Added twice as many frames as normal – still noisy. Probably need longer exposures. Bad gradients needed a lot of work in APP.

Object ID M101, NGC 4321
Details Spiral galaxy, Ursa Major
Mag. 9.5
Size 7.4’x6.3′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 20x180s each RGB
darks, flats, bias
Capture APT
Processing APP, Photoshop