Ultrashort 1¼" / T-2 Clamp

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Ultrashort 1¼" / T-2 Clamp

T-2 Part #: 8C

# 2458121

€ 31.00 Price excl. German VAT tax (19%): € 26.05

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  • Ultra short 1¼" eyepiece-clamp (w. brass locking ring)
  • Optical length: 20mm
  • Optimized for guiding camera, w. three set screws for utmost stability and for centering of undersized camera-nosepieces
  • adapts onto male T-2 thread
  • First introduced as part of our Vario Finder 10x60 – long avaited individual part within the Baader Astro T-2 family of adapters

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If this is attached to the T-2 1C prism diagonal, will the nosepiece of a 1.25" eyepiece touch the prism surface? I'm concerned because the measured nosepiece length is 26mm, while the stated length of this clamp is only 20mm.
Question by: Dan Pechiu on Apr 3, 2021 4:09:00 AM | 1 Answer(s)

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Additional Information

Manufacturer Baader Planetarium
SKU (#) 2458121
EAN Code 4047825034588
Net weight (kg) 0.05
Optical length (mm) 20
Clamping System Screw clamps
T-2 Part # 8C
Inner Diameter / Clear Aperture (mm) 1.25" (31,75mm)
Outer Diameter 52
Adaptable to Guiding Cameras
Inner Connection (eyepiece/-camera-sided) ø 1¼" (31.75 mm)
Inner Connection (lens sided) M42 x 0.75 (T-2)
Type of Adapter Eyepiece Clamp

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Aitsu 03/01/2024 04/01/202414:35
  • more than 3 month(s)
  • Rating:
Ultrashort-1¼ review
I used it with 32 mm Soviet TAL 1 telescope oculars. I redesigned the ultrashort-1¼ to 32 mm. I want to use it with Soviet lens MC MTO-11CA 10/1000. I would like to get some advice about this clamp, if I can use it with this product : Baader 21mm Hyperion 68° Modular Eyepiece. Probably I will need extension tube 0,75 mm - 42 mm, is there a possibility to buy extension tubes separately or do I have to buy them all together. I saw it on your website.
  • Very satisfied with the product, now i can use details from Soviet times, made it compatible.
  • Nothing to complain about
Thanks for your review. Yes, you can buy the extension tubes seperately. We offer the following lengths:
Baader T-2 / 7.5 mm Extension Tube #1508155
Baader T-2 / 15 mm Extension Tube #1508154
Baader T-2 / 40 mm Extension Tube #1508153
as well as a T-2 Fine-Adjustment ring 1mm (gold) - Aluminium #2457913
and the variable adapters
Baader VariLock 29, lockable T-2 ExtensionTube 20-29mm with spanner tool # 2956929
Baader VariLock 46, lockable T-2 ExtensionTube 29-46mm with spanner tool # 2956946

Also, the Ultrashort-Clamp works fine with the Hyperion eyepieces. It is still long enough, and the locking screws are slim enough, so that the wider eyepieces have got no problem.
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