The Elephant trunk nebula through A William Optics 81mm APO refractor with an Altair Quadband filter and an Altair Hypercam 533C OSC 14 bit CMOS camera. 10 x 5 minute RAW exposures captured with AstroDMx Capture. Calibrated, debayered and stacked in PixInsight with SPCC; further processing in Gimp, starnet++, GraXpert and Cosmic Clarity at the command line.
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The Elephant trunk nebula RGB
HOO rendering
Steve Wainwright and Nicola Mackin
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