Robert Vanderbei M13
Submitted by admin on Fri, 02/08/2008 - 18:11.
Taken with a 10" Ritchey-Chretien from RCOS using a Starlight Express SXV-H9 camera. The image combines 10 minutes of unfiltered luminance with 1.6 minutes of red, green, and blue filtered images. Raw images were unguided 12-second exposures. The seeing was excellent---FWHM = 1.6 in some of the raw images.
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