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M5 - Globular Cluster in Serpens Caput


From the author of   Sizing Up The Universe


M5

23:03 EDT May 6, 2006.
Starlight Express SXV-H9 on 10" RCOS at f/9.
L = 40 min, R = 9 min, G = 10 min, B = 8 min (unguided 20-second and 1-minute subexposures).
Log stretch, Unsharp mask.


M5

22:08 EDT June 7, 2005.
Starlight Express SXV-H9 on 10" RCOS at f/9.
L = 9.6 min, R = 5 min, G = 5 min, B = 5 min (unguided 12-second and 1-minute subexposures).
Log stretch, Unsharp mask.


M5

M5-LRGB

Animated gif blinks a gamma stretch (0.4) of the luminance for the two images above. The RR-Lyrae stars (and a few hot pixels) are easy to spot.

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