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新上架商品

CELESTRON HUMMINGBIRD 9-27X56 ED單筒望遠鏡(輕便腳架組)

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GSO CRF001 CRAYFORD調焦座
 
 
貨號: 2201200292
列印商品資訊
Wfy





2" Crayford focuser for Newtonian telescopes

This focuser offers best value for your money. It runs very smooth even under high load up to 2.5 kg.

Compared with simple rack & pinion focusers, the "Foc N2" is a really improvement.

Many amateur astronomers use this focser to retrofit their telescopes.

Mounting to the OTA:

The focuser comes with a versatile four-hole mounting plate. The horizontal bore distance is 70mm, the vertical bore distance is 72mm.

Scope of delivery:
-- 2" Crayford focuser with universal adapter plate
-- 2" - 1.25" reducer with brass clamping ring
TS 2" crayford focuser adjustment screws   

Adjusting the focuser's tension:

The knurled screw on the eyepiece side adjusts for the focuser's tension. The heavier the load is, the stronger this screw has to be engaged in order to prevent the focuser from slipping.

Fixing the position:

Astro photographers will like this feature. When the knurled screw on the telescope side is tightened, the focusing mechanism is disengaged and the drawtube is locked; thus preventing the focuser from unintended moving.

Technical details:
Weight::ca. 450 g
min. heigth:71mm from the base up to the 2" receptacle
Travel:35mm - this is, compared with other focusers, more than standard
Travel per revolution:14mm per 360°. So 10° give ca. 0.38mm travel.
Base:Formed for tubes >170mm outer diameter with bar for flat planes.
Equipment:Locking mechanism, tension adjustment, Reducer 2" - 1.25" with 2" filter thread

Wfy

 
   
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