HFG1

HFG1

HFG1 is a planetary nebula that was produced by a binary star system (V664 Cas) that is moving rapidly through our Galaxy. The star is moving towards the upper-right of the image. As HFG1 plows through the interstellar medium, a bluish bowshock is produced; and a red trail of gas is left behind in its wake. The planetary nebula Sh2-188, which is also in this image gallery, also has an asymmetric shape because of its rapid motion through space.

Observatory: Kitt Peak National Observatory  Kitt Peak, Arizona
Telescope: KPNO 4-Meter
Instrument: Mosaic I  
Astronomer: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOAO/AURA/NSF)
Date of Observation: 10-22-2011
Filters and Assigned Colors: Hydrogen alpha (red) and Oxygen [OIII] (blue)
Exposure Times: 5x10min in each filter
Location of Image: Cassiopeia
Field of View: 26.4 x 19.7 arcmin
Orientation: North is down and East is to the right
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