Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1795  ·  LBN 645  ·  LBN 646  ·  LBN 647  ·  LBN 648  ·  LDN 1359  ·  LDN 1361  ·  NGC 896
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Fish Head Nebula (NGC 896) in Narrowband, Frank Kane
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Fish Head Nebula (NGC 896) in Narrowband

Getting plate-solving status, please wait...
Fish Head Nebula (NGC 896) in Narrowband, Frank Kane
Powered byPixInsight

Fish Head Nebula (NGC 896) in Narrowband

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Description

One of my longest exposures and toughest processing challenges - replacing the magenta SHO stars in this image with RGB stars was really tricky. I ended up using StarNet to create a star-less version, and then used a complex PixelMath expression to blend the star-less narrowband image with the RGB image using a star mask, selecting the most luminous pixel from the NB or RGB images within the mask - using luminance channels extracted from each. Phew.

This is also my first time using the new WeightedBatchPreProcessing script for PixInsight, which is amazing.

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Fish Head Nebula (NGC 896) in Narrowband, Frank Kane