Messier 100 spiral galaxy and supernova SN 2019ehk: an image – 6 June 2019

After a long month of cloudy weather, we imaged supernova SN 2019ehk and its host galaxy Messier 100 again, finding it significantly fainter. Here it is our image.

Supernova SN 2019ehk in Messier 100: 6 June 2019

Supernova SN 2019ehk in Messier 100: 6 June 2019

The image above comes from the average of 12, 300-seconds exposures, unfiltered, remotely taken with “Elena” (PlaneWave 17″+Paramount ME+SBIG STL-6303E) robotic unit available at Virtual Telescope. SN 2019ehk is marked in the bottom right insert: it was discovered by Jaroslaw Grzegorzek and spectroscopy showed it to be a type II supernova. We estimated it as bright as mag. 17.4 (unfiltered, R-mags for the reference stars from the Gaia DR1 star catalogue), almost 1.5 mags fainter than one month ago.

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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