Andromeda Galaxy (M31)
Andromeda
This is "first light" with my new Pentax 100 SDUF II refractor. The scope has a 400mm focal length at f/4, and the camera is an STL-11000. LRGB exposure for this image was 27-10-10-15, with 60s luminance images at full resolution, and 30s colour images binned 2x2.
There was more data, but as soon as the moon rose I noticed a significant gradient in the images that overtook the galaxy.
STL-11000M,Pentax 400mm f/4 SDUF II