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reclassified-information
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Reclassified information | Astronomy Magazine
Michael P. Caligiuri from Carlsbad, California CTB 1 (Abell 85) is a faint supernova remnant in Cassiopeia roughly 9,800 light-years distant. Originally classified by George Abell as a planetary nebula, it’s over half a degree wide — larger in apparent size than a Full Moon. This Hα/OIII/RGB image was taken with a 4.2-inch refractor atContinue reading “Reclassified information”
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2024-09-24
2024-09-24
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Michael P. Caligiuri from Carlsbad, California
CTB 1 (Abell 85) is a faint supernova remnant in Cassiopeia roughly 9,800 light-years distant. Originally classified by George Abell as a planetary nebula, it’s over half a degree wide — larger in apparent size than a Full Moon. This Hα/OIII/RGB image was taken with a 4.2-inch refractor at f/5 and 8.25 hours of exposure.
