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Uploaded 16-Aug-10
Taken 13-Aug-10
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Dimensions1200 x 856
Original file size625 KB
Image typeJPEG
Color spaceUncalibrated
Date modified13-Aug-10 23:40
Shooting Conditions

Camera modelCanon EOS REBEL T2i
IC1318 Butterfly Nebula & Sadr

IC1318 Butterfly Nebula & Sadr

The area around Sadr (Gamma Cygni) features various nebulous regions which show in this photo as pink and red patches surrounding Sadr - the bright star in this photograph.

Sadr is actually not near these nebulae; it is a foreground star located half way between us and the nebulae. We are looking deep into the Orion Arm of our Galaxy in this direction. The nebulae are more than 3000 light years from Earth.

Location: RASCals Star Party, Metchosin, BC, Canada

Date/Time: August 13, 2010 11:40pm PDT

Equipment: Hutech-modified Canon T2i dSLR utilizing an IDAS UIBAR-III filter mounted prime focus on a Borg 101ED f/4 Astrograph mounted on an unguided HEQ5.

Exposure: 107 x 1 minute at ISO 800

Conditions: Temperature 16°C, Humidity 55% (no dew). LVM 6.0, Transparency 5/5, Steadiness 5/5, clear skies

Processing:

ImagesPlus 3.82a x64 - Auto-process dSLR - Bayer at capture white balance; digital development from raw, dark frame calibration, normalize, grading,
alignment, average min/max exclude combine. Aggressive contrast stretch (BP 862, Bkgd 130); crop & save as 48 bit TIF.

ACDSee Pro 3: resize, reduce colour depth to 24 bit, save as jpg.