Scientific Photography

Challenge #12 in the Great Movements in Photography series. Hosted by Mark Scott Abeln.
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Photography is more than just an art form; rather it also has great importance in science, industry, and government. Submit a photograph that has scientific or technological importance: consider astrophotography, photomicrography, or other photos with scientific, industrial, or technological interest. Just because a photograph has scientific interest, that does not mean that it must not be a striking and memorable image in its own right.
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Veil Nebula (NGC6960)
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This is the West side of the beautiful Veil Nebula area in the Constellation Cygnus, also known as the Witch's Broom. The delicate, intertwined, lacework consists of areas of Hydrogen Alpha gas emissions (Ha-red) and Oxygen gas emissions (OIII-blue-green).
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Submitted: Friday, 29th April, 2011 01:23 (GMT)
Taken: Thursday, 17th August, 2006
Focal length: 2500 mm
Shutter speed: 10 sec
Aperture: F5
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Notes: Used a Luminance layering technique where much of the exposure time was spent on unfiltered B&W Luminance images to gain the deepest possible image. 36x2 minutes of unfiltered Luminance exposures 16x2 minutes each of Red, Green and Blue exposures through colored filters. Luminance Layering done in Photoshop CS2
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