50x300 Ha
35x300 O3
ASI 1600 - gain 180, 40 offset, 40 USB speed.
Processed with DSS and Star tools
(total processing time 95 minutes on
[email protected] ghz, 16GB@2933MHz, 512GB 960evo NVME drive). Taken backyard Saline MI (red to north and east, orange to W, yellow to south. Average 20.7 Brightness)
DSS -
30 darks (checked for same bg level)
16 flats - 30s 20000ADU
16 dark flats
KSC for all 2.5sigma, 5 iterations, no b/g calibration, remove hot pixels. Bicubic alignment.
No dithering/drizzle
Startools: Synthetic Lum
Layer-blend Ha-b/g + O3 f/g 40% blend
Crop 24,24,48,24
Wipe - gradient 80% strength, 3 pixel dark filter
Dev - 96.5%; sky b/g 5%; dark filter 16
Mask-autostar detail size 12, 90% bright threshold, 3 strength. Invert-save.
Deconvolution- 2pixels radius
Sharp- large
Contrast- comp gamma-Y, dark filter 3pix
HDR- reveal all, str 1.2, size 512pix
Mask - set full
Denoise- DWOR 8. Smooth 75, scale 90,90,90,90,50, bright detail loss 12%, color detail 0%.
Save Lum
Ha and O3 (R+B) layers
Crop
Bin50%
Wipe- gradient 3 pixel 80% str
Dev- ha 95%, O3 97.5%, sky b/g 5%, 8 pixels
Denoise - DWOR 8, smooth 75, 90,90,90,90,50, scale 3, bright detail loss 33%, color detail loss 0.
Save Ha\O3
LRGB composite
L, R, B, calc missing-Y, cap green, blue weight 1.56
Wipe gradient 80%, 3 pix
Color- CEILab, red reduce 1.1, blue reduce 1.17, cap green.
Denoise- DWOR 8, smooth 75%, 90,90,90,90,50, bright detail loss 5%, color detail loss 20%, scale 3.
Reload mask - invert.
Magic- reduce 1 pix.
Save -> Final composite
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