By Aayan Shaikh | 2025-10-12
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Comet C/2013 C2 (TENAGRA) during the outburst
On 10/12/2025 08:45 pm by Filipp Romanov | Website | Liverpool Telescope
I observed comet C/2013 C2 (TENAGRA) during its outburst in brightness at high heliocentric distance on 2025-10-12 near 20:45 UT, remotely using 2.0-m f/10 Liverpool Telescope (La Palma, Spain).
I measured the brightness of the comet from 60-sec. images with Sloan g', r' and i' filters compared using magnitudes of nearby stars from the ATLAS catalog: 18.9 r', 19.6 g', 18.7 i'.
In stacked 8x60 sec. images I measured the diameter of the condensed coma = 0.1 arcmin.
I am attaching the images: stacked 8x60 sec. (right) and color (left): 2x60 sec. with g', r' and i' filters.
My photometric data are included in the CBET 5619 http://www.cbat.eps.harvard.edu/iau/cbet/005600/CBET005619.txt
