QHY OAG-S Small Off-Axis Guider - M42 - 100073 Baader and are unequivocally easier to

and are unequivocally easier to share amongst a group of observers

the twist-lock cannot scratch or engrave the barrel of your eyepieces

Reduces vignetting–darkening around the edges of the image sensor–by providing unobstructed light to the camera

the use is easy

It is being offered here separately in case you need to replace yours

QHY OAG-S Small Off-Axis Guider - M42 - 100073 Baader and are unequivocally easier toThe OAG S at a Glance: Prism Size: 8*8mm Telescope Interface: M42*0. 75 Thickness: 10 mm excluding 3mm adapter Compatible Filter Wheel: QHYCFW3S Compatible Imaging Cameras: Less than 1" The QHY OAG S, aka the M42 "small" version of the QHY Off Axis Guider, is designed to be thin yet solid at just 10mm thick with a weight of 127g. Adding an M42 threaded adapter ring adds only 3mm for a total thickness of 13mm. There are six 3mm through holes in the OAG