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M15 - A Globular Cluster in Pegasus


From the author of   Sizing Up The Universe

Click here for Hertzsprung-Russell diagram.

Color
M15
Monochrome
M15
Best single frame
M15

01:36 EDT Jul 17, 2013
ClearSky rated the "seeing" as "excellent". FWHM = 1.22 arcsec or better.
Best luminance frame had FWHM = 1.06 arcsecond.
Starlight Express SXV-H9 on 10" RC at f/9.
20-second unguided exposures.
L best 60 out of 90. R, G, B best 20-ish out of 30.
Log stretch, (mild) unsharp mask, color saturation boosted.


Click here for Hertzsprung-Russell diagram.

M15

Combo Version
23:47 EDT Sep 15, 2007 and 18:34 EST Nov 25, 2006.
Starlight Express SXV-H9 on 10" RC at f/9.
L from Sep 15, 2007 (below) and R, G, B images from Nov 25, 2006 (below).
Log, Gamma, Unsharp Mask.


M15

23:47 EDT Sep 15, 2007.
Starlight Express SXV-H9 on 10" RC at f/9.
L = 33.0 min (guided 1-minute subexposures, best 33 out of 156).
R, G, B images from Nov 25, 2006 (below).
Log, Gamma, Unsharp Mask.


M15

M15

18:34 EST Nov 25, 2006.
Starlight Express SXV-H9 on 10" RC at f/9.
L = 10.0 min, R = 5.0 min, G = 5.0 min, B = 5.0 min (guided 20-second, 1-minute, and 5-minute subexposures).
Log, Unsharp Mask.


M15

20:38 EDT Sep 25, 2006.
Starlight Express SXV-H9 on 10" RC at f/9.
L = 23.3 min, R = 6.0 min, G = 6.0 min, B = 6.0 min (unguided 20-second subexposures).
Log, Unsharp Mask.


M15

23:10 EDT Sep 4, 2005.
Starlight Express SXV-H9 on 10" RC at f/9.
L = 19.7 min, R = 3.3 min, G = 4.3 min, B = 3.3 min (mostly unguided 20-second subexposures).
Log, Unsharp Mask.

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