SBIG STL's mount is limited for attachments. I made Mount60 which is very useful for connecting telescopes or camera lenses. The construction is simle and solid. The height of the 60mm & 55mm hole is adjusted for PENTAX back focus, 45.46mm. Nikon and Canon are different from this value.
Three screw holes are on sides for push male attachment.
The diameter of SBIG's PENTAX camera mount is 59.8mm, so 60mm mount can be inserted.
The diameter of BORG's 42mm-57mm adapter is also 59.8mm
This is most useful for all telescope attachment. My Flat Schmidt Camera has this 60mm taper male mount.
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