TeSeek Dual-speed 2-inch SCT Telescope Focuser + EAF Automatic Star Focuser Pro Kit

TeSeek Dual-speed 2-inch SCT Telescope Focuser + EAF Automatic Star Focuser Pro Kit

2-inch SCT Telescope:
Difference:
- The minimum length of the universal version is 94mm, which is suitable for C6 and above all series for Celestron, for BOSMA 150 and for BKMAK180 OTAW, etc. (Note: the C925 regular version can only be used with the universal version. Mirrors below 9-series have a smaller aperture at the end, and the universal version is already equivalent to full aperture.)
- The minimum length of the large aperture version is 90mm, suitable for C925HD, C11, C11HD, C14, C14HD.

Specification:
- Focusing stroke: 51mm (After screwing the large aperture version thread onto the telescope, the focusing barrel may be pushed to the telescope, and the focusing stroke will be shortened. The universal version will not be affected.)
- Weight: 881g for universal version; 908g for large aperture version
- Universal version minimum height: 94mm when paired with a black 2-inch adapter, 83mm when paired with a 54-48 external thread adapter ring.
- Large aperture version minimum height: 90mm when paired with a black 2-inch adapter, and 83mm when paired with a 54-48 external thread adapter ring.
- The optimal back intercept length of the focuser extension = telescope back intercept - shortest height of the focuser + depth of the thread on the telescope when the focuser is screwed in - camera back intercept - back intercept of various accessories (optical path length)

Features:
- Almost no light leakage: provide a great guarantee for deep space photography.
- High interface precision: with standard new concept locking ring, there is no need to worry about coaxiality, untight locking or warping after locking.
- Quick-release two-speed components: You can quickly disassemble and assemble the two-speed components without disassembling the entire focuser to adjust the desired feel.
- Super large hand-wheels: the diameter of the coarse adjustment wheel reaches 38mm/1.5", and the diameter of the fine adjustment wheel is 28mm/1.1", which reduces the slippery feeling of hand twisting.
- 360-degree rotation: convenient for photographic composition and visual inspection. (Try to fix the angle so as not to affect the focal plane and balance of the optical axis, especially after adding electronic focuser.)

Note:
- There is a slight object drift when rotating forward and reversed.
- The 2-inch to 1.25-inch adapter is not included.

EAF Automatic Star Focuser Pro:
Description:
- Supports for Ascom and indi protocols.
- 5V power supply, only requires USB interface data cable to connect to the computer, wiring and power supply is simple.
- Supports for Ascom and Indi. Automatic focusing can be achieved in NINA, MDL, Sharpcap, or kstars. If the aforementioned astronomical software is not required, there are also specially developed control software that can easily control the focusing device through a computer.
- Specially customized 35 high torque stepper motor, which is more segmented than EAF's motor, with 3840 steps per turn, high segmentation, and more steps in the focusing area.

About air travel (also known as backlash):
- Air travel is mainly generated by the mechanical structure of the focusing seat, and the air travel brought in by the focusing device itself can be ignored. Air travel exists as long as it is a mechanical device, and it only needs to be offset in the software, which does not represent the performance of the focusing device.

Package Included:
- 1 x 2-inch SCT Telescope Focuser
- 1 x EAF Automatic Star Focuser Pro
- 1 x Handle
- 1 x Temperature Controller
- 1 x Accessory Pack