M42 Orion Nebula, NGC 1973/1975/1977 Running Man Nebula

Taken near Steven's Creek Reservoir, CA

 

Canon EOS 6D unmodified

Orion 80mm f/7.5 600mm

Field Flattener

Orion SSAG + 50mm f/2.3 162mm

ZEQ25

No Dithering

ISO 100

 

7x 5' Lights

12x 5' Darks

23x 1/4" Flats

20x 1/4" Flat Darks

No Bias

 

Pixinsight

PI Stacking + Linear Defect Detection and Subtraction

Dynamic Crop

Fast Rotation

Dynamic Background Extraction

Photometric Color Calibration

SCNR

Multiscale Linear Transform w/ luminance mask

Histogram Transformation

ACDNR

Histogram Transformation

Histogram Transformation w/ range mask

Local Histogram Equalization w/ range mask, outer nebula

Local Histogram Equalization w/ range mask, inner nebula

HDR Multiscale Transform

Curves Transformation

Dynamic Crop

Done