NGC 6820/3

NGC 6820/3

NGC 6820 is a diffuse emission nebula that surrounds the open cluster of stars NGC 6823 (at the center of the image). The intense light from the hot, massive stars in the cluster is blowing away the gas in the nebula, causing the distinctive 'pillar' shapes on the left side of the image.

Observatory: WIYN Observatory  Kitt Peak, Arizona
Telescope: WIYN 0.9-Meter
Instrument: Mosaic I  
Astronomer: T.A. Rector (University of Alaska Anchorage)
Date of Observation: 09-15-2000
Filters and Assigned Colors: Hydrogen alpha (red), Oxygen [OIII] (green) and Sulfur [SII] (blue)
Exposure Times: 5x5min in each filter
Location of Image: Vulpecula
Field of View: 45.3 x 31.6 arcmin
Orientation: North is up, East is to the left
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