NGC 6820 in Ha

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Description: This is an exceedingly dim area of hydrogen gas that was discovered in 1864. The brighter central area is known as NGC 6820 (or Sh2-86). It surrounds an open cluster known as NGC 6823. A full-sized crop of the central area shows the 'elephant trunk' structures pointing toward the open cluster.
Constellation: Vulpecula
Date: 8, 24, 29, 30 may 2007
Equipment: AP 130, STL11000, Mach1 GTO
Exposure: Ha: 14.5 hours (6nm Astrodon)