0.85 Focal Reducer

[robindurant]

I have a Williams Megrez 102mm Telescope and using a DSLR have a problem fitting in a frame of objects such as Andromeda. Is the a Focal Reducer on the market of say 0.85 suitable for this set up without having to pay the earth for it.

Robin

[alan potts]

I am not sure but the Andromeda Galaxy may be too large to fit into even this frame but I am not sure, I know my 115mm F 7 has not got a large enough FOV. I think to get this in frame you need at least 4 and a half degrees. I may be wrong.

Alan.

[E621Keith]

You may get more respond if you post this question in the imaging or camera section rather than the eyepiece section.

You can use this FOV calculator to estimate the object size in your camera.

http://www.12dstring.me.uk/fov.htm