Orion XT8 1" Mirror Spacer

thingiverse

I wanted to used my DSLR (cropped Sensor) with my 8" DOB telescope. Unfortunatly, there is not enough back focus to do this without modification. You'll need 6, M4 60mm long screws if you want the full 1 inch. Remove the mirror from your telesecope, removed the 6 screws holding onto the mirror (through the rubber clips). Insert spacers below, reinstall with new screws, and you're done. Note, you will see some aberations when you do this for visual obeservation, This is due to the geometry change. The Pictures come out clean however.