Clickworkers training: Crater Marking

Mars Clickworkers

Your task:
Mark all craters
(training -- click here to do a real one)

This image is one of tens of thousands of images that we are asking volunteers to examine and identify craters in.

Pick a crater and click at a point on its rim.

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Here’s an Undo button ———>

Your task, should you choose to accept it: Click on four points around the rim of each crater. You may ignore craters that are smaller than this:

When you are finished, click here to be assigned a real task.

NASA

Ames Research Center

Clickworkers pilot study
Kanefsky/Barlow/Gulick
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