately.
• Please note the Instructions for secure Packing of the Tellurium of a Baader Planetarium for Shipping

• Hyperion SP 54 thread protection ring
• Material: high quality silicone - non-aging, no chemical softeners, non smelling, not getting brittle over time

• For double mounting plates (#2451559)
• As well as self-constructions
• Incl. screws

NEW VERSION: Steeldrive II motor focuser with Controller

Steeldrive I for Classic Steeltracks is not produced anymore. On this product page you can inform yourself about the Steeldrive I for classic Steeltrack focusers and download the corresponding software.

More details about Steeldrive II

• Silently heated H-alpha-Filter with integrated 3x telecentric system with 2nm block filter.
• Half-width (FWHM) of 0.6±0.1Å at an effective focal ratio of f/30
• Resistant to ageing: The dielectric coating of the blocking filter and the airtight storage of the SolarSpectrum Etalon filter in oil prevent the ageing process
• The complete disk of the sun as well as prominences are visible in telescope with focal lengths up to about 600mm
• shows prominences and solar surface details for visual observations as well as for photography and bino-viewers
• For telescope with 80mm aperture or less, no additional D-ERF (energy rejection filter) is necessary
• Userfriendly electrical temperature control; additional micrometer screw for observiong fast changes in the blue wing of the H-alpha-line
• Nosepiece: 2", 1,25"

• Eyepiece 1¼ "/ T-2 internal thread priced version with M 4 screw
• 1 M4 clamp screw
• Telescope side with T-2 internal thread
• For 1¼" eyepieces or connecters

• Temperature sensor to compensate the drift automatically, if there are large temperature differences
• Flat design, ideal to be attached to the optical tube
• Temperature sensor with phone connector and 1m cable, also supports control of dew-shield-heating
• Can be used with the Steeldrive II Motor Unit or Steeldrive II Controller

• Full field sharpness: The ultra-sharp 76° undistorted flat field is unsurpassed by any other modern wide field eyepiece. Also on-axis sharpness and contrast rivals our best, ever released planetary eyepieces, the Zeiss Abbe ZAO I & II.
• Long Eye Relief and optimized for bino-viewing:  ~ 20mm of eye relief provides that famous spacewalk feeling, incredibly impressive with bino and both eyes.
• Hard aluminium alloy with industrial quality UV-stabilized anodizing surrounds a set of 8 lenses with one ED- and two Lanthanum elements.
• 2" and 1¼" nosepiece: integrated into one eyepiece of 55mm max outer diameter, supports bino-viewing even for kids.
• Photo-Video Adaption: Like their Hyperion siblings, all Morpheus eyepieces make superb imaging projection optics with the M43 photo/video-thread
• The Morpheus 17.5 mm is the only eyepiece of the Morpheus series that is not parfocal to the rest of the series. It requires 2.5 mm infocus.>/li>

• 47.4 mm (2" w/o cell) x 2 mm Baader CMOS UV/IR-Cut (420 – 685 nm) Bandpass Filter, suitable from f/15 to f/1.8
• 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)
• Reflects harmful thermal radiation in the infrared spectral range
• Provides 98% transmission over the entire visible spectrum from 420 - 685 nm
• Prevents blurred star imaging with red-sensitive digital and CCD/CMOS cameras
• 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

• To fit #2458196 Ultrashort 2" clamp onto Pentax OTA
• Pentax Adapter M84 / M68
• Telescope side with Carl Zeiss M68 Pentax thread on ocular

• Baader H-Beta Narrowband Filter – Precision Grade
• 5.5 nm FWHM, recommended for optical systems from f/15 to f/1.8
• 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

• suitable for temperatures from -55°C up to +30°C
• excellent grease-quality for low temperature application as prevailant at polar-circle regions
• not suitable for permanent use at temperatures above 25°C

• Baader SLOAN-u' Bandpass Filter, suitable from f/15 to f/1.8
• SLOAN/SDSS (ugriz’) photometric filter with transmission according to SLOAN-specification
• Manufactured with most advanced ion beam coating technology / Daylight-Proof
• 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
• Equally suitable for modern CMOS cameras as well as for older CCD camera technologies

• For locking camera orientation
• Fits between (almost) any of our T-2 fittings
• Allows the rotational rotation of flanged accessories, locking in the appropriate position
• An important component to heavy CCD cameras to connect directly with T-2 thread without the compromise of a plug connection