Orion nebula

Once or twice a year I hope to be able to get a reasonable shot of M42, the great nebula in Orion. Here's last night's effort, assembled from 20 1 minute frames. I also took 20 equivalent dark frames to eliminate pixel noise, and they seem to have worked quite well. I did the processing in Nebulosity, a very nice astronomy image-acquisition and processing package.


What I've learned from this is that I still need to go to shorter exposures not to wash out the central core. Also, examining this...