M1-RGB-Ha-OIII

Object: M1 Crab Nebula.

Optic: CA300 (300/1200mm Newton f4), GPU Corrector.

Mount: Skywatcher EQ8.

Camera: ZWO ASI 1600MM-C @ -20°C, Gain 75, Offset 15.

Filter: ZWO EFW 7x36mm, Baader 36mm Filter.

Exposure: total 5.2h, Ha 33x4min, OIII 34x4min, R 7x2min, G 7x2min, B 7x2min.

327xBias, 48x Darks(2min:4min), 31x Flat(Ha:OIII), 25x Flat (R:G:B).

Color: Ha-OIII,RGB .

Capture: SGP (Sequencing, Autofocus, Dithering, FlatWizard).

Guiding: TS-OAG 9mm, ASI120MM, PHD2.

Date/Location: 2018-02-14, Zirndorf.

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Image Processing:.

Pixinsight:.

ImageCalibration, CosmeticCorrection, StarAlignment, Blink, ImageIntegration, .

BatchPreprocessingScript (for RGB), ChannelCombination, DBE, PhotometricColorCalibration,.

STF for OIII, HT-Stretch for RGB, StarMask.

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ST: DDP for Ha, Magic.

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PS:.

NIK Difine2 for RGB, ColorBalance, maskedMinimumfilter, Dynamic, Levels, Blend of masked NB-Channels.

matching visual spectrum according to Debra Ceravolo: Curves, Levels and GradientMap as clipping mask, .

Ha as LuminanceLayer, Dynamic, color Stars in Nebula, masked HighPassSharping

Done