Andromeda Revisited

A revisit to the great Andromeda spiral galaxy on thursday took another 40 minutes worth of images including some 5 minute guided. About 60 minutes worth of darks subtracted aswell. Have had a play withe the processing to get a more pleasing colour. I dont think there was enough detail on shorter exposures on the previous image. Now i think it has become a great deal smoother. I do have a stock of flats and bias frames, so I may be back with another. I do have a few issues with coma however so I have cropped as best I can Let me know what you think.





Object: The Great Andromeda Galaxy
Type: Galaxy
Constellation: Andromeda
Date: 24th - 25th September 09 11.40 01.40am
Equipment: William Optics Megrez 90 Canon EOS 40D guided using 66mm William Optics refractor & Atik 16IC camera.
Subframes: 15 x 1 minute exposures at ISO1600, 4 x 5 minute ISO 1600 and 8 x 2 minute exposures approx 60 mins of darks subtracted
Stacked: by Deep Sky Stacker.
Processed: In Images Plus 3.75 with a DDP stretch.

M27 The Dumbell Nebula

Object: Dumbbell Nebula M27
Type: Planetary Nebula
Constellation: Velpecula
Date: 30 May 09 01.30am
Equipment: William Optics Megrez 90 Canon EOS 40D guided usin 66mm William Optics refractor & Atik 16IC camera.
Subframes: 1 x 8 minute exposures at ISO800, 1 x 8 minute dark, Bias & light frame calibrated
Stacked: by Deep Sky Stacker.
Processed: In Images Plus 3.75 with a DDP stretch.

Notes: This is the first opportunity to guide using my new Atik 16IC camera. I was able to guide using what I estimate to be a 9th Mag star. I am seeing a much better signal to noiseratio by generating a longer exposure rather than 16 x 30 seconds. I look foward to future tests.