A few weeks ago I started my longest deep sky image ever - with the goal being to make the extremely faint hydrogen cloud around the Pleiades star cluster visible.I took nearly 70 hours worth of images, using 3 different telescopes matching them with 3 different cameras to get identical fields of view, over multiple nights. It was an extremely challenging image to edit, as even with nearly 50 hours, the hydrogen stripes were barely visible. I am very happy with the outcome, though and so I plan to take more such photos
The Space Koala Astrophotography by Luca Bartek 
