[M21 in IR, 2MASS]

The open cluster Messier 21, infrared photograph from the 2MASS Atlas. Field size is 22.0' x 25.0'. The image was created from data collected with the 2MASS telescopes in Arizona and Chile. False colors were created by mapping different IR wavelength bands to colors, with the warmest, shortest wavelengths to blue and the coolest, longest waves to red.

  • More 2MASS IR images

    [M21, NOAO]

    Open cluster M21 as photographed at the Burrell Schmidt telescope of Case Western Reserve University's Warner and Swasey Observatory, located on Kitt Peak near Tucson, Arizona, during the Research Experiences for Undergraduates (REU) program. This is an approximately true-color composite created from eleven images taken in July 1995 and June 1996 using BVR filters. Image size is 28.8 arc minutes.
    Credit: REU program/NOAO/AURA/NSF

  • More information on this image (N.A. Sharp, NOAO)
  • Image of M21 together with M20 taken with the same telescope
  • More AURA/NOAO images

  • More images of M20 and M21
  • More images of the M8/M20/M21 region
  • Amateur images of M21

    Hartmut Frommert
    Christine Kronberg

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    Last Modification: November 19, 2002