Baader Focusing Eyepiece Holder 1¼" / T-2 (T-2 part #08A)

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Baader Focusing Eyepiece Holder 1¼" / T-2 (T-2 part #08A)

T-2 Part #: 08A

# 2458125

€ 37.04 Price excl. German VAT tax (16%): € 31.93

In Stock  


  • 1¼ "/ T-2 eyepiece with fine focus (5mm focus travel)
  • With three eyepiece clamping screws for fine centering - as well as rotation locking screw to secure the exact focus position
  • Telescope side with T-2 internal thread
  • For 1¼" eyepieces or connecters

Product Questions

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I purchased the Hyperion Zoom and the MPCC Mark III. Can you tell me how to adapt the eyepiece to the coma corrector?
I also want to use other eyepieces. How do I know the right distance between fieldstop position and the MPCC?
Question by: Vincent F. on Oct 7, 2016 1:08:00 PM | 1 Answer(s)
The specifications state 5mm of travel; how far does the focus ring turn to produce this 5mm? 1/4 turn? Full turn?
Question by: Rich H on Aug 22, 2019 5:31:00 PM | 1 Answer(s)
I would like a helical focuser that slides into a 1.25" focuser. Is they an adapter that lets this do that?
Question by: Clayton E Cramer on Jul 2, 2019 5:15:00 PM | 1 Answer(s)
Choosing Clicklock diagonal - exact dimensions needed.
Question by: Krzysztof K. on Nov 3, 2016 9:11:00 AM | 1 Answer(s)
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Additional Information

Manufacturer Baader Planetarium
SKU (#) 2458125
EAN Code 4047825010162
Weight (kg) 0.054
Optical length (mm) 29 – 35,5
Clamping System Screw clamps
T-2 Part # 08A
Screw Type 3x M3 clamping screws and M3 Rotations-Feststellschraube
Inner Diameter / Clear Aperture (mm) 31,75 (1¼")
Outer Diameter 47
Inner Connection (lens sided) Thread, T-2 (M42 x 0,75)
Inner Connection (eyepiece/-camera-sided) Clamp, 1¼"
Compatible Brands Astro T-2, UNC, Baader Planetarium, Celestron
Type of Adapter Eyepiece Clamp, Reducing piece

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John 83/03/2020 24/03/202010:58
  • more than 5 month(s)
  • Rating:
Baader Focussing Eyepiece holder # 2458125
It works great! I use it on visual observations.
I have one on my f/7.5 Apo refractor, which has standard a 10:1 focussing reducer. It is used for extra fine focussing while observing planets. This way I am very sure I have the sharpest view.
I use one on a f/5 achromatic refractor too. Even with the standard 10:1 focusser it is sometimes difficult to judge if you are in focus or not. With this little gadget there is no problem. It outclasses by far the standard focusser.
  • Very fine focussing is possible, even on coarse focussers. Hardly any extra weight.
  • The thumbscrew for blocking the fine focusser could be a tad bigger. That way one can feel the difference compared to the other thumbscrews. Very handy in the dark. I installed a bigger one.
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