by KuriousGeorge » Mon Jan 29, 2018 4:07 pm
Eskimo Nebula (NGC 2392). KG Observatory.
The Eskimo Nebula (NGC 2392), also known as the Clownface Nebula or Caldwell 39, is a bipolar double-shell planetary nebula 2,870 light-years away. It was discovered by astronomer William Herschel in 1787. The formation resembles a person's head surrounded by a parka hood. It is surrounded by gas that composed the outer layers of a Sun-like star. The visible inner filaments are ejected by a strong wind of particles from the central star. The outer disk contains unusual light-year-long filaments.
Imaging telescope or lens: Celestron 8" EdgeHD
Imaging camera: QSI 660 WSG
Mount: Losmandy G-11
Guiding camera: Starlight Xpress Ultrastar
Focal reducer: Celestron 0.7X
Software: PixInsight 1.8, PHD Guiding 2, Neat Image V7, Photoshop CS3, Sequence Generator Pro, Maxim DL6
Filters: Astrodon 1.25" 3nm OIII, Astrodon 1.25" 5nm Ha, Astrodon 1.25" L
Accessories: Innovations Foresight ONAG SC, Optec FocusLock, Starizona MicroTouch Autofocuser
Resolution: 633x542
Dates: Jan. 25, 2018, Jan. 26, 2018, Jan. 28, 2018
Frames:
Astrodon 1.25" 3nm OIII: 36x120" -15C bin 1x1
Astrodon 1.25" 5nm Ha: 37x120" -15C bin 1x1
Astrodon 1.25" L: 317x10" -15C bin 1x1
Integration: 3.3 hours
Darks: ~40
Flats: ~60
Flat darks: ~60
Bias: ~20
Avg. Moon age: 9.42 days
Avg. Moon phase: 70.09%
Mean SQM: 19.50
Astrometry.net job: 1909350
Locations: Home, Rancho Santa Fe, California, United States
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Eskimo Nebula (NGC 2392). KG Observatory.
The Eskimo Nebula (NGC 2392), also known as the Clownface Nebula or Caldwell 39, is a bipolar double-shell planetary nebula 2,870 light-years away. It was discovered by astronomer William Herschel in 1787. The formation resembles a person's head surrounded by a parka hood. It is surrounded by gas that composed the outer layers of a Sun-like star. The visible inner filaments are ejected by a strong wind of particles from the central star. The outer disk contains unusual light-year-long filaments.
Imaging telescope or lens: Celestron 8" EdgeHD
Imaging camera: QSI 660 WSG
Mount: Losmandy G-11
Guiding camera: Starlight Xpress Ultrastar
Focal reducer: Celestron 0.7X
Software: PixInsight 1.8, PHD Guiding 2, Neat Image V7, Photoshop CS3, Sequence Generator Pro, Maxim DL6
Filters: Astrodon 1.25" 3nm OIII, Astrodon 1.25" 5nm Ha, Astrodon 1.25" L
Accessories: Innovations Foresight ONAG SC, Optec FocusLock, Starizona MicroTouch Autofocuser
Resolution: 633x542
Dates: Jan. 25, 2018, Jan. 26, 2018, Jan. 28, 2018
Frames:
Astrodon 1.25" 3nm OIII: 36x120" -15C bin 1x1
Astrodon 1.25" 5nm Ha: 37x120" -15C bin 1x1
Astrodon 1.25" L: 317x10" -15C bin 1x1
Integration: 3.3 hours
Darks: ~40
Flats: ~60
Flat darks: ~60
Bias: ~20
Avg. Moon age: 9.42 days
Avg. Moon phase: 70.09%
Mean SQM: 19.50
Astrometry.net job: 1909350
Locations: Home, Rancho Santa Fe, California, United States