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The Helix Nebula: a Gaseous Envelope Expelled By a Dying StarAbout the ObjectObject Name: Helix Nebula, NGC 7293 or "The Eye…
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The Helix Nebula: a Gaseous Envelope Expelled By a Dying StarAbout the ObjectObject Name: Helix Nebula, NGC 7293 or "The Eye of God"Object Description: Planetary NebulaPosition (J2000): R.A. 22h 29m 48.20sDec. -20° 49' 26.0"Constellation: AquariusDistance: About 690 light-years (213 parsecs)Dimensions: The image is roughly 28.7 arcminutes (5.6 light-years or 1.7 parsecs) across.About the DataInstruments: ACS/WFC on Hubble Space Telescope (HST) and Mosaic II Camera on CTIO 4m telescopeExposure Time: 4.5 hours (HST) and 10 minutes (CTIO)Filters: F502N ([O III]) and F658N (Ha) (for the HST); c6009 (H alpha)and kc6014 ([O III]) for the CTIOImage propertiesCentered on white dwarfed and croppedDownsampled to 3200x3200Saved as jpg, quality 8/10, 5 scansStitching errors manually fixed

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The Helix Nebula: a Gaseous Envelope Expelled By a Dying StarAbout the ObjectObject Name: Helix Nebula, NGC 7293 or "The Eye of God"Object Description: Planetary NebulaPosition (J2000): R.A. 22h 29m 48.20sDec. -20° 49' 26.0"Constellation: AquariusDistance: About 690 light-years (213 parsecs)Dimensions: The image is roughly 28.7 arcminutes (5.6 light-years or 1.7 parsecs) across.About the DataInstruments: ACS/WFC on Hubble Space Telescope (HST) and Mosaic II Camera on CTIO 4m telescopeExposure Time: 4.5 hours (HST) and 10 minutes (CTIO)Filters: F502N ([O III]) and F658N (Ha) (for the HST); c6009 (H alpha)and kc6014 ([O III]) for the CTIOImage propertiesCentered on white dwarfed and croppedDownsampled to 3200x3200Saved as jpg, quality 8/10, 5 scansStitching errors manually fixed

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