Elephant Trunk Nebula (in modified CFH/SHO palette) (David McClain)

Elephant Trunk Nebula (in modified CFH/SHO palette)

Raw frames courtesy of Deep Sky West Remote Observatory in New Mexico, USA. (deepskywest.com) Data obtained with FSQ 106EDXiii / QSI683wsg / Lodestar / Paramount MyT.

Approx 25 hrs total integration (16x1800s O-III, 18x1800s S-II, and 16x1800s H-alpha). The palette is CFH with R = H-alpha, G = O-III, and B = S-II, but I have limited the growth of magenta in the image, using the same tool used in Hubble palette images to remove magenta halos from the stars. Then I removed excess green with SCNR Average Green.

So many great pics of this nebula, I wanted to present something slightly different.

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Not sure why the JPEG comes out showing so dark here. So I lightened it up for another try. It is really much brighter in FITS form on my screen. Eh?

______

Try again, without removing the green. Maybe looks better?

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Get rid of the cyan halos on the stars, just like we remove magenta halos in Hubble palette images. Still can't figure out why it looks so much darker here than in my processing.

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Revisions tones down the color map a bit, and uses H-alpha as a Luminance channel

Original
B
C
D
Final
E

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Unknown

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Status	Basic failed
Started	...
Astrometry.net job	1057429
PixInsight job	n/a
PixInsight queue size	n/a
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