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HFG1 (PK 136+05)

Technical card

Resolution: 3976x2592

Frames:
Astrodon 5nm H-Alpha filter: 33x1800" bin 2x2
Astrodon Blue: 10x300" bin 1x1
Astrodon Green: 10x300" bin 1x1
Astrodon Lum: 11x600" bin 1x1
Astrodon OIII 3 nm: 35x1800" bin 2x2
Astrodon Red: 10x300" bin 1x1

Integration: 38.3 hours

Astrometry.net job: 3040898

RA center: 45.948 degrees

DEC center: 64.910 degrees

Pixel scale: 0.533 arcsec/pixel

Orientation: 0.755 degrees

Field radius: 0.351 degrees

Locations: e-Eye, Fregenal de la Sierra, Extramadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura

Description

HFG1 (PK 136+05) is a very old large, low-surface-brightness planetary nebula in Cassiopeia that was discovered by Heckathorn, Fesen, and Gull in 1982. It surrounds, and was produced by, a binary star system (V664 Cas) that is moving rapidly through our Galaxy. The star is moving towards the lower left 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.

Ref: Monthly Notices of the Royal Astronomical Society 396(2):1186 - 1188 · June 2009

Comments

Author

PeterGoodhew
Peter Goodhew
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HFG1 (PK 136+05), 





    
        

            Peter Goodhew