M27-Ha-OIII-RGB.jpg
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M27-Ha-OIII-RGB.jpg
M27
Object:M27 Dumbbell Nebula
Optic: NON1000 (200/1000mm Newton f5), GPU Corrector
Mount: Skywatcher AZ-EQ6
Camera: ZWO ASI 1600MM-C @ -20°C, Gain 75, Offset 15
Filter: ZWO EFW 7x36mm, Baader 36mm Filter
Exposure: total 7h, Ha 43x4min, OIII 27x4min, R 23x2min, G 23x2min, B 23x2min
327xBias, 48x Darks(2min:4min), 31x Flat(Ha:OIII:L:R:G:B)
Color: Ha-OIII,RGB
Capture: SGP (Sequencing, Autofocus, Dithering, FlatWizard)
Guiding: TS-OAG 9mm, ASI120MM, PHD2
Date1/Location1: 2017-08-13, Zirndorf
Date2/Location2: 2017-08-14, Zirndorf
Date3/Location3: 2017-08-20, Austria
Date4/Location4: 2017-08-21, Austria
Image Processing:
Pixinsight:
BatchPreprocessingScript (calibrate only), CosmeticCorrection, StarAlignment, Blink,
ImageIntegration, ChannelCombination, DBE for RGB, PhotometricColorCalibration,
STF, MaskedStretch, HT-Stretch, HDRMultiscaleTransform for NB-Channels
PS:
StarRemoval for NB-Channels, Blend of NB-Channels matching visual spectrum according to Debra Ceravolo:
Curves and GradientMap as clipping mask, 2x ShadowsAndHighlights, HighPassSharping, MinimumFilter,
ColorBalance