Fitting a prism into a diagonal

[ismangil]

Polling for ideas, how can I fit a prism into what was previously a mirror diagonal?

The prism doesn't have a flat back, so I can't simply glue it to the back plate.

Perry

[Merlin66]

Not sure why you would want to do it...

The prism you show is for a 1.25 body and your "donor" diagonal is a 2"....

You'd need to apply some yankee ingenuity and fit spacers to the back plate to hold the prism square and central. Maybe a couple of pieces of shaped customwood??

[ismangil]

I did try a 1.25" diagonal actually, it doesn't fit.

The original spec did say it needs 54mm tube:

I agree, probably some kind of 'channel' holding the sides with the back glued to the back plate.

Perry