AT8RC information

OK, I got a chance to focus the scope and now I can give an exact measurement for the focal distance.

If you have a ST2000xm with a FCW-9 filter wheel, then the distance from the flange where the focuser extension screws onto the scope to the face of the filter wheel is 226mm or 8 15/16".

If you need the distance from the flange to the CCD Chip, it is 270mm or approximately 10 5/8".

This was not the same distance that I was told before, 10" to 10.25" to the CCD chip. This is what I found with mine, whether they are all alike, I am not sure. But this should be very close.

Arrgghhhhh you are killing me Floyd lol.......I have been waiting for someone to post up some good info on this OTA and two have come and gone on here while I wait. Go take some pics already!

Floyd Blue said:

OK, I got a chance to focus the scope and now I can give an exact measurement for the focal distance.

If you have a ST2000xm with a FCW-9 filter wheel, then the distance from the flange where the focuser extension screws onto the scope to the face of the filter wheel is 226mm or 8 15/16".

If you need the distance from the flange to the CCD Chip, it is 270mm or approximately 10 5/8".

This was not the same distance that I was told before, 10" to 10.25" to the CCD chip. This is what I found with mine, whether they are all alike, I am not sure. But this should be very close.