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Ghost Nebula, 


            Kevin Morefield
Ghost Nebula

Ghost Nebula

Technical card

Imaging telescope or lens:Planewave CDK14

Imaging camera:SBIG STX 16803

Mount:Paramount ME II

Guiding telescope or lens:Planewave CDK14

Guiding camera:SBIG STX 16803

Software:Adobe Photoship CCPixInsight

Filter:Baader 50mm H7,O8,S8 and LRGB

Resolution: 3650x2958

Dates:Aug. 20, 2017

Frames: 145x600"

Integration: 24.2 hours

Avg. Moon age: 28.14 days

Avg. Moon phase: 2.17% job: 1713849

RA center: 319.007 degrees

DEC center: 68.208 degrees

Pixel scale: 0.728 arcsec/pixel

Orientation: 179.161 degrees

Field radius: 0.475 degrees

Locations: Sierra Remote Observatory, Auberry, California, United States

Data source: Own remote observatory

Remote source: Sierra Remote Observatories


This is a humbling project. I think the ghost can really separate the skilled processors from those still learning the craft. I've seen others I like much better but time to move on!

I'm trying different methods to tame color noise. I was very pleased with the Synth luminance that resulted from blending all of the data in PI but taming the color noise was a challenge. I started with heavy de-noising the RGB prior to adding Luminance. Then after PI I used Topaz de-noise, mostly in the shadows.

Would love to hear workflows and tricks for handling color noise if you have any.

39 Luminance, 30 Red, 26 Green, and 50 Blue each 10 minutes for a total of 24 hours integration time.



Kevin Morefield
License: None (All rights reserved)

Sky plot

Sky plot


Ghost Nebula, 


            Kevin Morefield