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jshuder | all galleries >> Astrophotography >> Sharpless HII Regions > Sharpless 2-27 (Sh2-27)
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Sharpless 2-27 (Sh2-27)

Sharpless 27 (Sh2-27) HII emission nebula with several Lynds dark nebulae in Ophiuchus. Taken June
20 and 21, 2007 with a DSI Pro II and Outback Cooler with a Pentax SMC-M 28mm lens at f2.8 on an
ASGT mount. RGB subframes were 90 sec while the H-alpha subframes were 300 sec. resulting in the
following total exposures Ha:Ha+R:G:B (min) = 125:125+53:47:48. 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.

other sizes: small medium original auto
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