It's Helix nebula season again. I really wanted the outer loops but only got one side. The other side must be very faint! Star shapes are a bit elongated due to me keeping too many trailed subs. I couldn't bring myself to throw that many out.
GSO 10" F4 Newtonian, full spectrum Canon 1100D, Baader Semi-apo filter, 607 x 1 minute subs or 10.1 hours, HEQ5-Pro unguided.
Warty Astrobin version --->
http://astrob.in/304996/0/