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TS-Optics 2" Dual Speed Crayford Focuser for Newtonian Telescopes

Name: TS-Optics 2" Dual Speed Crayford Focuser for Newtonian Telescopes
Brand: -TS Zubehör
SKU: TSFOCN2M
Price: 219 EUR
Rating: 5 (1 reviews)

The 2" Crayford focuser allows focusing free from play and is suitable for observation and astrophotography.

With the optional base, the extension can be adapted to Newtonian telescopes.

Adaptation to the base via a dovetail ring, which tapers conically, so that the focuser cannot tilt.

65 mm overall height from the underside (dovetail ring) of the focuser to the 2" receptacle

Connection on the eyepiece side: 2" and 1.25" receptacle with compression ring

Focuser travel 35 mm

Largely dimensioned and stable ball bearings prevent the draw tube from tilting even under higher loads

1:10 micro-reduction (dual speed) enables precise focusing, for example for astrophotography

Manufacturer: -TS Zubehör

Product number: TSFOCN2M

EUR 219,00

incl. 19 % VAT (DE)

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excl. 6.95 € shipping costs (DE)

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rating: 5.0 of 5

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TS-Optics 2" Dual Speed Crayford Focuser for Newtonian Telescopes

The 2" Crayford focuser allows focusing free from play and is suitable for observation and astrophotography.

With the optional base, the extension can be adapted to Newtonian telescopes.

Adaptation to the base via a dovetail ring, which tapers conically, so that the focuser cannot tilt.

65 mm overall height from the underside (dovetail ring) of the focuser to the 2" receptacle

Connection on the eyepiece side: 2" and 1.25" receptacle with compression ring

Focuser travel 35 mm

Largely dimensioned and stable ball bearings prevent the draw tube from tilting even under higher loads

1:10 micro-reduction (dual speed) enables precise focusing, for example for astrophotography

Details..
Technical data..
In the box..
FAQ..

TS 2" Dual-Speed Crayford Focuser for Newtonian Telescopes

The Newtonian 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 Newtonian telescopes or for the improvement of existing telescopes.

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
The focuser has a conical dovetail ring with a diameter of roughly 78 mm on the bottom side. The focuser fits directly to the different bases. So you can easily adapt the focuser to your tube.

Quick manual

Telescope-Service provides a quick guide for the TS Crayford focusers. You can download the PDF here.

Operating principle:	Crayford
Payload:	2 kg
Connection telescope side:	D=78 mm dovetail ring
Connection eyepiece side:	2" and 1.25" receptacle
Drawtube diameter:	58 mm
Drawtube travel:	35 mm
Micro-reduction accuracy:	0.016 mm travel with a rotation of 5°
Weight:	approx. 750 grams with 1.25" reduction

TS 2" Crayford focuser

Reduction from 2" to 1.25"

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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