Not an uncommon target, but I had a little bit of time before my main target of the night was sufficiently high above the horizon. 6 x 5min R, G and B frames.
Continuing my exporation of the Atik 460 OSC, I connected a Canon 200mm f/2.8L lens ( I guess in telescope terms it would be a 72mm f/2.8 refractor!) to it last night, and had a go at shooting M31, M33 and M45 before the lens began to dew up and the clouds rolled in.
First off is M31, which is a stack of 23 x 3min exposures:
Next up was M33 in Triangulum, this time comprised of 25 x 3min subframes:
And finally the Pleiades, M45. This was put together from just 8 x 3min exposures, and condensation was beginning to build up on the lens, I think, which cused the stars to look a little fatter than usual:
Two more iconic objects taken with the Atik 460 OSC, but this time with a Sigma 150mm f/2.8 lens attached, as these objects are far too large to fit in the field of view of a 1000mm focal length telescope!!
M31, the Andromeda Galaxy, is a stack of 9 x 3min exposures:
And M45 is a stack of just 6 x 3min frames:
I was hoping to catch more of the nebulosity around the Pleiades, but not much of it was captured. In both images, the brighter stars are very bloated, and next time I’ll try putting a UV blocking filter into the path to see if that helps at all.
First up is the Dumbbell nebula, M27. This used the 105mm lens, and is a stack of 30 x 30 sec exposures at ISO 800.