M31 (Andromeda Galaxy) - 15 September 2020
A stack of 97 photographs taken through a Celestron RASA 11 (279 mm aperture at F/2.2) with a Nikon D810A DSLR set to ISO 6400.
The exposure times were:
17 x 5 seconds, 16 x 10 seconds, 16 x 15 seconds,
16 x 20 seconds, 16 x 25 seconds and 16 x 30 seconds.
Click on image to see a larger version (about 4.1 Megabytes).
A stack of 97 photographs taken through a Celestron RASA 11 (279 mm aperture at F/2.2) with a Nikon D810A DSLR set to ISO 6400.
The exposure times were:
17 x 5 seconds, 16 x 10 seconds, 16 x 15 seconds,
16 x 20 seconds, 16 x 25 seconds and 16 x 30 seconds.
Click on image to see a larger version (about 4.1 Megabytes).
