June 2011: Supernova SN2011dh in M51!

On June 3, astronomers discovered a brilliant supernova in M51. This is the kind of spectacular target to image, due to M51 extraordinary beauty. I must admit that I didn’t know about the supernova existence when I imaged M51 by routine. When I processed the images, I compared them with professional pictures, to identify some of the features of the galaxy. I was stuck when I “discovered” a new star, around magnitude 13. I run to my computer and connected to the internet! Yes! Got it!

This image is an LRGB one. As I was testing, unaware of the supernova, it only contains 2 ten-minute subs through each filter, so the result is noisy, despite the 80-minute total exposure, and has some disturbing gradients (well, it’s time for me to begin┬átaking flats!). Imaged with the QSI583WSG, guided with the DSI.

Go to this object description and this image technical detail.