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NGC 7293, the Helix Nebula

Optics: AG Optical 12.5" iDK @ f/6.7 l=2130mm
Camera: QSI 640wsg-8 @ -31C
Filters: Astrodon LRGB
Mount: Astro-Physics AP 1100GTO
AO: Starlight Xpress Active Optics SXV-AO-LF
Guiding: OAG with Starlight Xpress Lodestar X2 Auto Guider / PHD2 Guiding
Location: near Animas, New Mexico
20 hours exposure over 13 nights, 21 Oct 2016 - 21 Sep 2017
R:G:B 6h45m:6h30m:6h45m (27x15m : 26x15m : 27x15m) binned 1:1:1
Captured with: Home-brewed observatory automation and image aquisition software
Processed with PixInsight