Bright and Dark Nebulae

August 07, 2012

(1 Image)

Tags: eos 60Da

This dust choked region of the night sky is located in the constellations of Ophiuchus and Scorpius. The Pipe Nebula / Dark Horse at left is a large area of dark nebulosity, opaque dust and gas that hides stars behind it. Tendrils of dark nebulae stretch all the way across the frame to the Rho Ophiuchi complex at right. Antares, a red supergiant, is the brightest star in the image.

This advanced astrophoto image was shot with a Canon EOS 60Da DSLR camera and Canon 50mm f/1.4 USM lens working at f/4 with 54 minutes of total exposure through an IDAS LPS filter. Nine 6-minute exposures at ISO 800 were stacked with a min-max excluded average combination method. The white point was adjusted for correct color with a G2V color star calibration. A non-linear curve was applied to the linear raw data and the foreground sky color subtracted to give accurate color. The image was then contrast enhanced and color adjusted in post processing.

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