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Uploaded 4-Aug-12
Taken 4-Aug-12
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19 of 32 photos
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Dimensions2400 x 1600
Original file size382 KB
Image typeJPEG
Color spaceUncalibrated
Date modified4-Aug-12 14:06
Summer Triangle with H alpha enhancement-Labled

Summer Triangle with H alpha enhancement-Labled

I love the summer triangle region defined by the three bright stars overhead - Deneb, Altair and Vega. This is a combination of two sessions, one with and one without a 12nm H alpha filter. It is my best effort in capturing this amazingly rich region of the sky.
Details
2012-08-03 at the Victoria Centre Observatory.
Conditions - clear and warm (24 deg C) with no wind and a rising nearly full moon dreating the glow in the lower right.
Equipment - Sigma 15mm F/2.8 lens on a Hutec modified Canon T3i camera with an Astrotrac mount.
Exposure - 14 - 60s color frames at ISO 100 and f/2.8. 8 -60s Ha frames at ISO 3200 and f/2.8.
Processing - Alignment, stacking and stretching in Images Plus with additonal enhancement in Photoshop. Ha and color were combined using lightening blend layer in Photoshop.