After my last night runaway mount experience, I changed both RA & DEC cables and did 10x10min in Ha on the Helix. Pretty faint, so I couldn't see it and point to it in the finder, and with my legendary polar alignment and goto accuracy it only took me about 1h to find it
. Tracking was good so tomorrow night I'm going to load the hyperstar with the C11 and shoot the same thing. Now I'm confident I'm not going to break anything. FOV should be similar, maybe a bit bigger but I suspect I'm going to be doing 30s to 1min subs and go to bed waaay earlier than tonight. Will be a good comparison test.
There's a full field here if anyone's interested:
http://www.multiweb.com.au/astro/NGC7293_ha_f.jpg
Pretty boring grey donut without colors
