ISON last night | José J. Chambó

José J. Chambó
Location of photo
Valencia, Spain
Date/Time of photo
2013-11-20 @ 05:18
GSO 8" f/4 Refractor + Canon EOS 350D camera (15×25 sec. at ISO 800)
November 20 was the last night to see the comet before dawn in its way to perihelion. At 5 magnitude, to the limit for see it at naked eye. Although not fit in the 1,5º field of image, it shows a long bluish gas tail, inside seems have a narrow orange band caused by sodium emission that only occurs near the Sun.
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