Crescent Nebula in Narrowband using CFHT mix Ha-OIII-SII for RGB. Bin 1x1 HA 4x30m, OIII 6x30m, SII 3X30m.<br /> TEC 140 @ f5.6 and FLI ML8300 camera.<br /> Taken by Lynn Hilborn, WhistleStop Obs, Grafton,Ontario August 11 and 29, 2011.
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