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Uploaded 19-Feb-08
Taken 17-Feb-08
Visitors 163

4 of 23 photos
Photo Info

Dimensions960 x 639
Original file size424 KB
Image typeJPEG
Color spaceUncalibrated
Date modified17-Feb-08 16:42
Crux and Coalsack

Crux and Coalsack

This wide field image of the Crux constellation and the dark Coalsack nebula to its lower left was taken during the 2008 Southern Sky Tour led by Gary Seronik. The clouds were scattered and resulted in 20 of the 64 light frames being discarded but the clear periods were good enough and I was able to produce a fairly deep image.
Date and location - Early AM of 2008-02-05 at the Ensenada Lodge, Costa Rica. Equipment- Modified Canon 350D camera with 300mm lens on Astrotrack mount. Exposure- 44 light and 40 dark frames at f/4 and ISO 1600 for 60s each with 20 flat frames added for calibration.Processing- Calibration, alignment, stacking and digital development in ImagesPlus. Some additional enhancement using Photoshop.