C/2012 S1 ISON with FSQ-106ED and Reducer QE 0.73x November 5, 2013UTC

C/2012 S1 ISON with FSQ-106ED and Reducer QE 0.73x November 5, 2013UTC, a photo by hirocun on Flickr.

Via Flickr:
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: 4 times 900 seconds, 3 times 240 seconds, and 3 times 60 seconds at ISO 800 and f/3.6
First 900-second exposure started at 18:33:45 and the last 60-second exposure at 19:49:58 November 2013UTC.

site: 1,253m above sea level at lat. 36 14 35 N. and long. 138 36 22 E. in Gunma
Ambient temperature was around 3 degrees Celsius, and SQM-L read as 21.20 at most.