As first I described on Friday, August 26, a type Ia supernova discovered on Wednesday, August 24, in the nearby galaxy M101 in Ursa Major is the nearest type Ia supernova astronomers have found since 1972. The brightness of this exploding star is on the rise and now shines at about 10th magnitude, presumably near maximum.
On Saturday, August 27, Tom Bash shot this fine portrait of M101 and its supernova at the Julian Starfest in Julian, California. He used a Celestron HD-11 on a CGEM-DX mount, an SBIG STL-1301E CCD camera with AO-L and Custom Scientific filters, and exposures of 30 minutes (clear filter) and 60 minutes of binned RGB (2x2).
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