Helix Nebula 
(Click to enlarge) This image © Copyright 2018, Michael Fulbright This object is low for me and I have about a 2 hour window to shoot it before it disappears behind the trees in the backyard. Date: 9/03/2005 Telescope: TEC 140 APO + 0.75 Astro-Physics focal reducer (750mm) Mount: Mountain Instruments MI-250 Camera: Starlight Xpress SXV-H9 Exposure: L: 40 minutes (20x2 minutes) unbinned; R: 10 minutes (10x1 minute) G: 15 minutes (15x1 minute) B: 19 minutes (19x1 minute) binned 2x2
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