M31, The Andromeda Galaxy, Southwest Arm

Composite Image from Four Data Sources

8.2 Meter Subaru Telescope (NAOJ)

Hubble Space Telescope

Hydrogen Alpha: Local Group Survey

Mayall 4M Telescope, Kitt Peak National Observatory (NOAO)

Color data Robert Gendler

Image Assembly and Processing : Robert Gendler

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1500 X 1150


2000 X 1534


2600 X 1994


3500 X 2684


NGC 206 Close up (75% res)

Copyright 2014 Robert Gendler, Subaru Telescope (NAOJ),

Hubble Legacy Archive, NOAO


Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA).

The H alpha data come from the Local Group Galaxies Survey (Massey et al. 2006, Astrophysical Journal, 131, 2701) and are based on images taken with the Mayall 4-meter telescope at Kitt Peak National Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy under cooperative agreement with the National Science Foundation.