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Discovery of DLT18a/AT 2018is with PROMPT

ATel #11207; S. Wyatt D. Sand, (UA), S. Valenti, K. A. Bostroem (UC Davis)
on 20 Jan 2018; 19:24 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: David Sand (dave.j.sand@gmail.com)

Subjects: Optical, Supernovae

Referred to by ATel #: 11210

We report the discovery of DLT18a/AT 2018is. The object was discovered 2018 1 20.64 UT at R~17.9 mag during the ongoing D<40 Mpc (DLT40) one day cadence supernova search, using data from the PROMPT 5 0.41m telescope located at CTIO. A confirmation image was obtained on 2018 1 20.65 using a COJ 0.4m telescope at Sliding Spring Observatory in NSW Australia as a part of the Las Cumbres Observatory network. DLT18a/AT 2018is is located at RA: 13:16:57.35 Dec: -16:37:04.43, (-21.42, +56.17 arcsec offset from the center of the host galaxy NGC5054). We do not detect the transient on 2017 7.1 UT or in prior imaging of the field. All images were taken in a 'Clear' filter which was calibrated to an approximate r-band magnitude using the USNO-B1 catalog. Further observations are encouraged