Baader T-2 VariLock Extension Tube - 29-46 mm
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Baader T-2 VariLock Extension Tube - 29-46 mm

£63.00
  (12 Reviews)
✓ 2 year warranty

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2x in stock shipped 1-2 working days

About this product

Model:  baader-2956946
Part Number:  2956946

Baader VariLock 46 Lockable T2 Extension Tube (2956946)

Baader T-2 VariLock extensions are two infinitely adjustable rings in the T-2 System. By loosening then after adjustment locking the clamp ring the extension tubes can be adjusted to the desired length by using a millimetre scale. All necessary tools (allen key, hook wrench) are included.

VariLock is an ideal tool for setting the exact focus at distances when using field correctors with critical focus position.

This Lockable T-2 Extension Tube can be adjusted between 29 mm and 46 mm with clamping and Allen key.

Technical specifications

  • Telescope side connection: female T-2 thread (M42 x 0.75)
  • Eyepiece/camera side connection: male T-2 thread (M42 x 0.75) or T-2 ring dovetail 52 x 6.5mm for Baader bayonet adapter
  • Optical length: 29-46 mm adjustable over a millimetre scale
  • Outside diameter: 50.8mm / 2 "
  • Inside diameter: 38mm when T-2 thread inserted, 41mm when the 52mm dovetail ring inserted

 

Customer reviews

Average Rating (12 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Great product
30 September 2023  | 

Some detailed advice helped me set up my image train. One of a kind custom service in my experience. Thank you kindly. Great product, very versatile.


Rating (max 5):  
Back focus 'tuning'
17 November 2021  | 

Perfect tool for 'tuning' the back focus on my setup. Highly recommended. Excellent service from FLO too.


Rating (max 5):  
Used to accommodate non flat field focal plane on old SCT
18 March 2021  | 

Works as expected. Wanted it to get the right part of an image taken on an old SCT (Celestron Ultima 2000 tube) in focus - i.e. round stars. Easy to use, rotate the outer part to the right length and then lock in place. Great service from FLO.


Rating (max 5):  
Baader Varilock
10 February 2021  | 

Bought to use with the Baader Flipmirror and Zwo camera, all fits together well, not had chance to use it yet but everything works ok.


Rating (max 5):  
55 mm back focus with Atik Horizon II
06 February 2021  | 

With an ED72 scope and SW reducer this Varilock allows you to get the required 55mm focus spacing. Works well, is solid when clamped and is easy to adjust.


Rating (max 5):  
Superb if you have multiple cameras.
26 June 2020  | 

My ZWO ASI294 and Atik Horizon have different (in camera) back focus. To achieve the 105mm back focus required behind a f/6.3 Celestron Focal Reducer I use a T-Adapter (50mm) and Baader Varilock. To switch between cameras, I simply loosen its locking ring; perform a couple of turns of the inner ring; then lock the locking ring. Takes me a mere few seconds and no wobbly visual back or diagonal in the chain. Much easier than fiddling with multiple spacers..


Rating (max 5):  
Perfect for my needs and very well made
23 May 2020  | 

This was perfect for my needs, that being an adjustable spacer/tube between the visual back plus Celestron 6.3 Reducer/Corrector, and a Celestron Filter Wheel with a Syris 236M on the other side. I needed 105mm (maybe up to 110mm some suggest) to be in the perfect focus zone for the 6.3 Reducer. The ability to micro-focus against the 6.3 Reducer optimum distance, makes it a great option for my wider field Astrophotography with my 9.25 SCT. The item is very well made, in typical Baader style.


Rating (max 5):  
Perfect for my needs and very well made
23 May 2020  | 

This was perfect for my needs, that being an adjustable spacer/tube between the visual back plus Celestron 6.3 Reducer/Corrector, and a Celestron Filter Wheel with a Syris 236M on the other side. I needed 105mm (maybe up to 110mm some suggest) to be in the perfect focus zone for the 6.3 Reducer. The ability to micro-focus against the 6.3 Reducer optimum distance, makes it a great option for my wider field Astrophotography with my 9.25 SCT. The item is very well made, in typical Baader style.


Rating (max 5):  
Spot On
12 June 2019  | 

FLO were kind enough to assist me with my first camera back focus measurements and this item was on the list of needed items. It works very well indeed. Easy to set and locks solid. The only thing I did was to add a tiny spray of WD40 to the threads. But only a hint of oil !!
Great item.


Rating (max 5):  
Perfect
25 August 2018  | 

I already had the 29mm version of this adapter but since changing my setup I needed something that would cover exactly 37mm spacing for my field flattener.
This done the job perfectly and completely hassle free. I screwed it down to 37mm and connected to my field flattener and camera. After double checking with a set of digital calipers it was bang on and hasn't moved since.
Well made, solid and the locking ring is a very nice touch to keep everything in place.


Read all 12 customer reviews...

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