(H-Alpha R)-GB Image : NGC7000 (North America Nebula)

Exposure and processing: Dark & flat calibration, Poisson sigma reject, H-Alpha & RGB combine, H-Alpha 1,5x weight,
high-pass Filter, levels, curves, noise reduction.

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H-Alpha 1,05x weight,
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Old version

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Copyright images and processing Gert Gottschalk.
Copyright Bilder und Verarbeitung Gert Gottschalk.

Email : drgert1@yahoo.com

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