I just finished my first EAA session using a C6 on an Evolution mount, .63FR and an ASI294MC (not Pro) camera. I found that clearance is a problem (I have 105mm backfocus which works great) with viewing objects more than 55-60 degrees in elevation.
I understand that using an equatorial mount would be best, but my AVX and ASI533MC Pro are usually busy imaging on those few nights here in the Pacific NW that we have clear skies this time of year. It would be great if I could use the C6/EVO combination as my AVX is busy imaging.
I was wondering if I could effectively use a 2" diagonal with my EVO/294/FR combination, which would give me the clearance I need. Are there any downsides and, most importantly, I was wondering how much back focus the 2" diagonal adds to the image train (need to get t 105mm). I have searched the EAA forum but could not find the information I need.
Thanks in advance.
Edited by donsinger, 25 October 2020 - 11:28 PM.