Copernicus – 11/11/2017 9h 20m UT

Telescope: Meade LX50 Mak 7 at f/15, Orion Atlas EQ-G
Camera: ZWO ASI071MC, Orion Imaging Skyglow Filter
Sensor Temperature: -10C, Gain: 300, Offset: 50
Exposure: 64x0.032sec, saved as FITS
White Balance: Nebulosity Automatic
Software: Nebulosity, Registax, Photoshop

This is one of several images from the morning of November 11th. Unfortunately, the sky had become thick with haze, making it impossible to take images for a mosaic as the brightness of the moon kept changing, but it was possible to take fairly good wide field images of selected regions such as this field centered on Copernicus. I find this area fascinating to watch as the lighting changes at different sun angles. Here it is late afternoon on the lunar surface near Copernicus. The magnificent ray structure has faded, but nearby craters and crater chains that were hidden by the shadowless midday sun have reappeared. At the upper right the sun has set at the foot of the Apennines while brilliant sunlight illuminates their western flanks. At the lower right the setting sun casts long shadows across the floor of Ptolemy making it easy to spot shallow craters on the interior flood plain.


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