Supernova SN 2023dbc in Messier 108 (NGC 3556) galaxy: a image – 20 Apr. 2023.

We observed supernova SN 2023dbc in the spiral galaxy NGC 3556, aka Messier 108, as part of our supernova follow-up program: here it is our image.

Supernova SN 2023dbc in Messier 108 galaxy: 15 Oct. 2022.

Supernova SN 2023dbc in Messier 108 galaxy: 15 Oct. 2022.

The image above comes from the average of ten, 120-second unguided exposures, unfiltered, remotely taken with the Celestron C14+Paramount ME+SBIG ST8-XME robotic unit available as part of the Virtual Telescope Project. The supernova is indicated by an arrow in the upper left inset.

The host galaxy is the beautiful, edge-on barred spiral galaxy Messier 108 (aka NGC 3556), located at about 30 millions of light years. As for the supernova, we estimated SN 2023dbc as bright as mag. 17.3 (unfiltered, R-mags for the reference stars from the Gaia DR2 star catalogue). This transient was discovered on 13 Mar. 2023 by the Zwicky Transient Facility and it is a type Ic supernova, suffering substantial extinction by dust in the host galaxy because of its edge-on perspective.

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