12  September  2017
Copernicus Crater – January 7, 2017   

By   Tom Wildoner

Copernicus – diameter is 96 km, named after the astronomer Nicolaus Copernicus.
 It typifies craters that formed during the Copernican period in that it has a prominent ray system.
From Wikipedia: The Copernican Period in the lunar geologic timescale runs from approximately 1.1 billion years ago to the present day.
 The base of the Copernican period is defined by impact craters that possess bright optically immature ray systems.
Tech Specs: ZWO ASI290MC camera and Meade 12” LX90 telescope mounted on a Celestron CGEM-DX mount.
Software used included Sharpcap v2.9, AutoStakkert! Alpha Version, ImagesPlus v5.75a, and Registax v6.1.0.8.
Photographed on January 7, 2017 from Weatherly, Pennsylvania.


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