This was the last picture taken during an all-night astronomy session last Friday night / Saturday morning. Mars is overexposed on the bottom left whilst Comet 2012 S1 ISON sails past at the upper right.
Although the planet and the comet just about share the same camera frame they were actually just under 2 degrees apart in the sky. This was more than just a line of sight effect. Comet ISON actually passed 6.5 million km from Mars les than a week earlier (on October 1st).
Next time, a visual observation and hopefully close up images of ISON.
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Dr Adrian Jannetta. Amateur astronomer, maths teacher and science enthusiast.