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Laser Trails and Star Trails

It was a long walk through the loose boulder fields and curtains of darkness to get to this location. I set up my camera, started it, walked halfway back to JCMT, and realized it was programmed to only shoot one photo. That's what 13,700 ft and a fair amount of sleep deprivation does to you... I hiked back and re-started it.

 

This is stacked from 80 30-second exposures around moonset. Keck II was running their adaptive optics system, and the 12-watt (!!!) laser was just barely visible to my dark-adapted eyes. The small trail between JCMT and CSO is from my headlamp as I set up a second camera for timelapse later on in the night.

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Uploaded on May 5, 2013
Taken on April 22, 2013