It’s about a total 3 hr exposure with a 11in CPC1100, using a canon 60d (iso 2500). 30s exposures, throwing away bad exposures (about 60 %) to yield this using deepskystacker (using about 50 dark frames). The arrow indicates the supernova.
Supernova in M101, August 25th 2011, about a 3 hr exposure with an 11in scope and 2500 iso on a canon D60.
Clearly an improvement of the first attempt which only included about 12 minutes of ‘sky time.’
Right, now back off to the pass to do the same thing again tonight! Me= CRAZY! :-p
-All images available under creative commons license, attribution Thunderf00t 🙂
Thunderf00t 