Never missing a chance to play with our IR camera, we hop outside and stack on the Constellation's visible-light filter to get a glimpse at the stars—or downtown San Luis Obispo.

The visible light filter restricts the light coming in to the image sensor to the IR spectrum, meaning the IR LEDs on the headband will shine bright like a diamond stars.

Even without the filter, there's plenty of infrared to see outside. That's why ordinary cameras need a filter, so they see what you see!