C/2013 R1 Lovejoy with FSQ-106ED and Reducer QE 0.73x November 5, 2013UTC Multiple Version

C/2013 R1 Lovejoy with FSQ-106ED and Reducer QE 0.73x November 5, 2013UTC Multiple Version, a photo by hirocun on Flickr.

Via Flickr:
I tried several length of exposure on the comet as in my usual imaging of nebulae to see the length of the tail. I felt there existed two tails, shorter one toward West and longer one. The longer tail was far longer than expected and reached the right edge of the frame, about 4.5 degrees from the coma. The tail looked not straight strictly but curved convexly toward north slightly. North is up, and East is to the left.

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: 12 times 900 seconds, 4 times 240 seconds, and 4 times 60 seconds at ISO 800 and f/3.6
First exposure started at 15:00:25 and the last at 18:27:35 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.