QHY OAG-L Large Off-Axis Guider - M62 - 100075 Planispheres Sealed coating edges to prevent

Sealed coating edges to prevent incursion of air or moisture

Large diameter lens elements

since the QE response of a OSC sensor beyond 850 nm doesn't change much

you will have lots of magnification to examine those objects in detail

QHY OAG-L Large Off-Axis Guider - M62 - 100075 Planispheres Sealed coating edges to preventThe OAG L at a Glance: Prism Size: 8*8mm Telescope Interface: M62*0. 75 Thickness: 10 mm excluding 3mm adapter Compatible Filter Wheel: QHYCFW3L Compatible Imaging Cameras: Larger than Full Frame The QHY OAG L, aka the M62 "large" version of the QHY Off Axis Guider, is designed to be thin yet solid at just 10mm thick with a weight of 149g. Adding an M62 threaded adapter ring adds only 3mm for a total thickness of 13mm. There are six 3mm through holes