M31 Andromeda galaxy

Camera: Nikon D3x

Optics: 80-400mm f4.5-5.6 set at 400mm f6.3

Mount: NEQ6Pro

Guiding: LVI 2 SmartGuider

 

DeepSkyStacker settings:

 

Stacking mode: Custom Rectangle

Alignment method: Bicubic

Drizzle x2 enabled

Stacking step 36 frames (ISO: 1600) - total exposure: 18 mn 0 s

 

RGB Channels Background Calibration: Yes

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Offset: 108 frames exposure: 1/8000 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Dark: 40 frames exposure: 30 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Flat: 40 frames exposure: 1/40 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Post-processing in PixInsight 1.7

 

Masked Semi-HDR technique, also used an exposure of 1 minute as a mask to improve the structures (blowing the core)

 

New effort:

www.flickr.com/photos/14721988@N02/8075286391/in/photostr...

Done