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Comet C/2013 R1 Lovejoy on Saturday Morning 1/4/2013

Comet Lovejoy currently rises in the northeast sky around 4:30 am. I look for it around 5 am after it rises above any haze on the horizon, but light from the oncoming sunrise can start to interfere by around 5:45 or so.  This image was captured for 30 seconds at f/4, ISO 6400 at 200mm focal length on a Canon 5D Mark II camera, using a tracking mount.  On the astronomical brightness scale the comet's current brightness of 6 or so is brighter than the threshhold for naked-eye visibility of approximately 8, but I can't make it out well until I take a wide angle shot to find it in the sky, then gradually zoom in from there until I've reached maximum focal length for the lens.
#astronomy   #science   #astrophotography  

Comet C/2013 R1 Lovejoy on Saturday morning 1/4/2013. Captured for 30 seconds at f/4, ISO 6400 at 200mm focal length on a Canon 5D Mark II camera, using a tracking mount.

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Jeff Sullivan

Jeff Sullivan leads landscape photography workshops in national parks and public lands throughout California and the American West.

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