Controlling a Telescope with a RasPi


Cristos Vasilas added a Raspberry Pi with camera board to his telescope, and took great video! My rPi camera board arrived from Element14 this week. I was anxious to get it connected to my rover, but once I saw the quality of the image it produced, I decided to use... Read more »

Scope Photography Rig


Quality cameras for microscope and telescope photography can run $500. But you can also use your family digital camera, attaching it to the eyepiece with a simple mount made from PVC pipe. Read more »

High-Resolution Spectrograph

Hi-Res Spectrograph

The first spectroscopes used glass prisms to split light into colors, but Fraunhofer found that an array of closely spaced wires had the same effect. Today we call these arrays of tiny slits diffraction gratings. Read more »

Listening to Satellites with a Homemade Yagi Antenna

yagi antenna

One of my favorite things to do is talk with other ham radio operators through satellites or the International Space Station (ISS). To do this, I stand on a rooftop and tune a handheld multiband radio while tracing the orbit of a satellite or the ISS with my homemade yagi... Read more »