Kasai’s premium rack & pinion focuser.
- M68.8/P0.75 male at the objective lens side
- M57/P0.75 female at the camera side
- 1:10 reduction ratio
- 33mm focus travel
- Suggested payload capacity : up to 5kg
- Focuser weight : 735g
- Drawtube ID : 51mm
- 7801 is required for Series 80 tubes.
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