The Off-Axis Guider have Large prism, it greatly increased the area of OAG prism guide star
compatible with 183, 174 CCD cameras
improved: up to 1500mm primary telescope for OAG guiding that can be faster at finding and Easy-Guider the area is the 6-7 times of the QHY5L-II-M guide camera

Specification:
Input: M48, M54, with 360 degree rotatable helical
Output: M54, M48, M42, with 360 degree rotatable helical
Guider Connection adapter: 1.25" helical focuser
Thickness: 26mm
Only the above package content, other products are not included.
Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.