Stacks Image 4832

Larger size jpg image available here: 1593x1233

NGC 6888 The Crescent Nebula

About this object

The Crescent Nebula in Cygnus is a favorite summer imaging target. This nebula has been created by its central star (near the middle of the nebula) The star known as a Wolf-Rayet star is shedding its gas. This object was imaged using Red, Green and Blue filters along with Hydrogen Alpha (Ha) and Oxygen III (OIII) filters. The blue/green envelope around the nebula is caused by ionized oxygen. The Crescent lies 5000 light years distant and is surrounded by a large area of red hydrogen emission. As a bonus near the lower left side of the image is a round nebula called PNG75.5+1.7. Can you find it? It’s thought to be a planetary nebula and was discovered several years ago by amateur astronomers. Its called the Soap Bubble nebula and was featured in an Astronomy Picture of the Day image here:
Image Details

  • Optics : Stellarvue SVS 130 refractor f5
  • Mount: Paramount MYT
  • Camera: QSI 583
  • Filters: Astrodon 36mm RGB+5nm HA, 3nmOIII
  • Exposure(min): HaOIIIRGB: 820:370:150:130:220
  • Camera/Mount Control: The Sky X, CCD Auto Pilot 5
  • Guiding: Unguided using ProTrack
  • Processing: PixInsight 1.8,
  • Location: Stark Bayou Observatory, Ocean Springs, MS
  • Date: Jun-Sep 2016
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