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Simeis 57 |
Constellation: Cygnus |
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Telescope: Six-Inch
Astrograph |
Date: July 25th, 26th
and 27th |
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Subexposures: Ha
91x5minutes, OIII 44x5 minutes, RGB 10x1 minute |
Total Exposure Time:
11.5
Hours |
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Distance: 4,500 light-years |
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Semeis 57
Location (blue rectangle) |
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