M55, NGC6809


About this image

M55 is a globular cluster in the constellation Sagittarius. Quite large on the sky (about two thirds of the Moon's diameter), but with a very loose, almost non-globular, appearance, M55 is about 18000 light-years away and about 100 light-years across. This composite was created from images taken in June 1996 at the Burrell Schmidt telescope of Case Western Reserve University's Warner and Swasey Observatory, during the Research Experiences for Undergraduates (REU) program operated at the Kitt Peak National Observatory and supported by the National Science Foundation.

More: stars page, globular clusters page, messier page.

Minimum credit line: Hillary Mathis, REU Program/NOAO/AURA/NSF

Downloadable versions:
400 x 400 36 kb color JPEG (on this page)
1900 x 1900 416 kb color JPEG
1900 x 1900 3.5 Mb 8-bit color TIFF
1900 x 1900 10.5 Mb 24-bit color TIFF
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