Shot with two cameras, Canon 90d for the RGB, and an ASI2600MC Pro with the L-Enhance Filter for the Ha. 300mm f2.8 Canon EF Lens. Preprocess methods using information from clarkvision.com for the Canon shots, then stacked in Siril using global star alignment and sigma clipping for both photo sets. Stars extracted from both, Photoshop for stretching and manual alignment. Using Siril to split the channels and pixel math to average the reds together, then using the green and blue channels from the Canon shot to composite. Canon stars added back in using Photoshop, stretched to taste. Shot from Sleeping Bear Dunes, high bortle 3 sky
Details:
Canon 90d: ISO 1600, 300mm f2.8, 20×180”
ASI2600MC Pro and L-enhance filter: Gain 100, 300mm f2.8, 6×600”
No calibration frames used
SVBONY 120mm guide scope, ASI120MM camera, 1” error guiding average, it was windy
ZWO AM3 mount.
It’s been a newer interest of mine to build HaRGB composites, it’s fun to look at the red dust in and surrounding objects where it’s faint in natural color shots. My favorite images are typically done with a DSLR and lens, the stars and esthetic really appeal to my eyes. But then seeing the Ha come into view after a 10 minute exposure looks incredible too, so here we are
by Kastlrock_ISO
1 Comment
Stunning.