M31 and C2011 L4 (PANSTARRS) on 2th of april 2013

After some tries with DeepSkyStacker I managed to get this image with some post-processing in PixInsight.

 

Camera: Nikon D3x

Optics: Nikon 80-400mm 1:4.5-5.6D VR set on 300mm f5.6

Mount: AstroTrac TT320

 

DeepSkyStacker settings:

 

Stacking mode: Intersection

Alignment method: Bicubic

Comet processing : Align on stars (no specific processing)

Stacking step 17 frames (ISO: 1600) - total exposure: 8 mn 30 s

RGB Channels Background Calibration: Yes

Per Channel Background Calibration: No

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

 

Offset: 108 frames exposure: 1/8000 s

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

 

Dark: 50 frames exposure: 30 s

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

 

Flat: 28 frames exposure: 1/200 s

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

Done