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Sharpless 2-264 (Sh2-264) HII emission nebula and open cluster Collinder 69 (CR 69) in Orion. Sharpless 2-263 is also visible at roughly the 4 o’clock position about 2/3 of the way to the edge. Taken Jan 15 & 17 2008, with a DSI Pro II with an Outback Cooler and a Pentax SMC-M 28mm lens at f3.5 on an ASGT mount (not guided). H-alpha subframes were 8 min, while the GB sugbframes were 1.5 min. (The B subframes were taken with an Orion Skyglow filter to control star bloat). The resulting total exposures were Ha:Ha:G:B (min) = 288:288:60:75. Color balance was achieved via numerically scaled channels. Captured with Envisage, calibrated and sigma combined in Iris with other processing using FITZ, PixInsight LE and Photoshop CS. North is up.
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