Image information: Stacked, dark-subtracted, registered combination of 10 x 10s unfiltered images and 10 x 10s in R V and I-bands. Image taken 18/08/2006 21:20 UT.
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| Description: M22 is very loose, but bright globular cluster in the
constellation Sagittarius. A number of dying giant branch stars can be seen here
(red), with some particularly `late-type' stars that are shedding their outer
atmospheres and becoming enveloped in dust.
Image information: Stacked, dark-subtracted, registered combination of 10 x 10s unfiltered images and 10 x 10s in R V and I-bands. Image taken 18/08/2006 21:20 UT. |
Physical information: Magnitude: 5.1, size: 17', classification: VII, aka NGC6656.