Exposures: 4.3 hours of Ha (in 20 minute subs) and 40 min each RGB (in 10-minute subexposures) for a total of 6 hours 20 minutes.
Pickering's triangle is part of the Veil nebula, a massive supernova remnant in Cygnus. The supernova that spawned this remnant and its companions is thought to have occurred 7,500 years ago. Pickering's triangle is named after a famous Harvard astronomer, Edward Charles Pickering (1846-1919).
Field of View =52 x 35 arc minutes
2,600 light years away
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