Baader T Adapter (BTA) for SC and MAK Telescopes (T-2 part #21)

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Baader T Adapter (BTA) for SC and MAK Telescopes (T-2 part #21)

T-2 Part #: 21

# 2408160

€ 63.00 Price excl. German VAT tax (19%): € 52.94

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  • A widefield camera adapter for all Schmidt-Cassegrain Celestron/Meade telescope tubes. Allows T-2 accessories to be used with an SCT thread.
  • Telescope side 2" UNF 24 TPI, 60° (50.8mm) nut with internal thread. Focus side T-2 external thread. Optical path length 16mm.
  • Short T-adapter for all SC and MAK telescopes. Wide image field ideal for mounting the Baader or Zeiss binocular to Celestron Telescopes.
  • Fits all Scmidt-Cassegrain 2" thread for 5/6/8/9.25/11/14 OTAs

Product Questions and Answers

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I am interested in getting the Alan Gee Telecompressor, and would like to mount it using this Baader T Adapter (T-2 part #21). However, I also have the #2956220 SC / HD-Clicklock Eyepiece clamp for my Celestron SCT 9.25. I wonder if I can attach the Alan Gee to the T-2 Part #21 and then have the #2956220 Clicklock on top of it, to make it really easy to change from visual to astrophotography applications. What are additional components that I would need to reach focus with a ZWO ASI224MC Camera?

Thank you for your help!
Question by: Carlos Labastida on Mar 23, 2018 10:15:00 PM | 1 Answer(s)

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Can the T thread section be rotated relative to the SCT thread section and locked in any chosen orientation of the camera? There appears to be a locking screen (possibly even three of them) to do this but it is easy to misinterpret images on a web page.
Question by: Richard Campbell on Oct 21, 2016 10:57:28 PM | 1 Answer(s)

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Hello, I have the #2408160 adapter, is it equivalent to the #2958500B ultra-short adapter if I use only 2 parts on the 3? I’m looking to reduce 8mm of optical path for my camera.
Do you have a solution to achieve a T2 length of 28.35mm? This is the backfocus difference for the SCT EdgeHD 8 with and without the focal reducer. Perhaps you may add a new part in your catalogue as this telescope is popular (is it a simple t2 extension tube).
Question by: Pierre-André Tapparel on Jan 20, 2022 6:21:00 AM | 1 Answer(s)

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I would like to know the total physical lenght (without the T2 thread) of the adapter BTA for SC and MAK (T2 part #21) 2408160. And also what is the lenght of the SC thread of this adapter?
Question by: Armando Zurlo on Feb 6, 2019 5:52:00 PM | 1 Answer(s)

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Additional Information

Manufacturer Baader Planetarium
SKU (#) 2408160
EAN Code 4047825012692
Net weight (kg) 0.05
Optical length (mm) 15
T-2 Part # 21
Usage SC-T photo adapter
Inner Diameter / Clear Aperture (mm) 38
Outer Diameter 56
Adaptable to all male 2" SC-Gewinde from 5/6/8/11/14 OTAs
Outer Connection (eyepiece/-camera-sided) M42 x 0.75 (T-2)
Inner Connection (lens sided) M42 x 0.75 (T-2), 2"/SCT Thread (50.8mm)
Compatible Brands Astro T-2, Baader Planetarium, Celestron
Type of Adapter Reducing Adapter

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Martin, Wolfgang 217/08/2021 06/08/202108:03
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Sehr gut!
Bin zufrieden und passt mit dem AlanGee.
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