NGC7293, the Helix Nebula in Ha by Steve Cooper

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NGC7293, the Helix Nebula in Ha

QSI 583wsg Camera and Vixen 8" f/4 Newtonian
telescope with MPCC. Astrodon 5nm Ha filter.
AP 900 mount. SX Loadstar autoguiding camera.
11 X 20 min subs binned 1X1. Sensor temp @ -20 deg. Frames acquired with MaxIm DL 5, calibrated and combined in CCD Stack2. Final processing in ImagesPlus 4.0.
Stardust Ranch, Okeechobee FL. Nov 2011
http://stardustranch.org/

other sizes: small medium large original auto

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