[vsnet-alert 20192] Re: ASASSN-16kt: probable nova (9.1 mag) in Lupus

Denis Denisenko d.v.denisenko at gmail.com
Sat Sep 24 16:31:35 JST 2016


Here are color-combined DSS finder charts centered at ASASSN-16kt:

http://scan.sai.msu.ru/~denis/ASASSN-16kt-JRIR.jpg (10'x10')

Three comparison stars with Tycho V magnitudes 7.75 (HIP 75771), 10.04
and 10.56 are nicely located in the field (marked on the image).

http://scan.sai.msu.ru/~denis/ASASSN-16kt-JRIR5x5.jpg is a 2x zoomed
version. Note the green spot near the position of possible Nova. 1992
Red plate was used as a green channel (with 1978 IR plate as red and
1975 J as blue). I am not 100% sure if the green spot (Fmag=18.81 in
GSC 2.3.2) is caused by the real variability of Nova progenitor in
1992, by the strong H_alpha emission line or by a plate defect.

Denis Denisenko



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