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Tuesday, November 19 2019 @ 01:41 pm EST

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The Pinwheel Galaxy M101 or NGC 5457) a face-on spiral galaxy 21 million light-years distant in the Ursa Major, first discovered by Pierre M├ęchain in 1781

L(Ha)R(Ha)GB
Luminance taken on the nights of May 31 and June 2, 2016 Highland Lakes NJ. Celestron C8, Starizona F7.5 reducer/corector 1500mm effective focal length, QSI 583wsg camera

Luminance 50 x 5 minutes binned 2x2
H-alpha 10 x 10 minutes binned 2x2

RGB taken May 10, 2016 Cherry Springs State Park

William Optics Zenitstar 80, Televue reducer/corrector, QSI 583wsg
RGB 7 x 4 minutes each binned 2x2

Total exposure 378 minutes

  Image 4 of 115
  20160608135630782
Monday, June 13 2016 @ 03:24 pm EDT
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Authored by: Sandra Repash on Sunday, July 10 2016 @ 02:23 pm EDT M101 Revisited
Nice work.
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