Continuing to reprocess old data since I’ve realized my processing skills were shit back when I originally shot this galaxy in 2019. I’m a lot happier with the more natural colors and better noise reduction on this one. Captured on April 22nd and 23rd, 2019 from a bortle 7 zone.
duplicated each image and removed stars via StarXterminator. Ran DBE with a shitload of points to generate background model. model subtracted from original pic using the following PixelMath (math courtesy of /u/jimmythechicken1)
$T * med(model) / model
Luminance Linear:
BlurXTerminator
ArcsinhStretch + HT to stretch nonlinear
RGB Linear:
ChannelCombination to combine monochrome Red Green and Blue stacks into color RGB image
SpectroPhotometricColorCalibration
BlurXTerminator
DeepSNR
HSV Repair
ArcsinhStretch + HT to stretch nonlinear
NonLinear:
LRGBCombination to add stretched L as a luminance layer to RGB
Several Curve transformations to adjust lightness, contrast, saturation, hues, etc with various masks
DeepSNR again
MLT for large scale chrominance noise reduction
More Curves
Invert > SCNR green > Invert to remove some magentas from stars
Continuing to reprocess old data since I’ve realized my processing skills were shit back when I originally shot this galaxy in 2019. I’m a lot happier with the more natural colors and better noise reduction on this one. Captured on April 22nd and 23rd, 2019 from a bortle 7 zone.
Places where I host my other images:
Flickr | Instagram |
Equipment:
TPO 6" F/4 Imaging Newtonian
Orion Sirius EQ-G
ZWO ASI1600MM-Pro
Skywatcher Quattro Coma Corrector
ZWO EFW 8x1.25"/31mm
Astronomik LRGB+CLS Filters- 31mm
Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm
Agena 50mm Deluxe Straight-Through Guide Scope
ZWO ASI-290mc for guiding
Moonlite Autofocuser
Acquisition: 2 hour 47 minutes (Camera at Unity Gain, -20°C)
CLS- 52x120"
Red- 21x60"
Green- 21x60"
Blue- 21x60"
Darks- 30
Flats- 30 per filter
Capture Software:
PixInsight Processing:
BatchPreProcessing
SubframeSelector
StarAlignment
Blink
ImageIntegration
Linear:
DynamicCrop
DynamicBackgroundExtraction 2x
Luminance Linear:
BlurXTerminator
ArcsinhStretch + HT to stretch nonlinear
RGB Linear:
ChannelCombination to combine monochrome Red Green and Blue stacks into color RGB image
SpectroPhotometricColorCalibration
BlurXTerminator
DeepSNR
HSV Repair
ArcsinhStretch + HT to stretch nonlinear
NonLinear:
LRGBCombination to add stretched L as a luminance layer to RGB
Several Curve transformations to adjust lightness, contrast, saturation, hues, etc with various masks
DeepSNR again
MLT for large scale chrominance noise reduction
More Curves
Invert > SCNR green > Invert to remove some magentas from stars
LocalHistogramEqualization
even more curves
DynamicCrop
Annotation