Here is a recently trash-picked telescope from the sidewalks of Philly. The lenses were super dirty, but we put a Pi camera on the thing and could focus a semi-acceptable shot of a roof vent a block away. The Raspberry Pi camera is 10-megapixel with a manual focus that is very sensitive. You can get great shots with the camera, but dialing the focus takes time. The camera runs on a Raspberry Pi and posts wirelessly using a Drupal API and shell script.
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