Captured 2026-5-01. After doing a widefield on M101 on 2026-4-30 with my new RedCat 51, I wanted to see, how M101 turns out with my 500mm telephoto lens in comparison. This is the result.
300x 30s
25 calibration frames each
Star Adventurer GTi
TTArtisan 500mm f/6.3
ZWO 533MC Pro
ASIair Mini
Bortle 6
Stacked & processed in PixInsight (Stretching, SPCC, Background Extraction, Gradient Correction, NoiseXTerminator, StarXTerminator), final touches in Photoshop (star recombination & color adjustments)
by HuckleberryWeird1879