Reports from Geisei Observatory <December 1, 2014>
Brightening Comet C/2016 M1 (PANSTARRS)
Comet PANSTARRS (C/2016 M1) has become visible in Sagittarius
in the pre-dawn sky. It is glowing stately as one of the few comets observable
visually. In the 15cm refractor the comet shows a round coma about 3' in
diameter but no tail. It passes perihelion on August 10 UT and may reach
8th magnitude around that time. Mars, which will be at the closest to the
earth in July, is now shining quite close to the comet. Together with Saturn
nearby, they light up the sky.
The photograph was taken using Geisei Observatory's 70cm
reflector with Nikon D700 and a 4-minute exposure at ISO 2500.
C/2016 M1 (PANSTARRS)
A 4-minute exposure on May 4, 2018
70cm f/5 reflector, Nikon D700, ISO 2500
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