How Far Will You Go for a Trackable?

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How Far Will You Go for a Trackable?

Trackables are fun to find in a geocache, or trade at events. But, did you know that there is a trackable on the surface of Mars? NASA scientists came up with the idea for including a trackable on the Mars Perseverance Rover. Printed on a glass disk, it is a calibration target for the rover’s WATSON camera to focus on. When you log the trackable, you’ll earn a souvenir. Lucky for us, we don’t need to leave home to get a glimpse of this trackable.

How to log the trackable

  • Go to the NASA Raw Images page
  • Filter for images taken by the WATSON camera (filter by SHERLOC Context Imager)
  • Find the trackable code in the image
  • Log the trackable on geocaching.com

If you are a fan of Sherlock Holmes, you may appreciate some subtle references on the calibration disk. Which ones can you find?

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