Comet ISON on its incoming trajectory

Posted by jm-astro
on Monday, December 9, 2013

Four Sketches of Comet C/2012 S1 (ISON), on its incoming trajectory spanning Oct-Nov. 2013, showing changes in the comet over time. Used a 20" F/5 Newtonian with 13mm Ethos, 35mm Plossl (Russell Optics), and 35 mm Deep View eyepieces. Drew filtered views in B&W on Strathmore tracing paper and a backlit tablet (LED Light Box app for i-Pad). Then stacked the filtered views to create colored drawings, where applicable. Used Photofiltre and Canvas for editing. Also used Baader Neodymium, Baader OIII, and Red filters.

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