Supernova ASASSN-15lf in NGC 4108: an image (15 June 2015)
The supernova ASASSN-15lf in NGC 4108 was promptly imaged at Virtual Telescope as part of a cooperation with the ASAS-SN survey (ATel 7634).
The image above comes from the average of three, 120-seconds exposures, unfiltered, remotely collected with the PlaneWave 17″+Paramount ME+SBIG STL-6303E robotic unit part of the Virtual Telescope Project. The supernova was estimated at mag. 15.9 (R mags for the reference stars from UCAC-4). The source is marked by two small segments. At the imaging time the Sun was only 9 deg. below the western horizon, so the sky was quite bright. Spectra showed this is a type IIn supernova caught at early stage.
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