Supernova photometry

Philip Masding

Hi Graeme, 

Have you tried Astrometrica? It’s free for 100 days then 25 euros. It models the star’s PSF I think. I have used it for the SN in M61 and NGC 4568. The latter is very much within the galaxy so background subtraction is important . Attached is a screen shot of the NGC4568 results.