Author Topic: m8 lagoon nebula  (Read 303 times)

Offline mmnb

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m8 lagoon nebula
« on: 2019 August 14 17:04:08 »
C14+hyperstar+ EOS 60Da
20x30s

Found my darks before I thought I could get a hold of them and indeed including them in the calibration (as recommended here: https://pixinsight.com/forum/index.php?topic=11968 by bulrichl) really did seem to make the thin dark lines disappear (that wasn't going away, despite dithering). I'll try to post some controlled comparisons on that since there seems to be some varying advice o how to deal with Canon dark current suppression.

Nothing fancy:
Up to PCC
Deconvolution (still hard to see the effects here, very easy to overdo)
Denoising dark
Sharpening nebulosity
Star shrinking (while linear, very light)
arcsinh stretch (I liked this stretch better than the masked stretch as I seemed to be getting smaller stars and better color although the outer nebulosity was dimmer)
HDMRT (no mask, brought out the internal dark areas to look more like masked stretch)
Small L and Sat curve adjustment.

Lots of nice images out there but it seems to be in the right ballpark but would love to hear any criticism.

XISF up to PCC: https://drive.google.com/open?id=1_iyvukiNlpD-Dj2xKsGIivsykwnD13vl

Offline mmnb

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Re: m8 lagoon nebula
« Reply #1 on: 2019 August 14 18:04:49 »
Increased saturation a little.
EDIT: Added exp stretch to brighten a bit.
« Last Edit: 2019 August 15 00:32:37 by mmnb »