M13 in Hercules



Scope: Starmax127  f/4.3 Location: Del Mar CA   5/18/2003  Camera: ToUcam SC3

Exposure: 20 x 20 sec  and 24 x 7 sec  frames with IR block filter, 16 x 8 sec each RGB filters

Processing: Captured aligned and stacked in K3CCDTools in 2x mode with L,R,G,B saved as FITs. LRGB masters were registered and combined in Astroart. Some Lowpass filtering was applied followed by un-sharp mask on the Luminance frame. LRGB result was saved as a BMP. The result BMP was level adjusted for smoother background in Photoshop

This image was on of the first LRGB images taken on the Starmax scope (taken the same night as M3 with identical settings and similar processing). There are two luminance exposures with the long exposure for depth and the shorter (about 1/3 the time) used to enhance core detail otherwise washed out in the longer exposure. Color was increased in saturation for visual effect.  Horizontal FOV is 30'


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