TeSeek Large Aperture Version/Universal Aperture Version 2-inch SCT Telescope Focuser Dual-speed Toothed Focuser

Description

Differences:
- 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.

Specifications:
- 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:
- No obstruction design: Adopting a unique structural design, the entire focusing barrel is controlled to a small length, ensuring no obstruction for both visual and photographic purposes. It is the market's shortest focusing barrel and longest focusing stroke focuser, with a 55.5mm stroke shorter than some 35mm stroke focusing barrels.
- Long stroke design: Maximize the focusing stroke without obstruction, with a focusing stroke of 55.5mm and a total rack length of 56mm, achieving a utilization rate of 99%. It can meet almost all visual observation and photography needs, including the focusing stroke requirements of Denk multiplier and binocular.
- Super rigid design: adopting a unique hidden 16-bearing 16-point support method [not ordinary 16 bearing 8-point support], the support force for the focusing cylinder is more uniform, with less deformation, greatly improving stability. It is also the most important secret to achieve ultra long focusing travel with an ultra short focusing barrel.
- Super stability design: 16 surround support points, even if a few points become loose due to various uncertain factors, it will not affect the stability of the support, making it suitable for long-term remote station duty.
- Anti leakage design: solves the problem of light leakage to the greatest extent possible, avoiding the impact on long-term exposure deep space photography.
- High precision clamping locking ring design: can provide strong and uniform locking force, more stable than coaxial locking, not easy to loosen, especially suitable for long-term remote station duty.

Note:
- The 2-inch to 1.25-inch adapter is not included.
- After the screw is screwed onto the telescope, the focusing barrel of the large aperture version will be exposed about four or five millimeters, while the universal aperture version will not be affected.

Package Included:
- 1 x Focuser