H-Alpha Solar Image - 11/2/2003


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The composite was created by combining a 1/1000 sec. exposure for the disk details, and a 1/250 sec. exposure for the prominences, both shot on Kodak Elite II 100 slide film. A Nikon N5005 body with a Televue 2X "Big Barlow" was used. The filter used was a Solarscope 50mm 0.7 Angstrom H-alpha filter mounted on a Borg 76 Achromat refractor. The barlow was placed ahead of the Solarscope blocking filter to increase the system focal length.

Since H-alpha light is a pure red, which is hard to see on a monitor, the red channel was copied into the green channel and mixed to create an easier-to-see false-color image. All processing was done in Photoshop.


Copyright 2003 by David A. Kodama, All Rights Reserved