Cocoon nebula

Tags: 2019-08-30 dso astrophotography rgb nebula cocoon
Acquisition date(s):
2019-08-26
Description
One of the two images I did with my new QHY178M camera, when I didn't manage to start imaging some exoplanet or do some EAA, so as a result I just imaged random targets, other being NGC7331. Ideally, for a good picture, I'd want 4 more times integration that I have gotten here, but this will do. I quite like how it's "in your face". I also had some increadible guiding, especially for EQ6- whole night it was bouncing from 0.4-0.5" RMS. Just crazy good stability.

Equipment/Acquisition Details:

Imaging Scope: SkyWatcher Explorer 250PDS 1200mm F5 newtonian reflector

Imaging Camera: QHY178M

Filter Wheel: Starlight Xpress Mini Filter Wheel w/ Integrated OAG

Filters: 1.25" mounted Baader RGB filters

Guide Camera: Lodestar X2

Mount: SkyWatcher NEQ6 with wedge upgrade, hypertuned

Accessories/Software: QHY Polemaster, EQMOD, PHD2, Sequence Generator Pro, Pixinsight, Paracorr v1

Integration Details: L 1x1 31x120s, Red 1x1 29x120s, Green 1x1 29x120s, Blue 1x1 56x120s  TOTAL: 5.1 hours.

Dates: 2019-08-26

Darks: 30

Flats: 30

Bias: 150

Processing details:

Processing each master LRGB

Crop
DBE

RGB

ChannelCombination R + G + B
BackgroundNeutralization
ColorCalibration
SCNR green
MMT using 6 layers with adaptive setting and inverted luminance mask
HistogramTransformation to taste
ACDNR to reduce chrominance noise

L

MMT using 6 layers with adaptive setting and inverted luminance mask
HistogramTransformation

LRGB

LRGBCombination
ACDNR to reduce chrominance noise
Curves Transformation for contrast and saturation
ABE to get rid of gradient
SCNR green
ACDNR for overall very slight noise reduction
LocalHistogramEqualization
DarkStructureEnhance
ICCProfileTransformation assign sRGB profile
Signature script