by lucam_astro » Sun Jan 24, 2021 9:08 pm
Heckathorn-Fesen-Gull 1 (HFG1, PK136+05) is a very old (~100,000 year old) and extremely faint planetary nebula in the constellation Cassiopeia. It was discovered in deep OIII images by Heckathorn, Fesen, and Gull in 1982 using the emission line survey of Parker et al (1979). The central star is a binary variable pair V664 Cas (13.7 magnitude). HFG1 is the first well observed PN, which reveals a cometary-like structure. As HFG1 moves through the interstellar medium and V664 ejects material, a bluish bow shock is formed and a red long trail of emissions is left in its wake.
Acquisition details:
https://astrob.in/tbilkr/0/
TS ONTC 10in f4
TeleVue Paracorr Type 2
ZWO ASI1600MM Pro, ASI294MM Pro
Astrodon 3nm Ha, 3nm OIII, RGB filters
AP 1100GTO
Data acquired in Schenectady, NY from September 2020 to January 2021
Total integration time: 82 hours.
Copyright: Luca Marinelli 2021
Heckathorn-Fesen-Gull 1 (HFG1, PK136+05) is a very old (~100,000 year old) and extremely faint planetary nebula in the constellation Cassiopeia. It was discovered in deep OIII images by Heckathorn, Fesen, and Gull in 1982 using the emission line survey of Parker et al (1979). The central star is a binary variable pair V664 Cas (13.7 magnitude). HFG1 is the first well observed PN, which reveals a cometary-like structure. As HFG1 moves through the interstellar medium and V664 ejects material, a bluish bow shock is formed and a red long trail of emissions is left in its wake.
Acquisition details:
https://astrob.in/tbilkr/0/
TS ONTC 10in f4
TeleVue Paracorr Type 2
ZWO ASI1600MM Pro, ASI294MM Pro
Astrodon 3nm Ha, 3nm OIII, RGB filters
AP 1100GTO
Data acquired in Schenectady, NY from September 2020 to January 2021
Total integration time: 82 hours.
[attachment=0]HFG1_resample_AB.jpg[/attachment]
Copyright: Luca Marinelli 2021