Three comets at one night

Location of photo
Elafonissi Beach (Crete, Greece)
Date/Time of photo
12 June 2018
Takahashi 106 ED with reducer 0,73x, modified Canon 6D
The photograph shows three bright comets: C/2016 M1 (PANSTARRS) (8.8 mag), 37P/Forbes (11.1 mag), 21P/Giacobini-Zinner (11.7 mag) within a 4-inch astrograph (6x2min. , ISO3200). 21P/Giacobini-Zinner was almost in the zenith (Cygnus), C/2016 M1 was 25 degrees above the southern horizon (Sagittarius), and 37P/Forbes climbed only 18 degrees at dawn (Aquarius).
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