Εστιαστής Crayford για Schmidt Cassegrain

2" Schmidt Cassegrain Focuser with 1:10 micro trans2" Schmidt Cassegrain Focuser with 1:10 micro transmission and 1.25" reducer

The problem:
Focusing a Schmidt-Cassegrain is sometimes a problem becaus of the mirror shifting thus making sharp astro photos or critical observation tricky.

The solution:
Our SC-Focuser solves this problem. Due to theCrayford friction principle, it is absolutely free from shifting and offers very good craftmanship. It supports accessories up to ca. 4 kg.
mission and 1.25" reducer

The 1:10 micro transmission
Precise focusing is essential for successful astro photography. One revolution of the micro focuser knob moves the drawtube by 1.4mm. A twist of 10° gives only 0.038mm travel - that's precise enough even for critical applications.

The 360° rotation
Orientate your star diagonal or camera without loosenig locking screws. Search for a guide star with an Off-Axis-Guider without touching the camera. Just turn the knurled knob on the telescope side of the focuser and you can rotate the whole focuser with its accessories.

The drawtube locking mechanism
It disengages the focusing mechanism and holds the drawtube in place firmly. This is essential for astro photography.

Travel
The focuser's travel is ca. 25mm - this is more than enough. Coarse focusing is done with the telescope's main mirror - fine tuning is performed afterwards with the TS Crayford.
Weight app. 700g
Focuser height from SCT connection to 2" access: 90mm

1.25" Reducer
A reducer from 2 to 1.25" with brass clamping ring and 2" filter thread is included.