SN2020hvf in NGC3643
SN 2020hvf was discovered in the 14th-magnitude
galaxy NGC 3643 in southern Leo copnstellation on April 21st 2020 by the ATLAS Project. Located 21.9¥ east and 2.7¥ north of the galactic nucleus, the supernova was initially faint (mag. 15.5). After about
10 days it had climbed to magnitude 12.5, outshining not just the core but the entire galaxy because NGC 3643 is only a faint, 13.5-magnitude galaxy. This means this SN is more bight than 100 or more billion
suns! Distance: 79 millions light years.
A total of 8 images, 600 seconds long were processed, combine, and, calibrated to obtain the final graph.
Below the graph is a synthesize creation of emission and absorption lines of the entire range.