Monday, March 3, 2025

Seagull nebula

29 x 5 minute exposures of the Seagull nebula, captured with AstroDMx Capture through a William Optics 81 mm ED APO refractor with an Altair Hypercam 533C 14 bit OSC CMOS camera with an Altair quadband filter. Stretched with unlinked channels and linked channels.

The data were debayered, calibrated, stacked and SpectroPhotometric Color Corrected and stars removed in PixInsight plus Hubble palette from OSC image; post processed in the Gimp 2.10, Background extraction, initial denoising and stretching in GraXpert and SetiAstro's Cosmic Clarity for sharpening and final denoising.

Click on an image to get a closer view

AstroDMx Capture capturing RAW data

The Seagull nebula

SHO rendering


Linked channels


Unlinked channels


Blend of linked and unlinked channels


Steve Wainwright and Nicola Mackin

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