SUNSET: 
0
Photographer:
Jon Greif
Location of Photo:
Julian, CA, USA
Date/Time of photo:
July 18, 2020, at 11:00 pm PDT
Equipment:
Astrotech AT72ED II 72 mm refractor with focal reducer (FL=344 mm), AZ-GTI mount modified to equatorial, ZWO ASI533MC Pro main camera, ZWO ASI122 mini guide camera OAG, Pixinsight 1.8.8 processing software.
Description:
NGC 6820 is an emission nebula that surrounds open star cluster NGC 6823 in the constellation Vulpecula. The center of the open cluster is about two million years old and is predominantly young, bright blue-white stars, surrounded by huge pillars of gas and dust, probably formed when surrounding gas and dust was pushed and eroded away by radiation from nearby stars. Open star cluster NGC 6823 is about 50 light years across and lies about 6000 light years away.
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