M81 and M82 Galaxies Scope/Mount: TS-Optics PhotoLine 130mm F7 APO Refractor with Astro-Tech AT2FF Field-flattener, Celestron CI-700 Mount Camera: ZWO ASI1600MMC monochrome with ZWO LRGB and Ha, Oiii, Sii filters Guiding: QHY5L-IIM through Orion Deluxe OAG, PHD guiding software Exposure: L:(30) 120 secs @ gain=139, Ha(24) 300 secs @ gain=300, RGB: each channel (10) 120 sec @ gain=200 Software: Nebulosity, Pixinsight, NoiseXterminator Comment: 04/19/2025, Tierra del Sol, CA, good conditions. Palette = LRGB plus Ha used as mask. http://www.skydude.me/ https://app.astrobin.com/u/MarkEby
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