finderscope

[simon]

is it possible to fit a rightangle to a / my finderscope?

[John]

If you mean adapt the finderscope you have, well it's possible but a rather messy job as you have to cut the tube length of the finder down quite a lot (like a 30-40mm) and then fit some sort of 90 degree diagonal and re-fit the eyepiece. The diagonal uses up some of the light path you see so the tube needs to be shorter by a similar amount so that the eyepiece will still come to focus.

[E621Keith]

If you mean adapt the finderscope you have, well it's possible but a rather messy job as you have to cut the tube length of the finder down quite a lot (like a 30-40mm) and then fit some sort of 90 degree diagonal and re-fit the eyepiece. The diagonal uses up some of the light path you see so the tube needs to be shorter by a similar amount so that the eyepiece will still come to focus.

In short, it'd be easier to put a for sale ad on ABS to sell your existing finder, followed by a wanted ad to buy a right angle finder. The chances is it will cost you less than buying the necessary adapters, diagonals, and eyepieces.

[simon]

ok , great , thanks all.