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HFG1 (PK 136+05)


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About this observation
Peter Goodhew FRAS
Time of observation
06/11/2019 - 13:56
Observing location
Fregenal de la Sierra, Spain
APM TMB LZOS 152 Refractor
10Micron GM2000 mount
QSI6120wsg8 camera
38 hours total integration HaOIIILRGB
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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.

Astrodon Blue: 10x300"
Astrodon Green: 10x300"
Astrodon Lum: 11x600"
Astrodon Red: 10x300"
Astrodon OIII: 35x1800s bin 2x2
Astrodon Ha: 33x1800s bin 2x2
Total Integration: 38 hours
Captured on my dual rig in Spain.
Scopes: APM TMB LZOS 152 (6" aperture 1200mm focal length)
Cameras: QSI6120wsg8
Mount: 10Micron GM2000 HPS

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


djswan2002's picture

As ever, quite remarkable Peter. To others, you might just want to compare what the main sky surveys have 'seen' at this location - easy to access with Aladin - with what Peter is able to pick up.

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