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M21, is an open cluster in Sagittarius with about 55 member stars. At magnitude 5.9 M21 is an easy find with binoculars or a finder scope but is well camouflaged among all of the open clusters in the "steam" from the "teapot". It's just a short hop of less than a degree from the Trifid Nebula, M20 to the southwest. M21 is about 5,200 light years distant and is estimated to be about 20 light years in diameter.
Telescope: LX200 10" SCT, f/6.3
Camera: Hutech modified Canon 350D, ISO 800
Exposure Count: 17 @ 5 minutes, 1 hours, 25 minutes total exposure.
Guiding: CCD Soft with ST402ME, Orion 80ED
Last Updated: 11/12/2014 - Copyright © 2004-2013 by Dan Lessmann. All rights reserved. Please click here for my usage policy.