Imaging telescope or lens: Astro-Physics AP 130mm f/6.3 Starfire EDF
Imaging camera: SBIG STXL-11002/FW8G-STXL
Guiding telescope or lens: Astro-Physics AP 130mm f/6.3 Starfire EDF
Guiding camera: SBIG STXL-11002/FW8G-STXL
Focal reducer: Astro-Physics QUAD TCC 0.72x
Integration: 14.5 hours
Avg. Moon age: 26.99 days
Avg. Moon phase: 7.33%
Astrometry.net job: 1402147
RA center: 94.495 degrees
DEC center: 22.978 degrees
Pixel scale: 2.468 arcsec/pixel
Orientation: -90.550 degrees
Field radius: 1.317 degrees
Locations: My Back Deck, Glen Ellyn, Illinois, United States
OK, I just could not resist. This is the APOD for 2017 January 7. It's a redo of my earlier post, cropped to highlight the nebula. Here is how they described the object.
Explanation: Normally faint and elusive, the Jellyfish Nebula is caught in this alluring telescopic mosaic. The scene is anchored below by bright star Eta Geminorum, at the foot of the celestial twin, while the Jellyfish Nebula is the brighter arcing ridge of emission with tentacles dangling below and left of center. In fact, the cosmic jellyfish is part of bubble-shaped supernova remnant IC 443, the expanding debris cloud from a massive star that exploded. Light from the explosion first reached planet Earth over 30,000 years ago. Like its cousin in astrophysical waters the Crab Nebula supernova remnant, the Jellyfish Nebula is known to harbor a neutron star, the remnant of the collapsed stellar core. An emission nebula cataloged as Sharpless 249 fills the field at the upper right. The Jellyfish Nebula is about 5,000 light-years away. At that distance, this narrowband composite image presented in the Hubble Palette would be about 300 light-years across.
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