Seiji N
HFG1 (PK 136+05) and Abell 6 (PK 136+4.1) -- Revised
I have never used PixInsight to process this image so here it is. I may revisit this next month.
Captured in Octorber 2015.
----------------------------------------------------------
HFG1 (Heckathorn-Fesen-Gullis 1) is a very faint and large (huge), ancient planetary nebula in Cassiopeia, with almost no Sii, small Ha, and moderate amount of Oiii emissions. The more stereotypical, "bubble"-shaped Abell 6 has both Ha and Oiii. Note a bow shock surrounding HFG1 and a faint Ha tail. This has turned out to be one of the most difficult imaging I have done so far, with F/3 Hyperstar+Atik460ex+5nm Astrodon filters. Shot over 3 nights in unusually hazy October sky from Grandview Campground, Inyo, CA.
HFG1 (PK 136+05) and Abell 6 (PK 136+4.1) -- Revised
I have never used PixInsight to process this image so here it is. I may revisit this next month.
Captured in Octorber 2015.
----------------------------------------------------------
HFG1 (Heckathorn-Fesen-Gullis 1) is a very faint and large (huge), ancient planetary nebula in Cassiopeia, with almost no Sii, small Ha, and moderate amount of Oiii emissions. The more stereotypical, "bubble"-shaped Abell 6 has both Ha and Oiii. Note a bow shock surrounding HFG1 and a faint Ha tail. This has turned out to be one of the most difficult imaging I have done so far, with F/3 Hyperstar+Atik460ex+5nm Astrodon filters. Shot over 3 nights in unusually hazy October sky from Grandview Campground, Inyo, CA.