NGC 4636 with SN 2020ue

Posted by dcrowson
on Monday, February 3, 2020
NGC 4636 (UGC 7878, PGC 42734 and others) is a large (approximately 105,000 light-years in diameter) elliptical galaxy located approximately 49 million light-years away in Virgo.

On January 12th, 2020, Koichi Itagaki discovered a magnitude 15 supernova designated as SN 2020ue ( This one has brightened to around magnitude 12.1. The supernova is the bright, out of place blue star at about 5 o’clock under NGC 4636.

2MASX J12424244+0247035 (PGC 1237353 and others) is the largest galaxy above NGC 4636. It is the brightest member of Abell 1599.

Luminance – 31x600s – 310 minutes – binned 1x1
RGB – 8:8:9x300s – 40:40:45 minutes each – binned 2x2

435 minutes total exposure – 7 hours 15 minutes

Imaged over six nights in January, 2020 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.


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