Saturday, July 30, 2011

SN2011dh

Never mind the grainy picture-loads of lights, including the chihuahua beacon aimed as ever at my scope. This picture is meant to show the relative brightness of our old friend supernova 2011dh. In this post, it was clearly brighter that nearby mag. 13.85 USNO J1330149+471027 (to the left of the supernova; it is a faint star of unknown distance within our own galaxy), and it held that brightness for a few weeks. That plateau of brightness is what defines this as a Type IIp supernova-p for plateau-nothing too fancy there. Now, it is declining, and is probably no more than mag. 14.5 or so. Within 6-12 months, it should be well below the reach of a scope the size of mine.

No comments:

Post a Comment