Heckathorn-Fesen-Gull 1 (HFG1) and Abell 6

HFG1 (Heckathorn-Fesen-Gull 1, lower-left corner) is a planetary nebula in the constellation of Cassiopeia. It was produced by a binary star system (V664 Cas) that is moving rapidly through our Galaxy. The star is moving towards the lower-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 picture shows another planetary nebula: Abell 6 (upper-right corner). Abell 6 appears to be circular with a diameter of almost 3 arc minutes. The central star is very faint and can barely be seen. I needed a very long integration time to get these very weak nebulae separated from the background. This is a collection of data from 2017 onwards. This rendition is a bicolor mapping (Ha, O3 and synthetic green) + RGB for the stars.


HFG1 and Abell 6

Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 30.5 hours – 155x5min Ha + 155x5min OIII + 3x18x5min RGB (stars)
Acquistion: August to October 2017 – 2018 – 2019 – 2021
Location: Southern Alps, France

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