M31 final

see www.flickr.com/photos/nebarnix/198303490/ for this image stacked with another 88 minutes of light!

 

Final version! Can't believe this was during the full moon as well. (be sure to view full size)

 

Andromeda and its companion galaxies

 

Camera: Pentax *IST DL

Lens: 135mm F2.8 at 2.8 (apeture ring froze on me!)

Exposure: 80 minutes (!)

Total normalized exposure (min at iso 100): 304min@iso100

Total normalized light (min at iso 100/f-ratio^2): 39min@iso100@f1

6x240 seconds@iso 200

24x120 seconds@iso 400

2x240 seconds@iso 800

ISO: 200, 400, 800

Hand Guided (no RA drive at all) with a 500mm F4.5 reflector on an EQ mount

Done