Comet C/2017 S3 PANSTARRS

José J. Chambó
Location of photo
Valencia, Spain
Date/Time of photo
19 July 2018, 02:42 UT
GSO 8" f/3.8 & Atik 383L+
Comet C/2017 S3 (PANSTARRS) photographed on July 19th 2018, after a second outburst of activity, increased its brightness until magnitude 7 and expanding its greenish coma until a apparent diameter of 8', being observable through binoculars in the sky before dawn and developing a ionic tail which in this image is perceived with at least half degree lenght.
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