NGC 6720; M57; Ring Nebula; w/ IC 1296

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Object(s):	NGC 6720; M57; Ring Nebula, planetary nebula; with IC 1296, barred spiral galaxy
Telescope:	Meade 12" LX200GPS f/5.9
Camera:	Atik 383L+
Mount:	Meade LX200GPS w/ Superwedge, permanent pier
Filters:	Astrodon LRGB Tru-Balance E-Series; Orion H-a 7nm narrowband; Baader O-III 8.5nm narrowband;
Focus and Collimation:	GoldFocus Plus Collimation Mask and Analysis Software v3.0
Autoguide:	GoldGuide v2.1 w/ Orion 102mm Mak-Cass f/12.0, Meade DSI Pro II
Exposure:	L:R:G:B:H-a:O-III = 440:90:90:90:1230:570 min.; 5 min. subframes; total 41.8 hours
Process:	2 masked layers: (1) star field and background - standard LRGB; (2) nebula and halo - H-a:O-III:O-III = RGB, weighted 1.0:1.0:0.6 for approximate true color; proprietary software, FITS Liberator 3, AIP4Win v2.4, Photoshop CS4
FOV:	20' x 15'
Date(s):	28 & 29 June 2012, 1-7 July 2012
Credit:	Copyright © 2012 Jeff Winter, click for Inquiries