Good evening.
This is my first processed Pixinsight.
I have serious problems to eliminate background noise.
Processing steps:
1-Dynamic Background extraction.
2-Background calibration.
3-Color calibration.
4-Multiscale four-Noise Reduction (ATW).
5-Masked stretch.
6-Morphological transformation (star size reduction).
7-Exponential transformation (with ATWT and PixelMath)
8-ACDNR.
9-SCNR.
10-Curves transformation.

Image original:
http://www.meteogredos.com/M45_4_1.pngOptics: TS100Q 4" f/5.8
Camera: Canon 6D not modified.
Guider: QHY5M II
Mount: EQ6 pro II
Exposure: RGB 48 x600.
Total integration time: 8hrs.
Captured ATP
Processed in Pixinsight
Shot from Sierra de Gredos/Spain, November/December 2015
Clear skies!
Stargate