Sh2-174 - The Valentine Rose Nebula
Photo by Arun Hegde
Scope / Lens
TS-Optics 200mm/8" ONTC f/4 Newtonian (carbon tube)
Camera
ZWO ASI294MM Pro
Exposure
Frames:Chroma Blue 31 mm: 30x30"(15') (gain: 120.00) -10°C bin 2x2
Chroma Green 31 mm: 30x30"(15') (gain: 120.00) -10°C bin 2x2
Chroma H-alpha 5nm Bandpass 31 mm: 260x300"(21h 40') (gain: 120.00) -10°C bin 2x2
Chroma OIII 3nm Bandpass 31 mm: 224x300"(18h 40') (gain: 120.00) -10°C bin 2x2
Chroma Red 31 mm: 30x30"(15') (gain: 120.00) -10°C bin 2x2
Integration: 41h 5'
Other
Astrobin Top Pick Nomination
Description
This is a planetary nebula; these are usually created when a low mass star, similar to our own Sun, blows off its outer layers as it exhausts its fuel for fusion. Radiation from the white dwarf at the center of the nebula ionizes the shell resulting in the PN. Billions of years from now, our own Sun will probably die a similar death.The structure of Sh2-174 though, shows a different and more complex interaction. The white dwarf star is to the right, rather than the center of the nebula, and the OIII emissions in cyan are also offset from the red H-alpha. That, and the fact that the star is older than the nebula and moving at a different speed suggests that this is caused by the white dwarf passing through and interacting with an unrelated mass of interstellar gas.
ID: 1495