This orion oag was setup for a QHY9 and qhy5 guider. The guider section can rotate about 120 degrees around axis once installed to aid in finding a star.
The quider needs to have an M42 connector so if you have a qhy5 you unscrew the 1.25" nose and then just screw it right on to the oag.
These oag's normally slop about a lot as they have an outer and inner ring. I added some milar sheet between the inner and outer rings to remove most of the slop, but not all. But it's far better than a standard one.
It's well used and abused, definitely not pristine but it's under half price of new.
