Messier 100 spiral galaxy and supernova SN 2019ehk: an image – 25 June 2019
As part of our supernova follow-up program, we imaged supernova SN 2019ehk and its host galaxy Messier 100 again, finding the transient marginally faintervthan earlier this month. Here it is our image.
The image above comes from the average of seven, 180-seconds exposures, unfiltered, remotely taken with “Elena” (PlaneWave 17″+Paramount ME+SBIG STL-6303E) robotic unit available at Virtual Telescope. SN 2019ehk is marked with two red lines: it was discovered by Jaroslaw Grzegorzek and spectroscopy showed it to be a type II supernova. We estimated it as bright as mag. 17.5 (unfiltered, R-mags for the reference stars from the Gaia DR1 star catalogue), marginally fainter than earlier this June, when the supernova was clearly fading from the peak in May.
Messier 100 was discovered by Pierre Méchain on 15 Mar. 1781 and it is a stunning spiral galaxy in the constellation of Coma Berenices. Located at about 55 millions of light years, it belongs to the Virgo Cluster. Several smaller galaxies are visible all around.
Further observations ill follow, weather permitting.
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