Horsehead
and Flame in Orion - HaRGB
Click on the above image to see a 2x version.
The Horsehead (Barnard 33) and the Flame Nebula (ngc2024; bottom left)
in H-Alpha + RGB
Scope: AP155EDF w 4" Field Flattener and Focus Boss II motorized focuser
Camera: Moravian G4 w Astrodon Gen II filters
Mount: Paramount MX guided w an SBIG ST-402ME and Borg 60mm guidescope
8 x 20 min of H-Alpha
12/12/12 x 10 min each of RGB
Acquired with CCD-Commander and TheSkyX
Reduction and all pre-processing in PixInsight.
RGB processed in PixInsight using SPCC, BlurX, NoiseX then StarX,
HistogramTransformation, Curves, LHE then the stars were restored.
H-Alpha processed in PixInsight using BlurX, NoiseX, then
StarX followed by HistogramTransformation, Curves and
LocalHistogramTransformation (for contrast).
Starless H-Alpha was added to the Red and Blue channels in Photoshop
using Lighten blend mode and 100% and 20% respectively
Additional tweaks in Photoshop.
Click on the image to see it 2x this resolution and to resize it in the
browser.
Lucknow, Ontario
Feb 2024
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