C/2012 S1 November 20, 2013UTC
I tried imaging of the comet with 589nm narrow band filter for Na-D, and the tail was visible on the frame.
equipment: Takahashi FSQ-106ED refractor with Reducer QE 0.73x at f/3.6 and Canon EOS 5Dmk2-sp2, modified by Seo-san on Takahashi EM-200 temma 2 jr. equatorial mount autoguided at the center of the condensation of the coma with side by side mounted Takahashi FS-60C, Starlightxpress Lodestar Autoguider, and PHD guiding
exposure: 5 times x 30 seconds at ISO 1,600 and f/3.6
First exposure started at 20:11:35 and the last at 20:14:11 November 20, 2013UTC.
(imposed frame, trailed a little due to flexure at ball head)
equipment: Leica Apo-Elmarit-R 180mmF2.8 with Edmund Optics 50mm 589nm Bandpass Filter and EOS 5Dmk2-sp2 modified by Seo san on the mount
exposure: 1 time x 240 seconds at ISO 1,600 and f/2.8
(I set the aperture of the lens at f/2.8, but the diameter of the filter, 50mm limited it at f/3.6 at the most)
site: 1,067m above sea level at lat.35 21 43 N. and long. 138 49 54 E. on the eastern foot of Mt. Fuji