Manufacturer: -TS Zubehör
Product number: TSFOCR2M

EUR 199,00


incl. 19 % VAT (DE)  
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excl. 6.95 € shipping costs (DE)  
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  • FAQ..
TS 2" Dual-Speed Crayford Focuser for Refractor Telescopes
The Crayford focuser is well suited for observation and astrophotography with DSLR or astro cameras. We recommend the focuser for accessories up to approx. 2 kg. The focuser is also often bought for the self construction of refractor telescopes or for the improvement of existing telescopes.

The focuser is particularly suitable for many refractor telescopes from Skywatcher, Celestron and Orion. The connection adapter fits directly to the tube or into the reducer which is attached to the back of the tubes. Please measure the diameter before ordering. The tube (or the reduction adapter) must have an inner diameter of 86 mm to fit.

The 1:10 dual-speed micro-reduction significantly improves focusing. Particularly in astrophotography, sharper images are possible because the focus is precisely reached. But observation also becomes easier, as you know exactly when optimum sharpness has been achieved.

Attaching the focuser to the tube:
A telescope adapter with an outer diameter of 86 mm is also included in the scope of delivery of the focuser. In the adapter are three M4 threads at an angle of 120°. This allows you to attach the focuser to your refractor. Of course we can also make an individual adaptation for your telescope. We will be happy to advise you.

Quick manual
Telescope-Service provides a quick guide for the TS Crayford focusers. You can download the PDF here.
Operating principle:Crayford
Connection telescope side:D=86 mm connection adapter
Connection eyepiece side:2" and 1.25" receptacle
Weight:approx. 860 grams with 1.25" reduction
Travel:74 mm
Micro-reduction accuracy:0.016 mm travel with a rotation of 5°.
TS 2" Crayford focuser
Reduction from 2" to 1.25"
Connection adapter (from GSO dovetail ring)
The base is optional


Question:
What´s the best way to adjust a Crayford focuser??

Answer from Teleskop-Service:
The eyepiece extension has two knurled screws at the base between the two rotary handles. With these you can adjust the eyepiece extension.
The screw on the eyepiece side is for adjusting the friction (grip).
The screw on the tube side is for locking the focuser position.


1. Insert the eyepiece and possibly the star diagonal into the focuser so that the focuser is under load.

2. Loosen the screw on the telescope tube side (locking).

3. Now tighten the screw on the eyepiece side just enough to prevent the focuser from slipping when the eyepiece is pointing downwards (maximum load).

With this you have optimally adjusted your Crayford focuser for observation and of course also for photography..


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Reviews

Written by Ralf Griffel
on 2023-06-21

"Hab damit einen Bresser Refraktor AR102 ausgerüststet. Wesentlich besser und stabiler als das klapprige Plastikoriginal."

Written by Lubos Soltes
on 2019-11-04

"Upgraded my old teleskope to something completely different. The only issue is the slippage of the focuser when not tightened fully (even the empty draw tube will slide out). Other than that, excellent product."

Written by Udo Krabsch
on 2016-12-04

"Der Auszug macht einen solieden Eindruck und ist leicht in der Handhabung"