Daily Archives: November 13, 2022

Arp319 at 9 hours 56 minutes

The 9 hour rule in Astrophotography

I am testing to see if what is said about 9 hours being minimal time for a truly deep sky image. Collecting 9 hours in Syracuse is at least a 3 night proposition but I was able to keep just for minutes shy of 10 hours for this image. There is a definite improvement over the 6.5 hour image in brightness of the galaxies and smoothness in the background. Here is the final image and links to the previous images. The differences are subtle. At a quick glance, I don’t really see much difference in the three pictures. But when […]