Added twice as many frames as normal – still noisy. Probably need longer exposures. Bad gradients needed a lot of work in APP.
UPDATE: Used the demo versions of TOPAZ DeNoiseAI and it makes a huge difference. Removes noise without removing details. Other de-noising seems to just blur features – this is far more intelligent.
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 |