Supernova update

Last weekend I had a chance to revisit the supernova in M51. I took a few photos before clouds obscured the view. Here is M51 with supernova marked by the arrow:

This is a very noisy image. It's a 5-minute exposure at f6.3 and 1600 ISO. I'm a little surprised that the supernova remains as bright as it is and that I recorded it this well in a single exposure through a 3-inch telescope.

I had planned to take several images and try stacking them, but I forgot to tighten the axis clamps on my mount, so this was the only picture that didn't have significant streiks for stars.

jg