Dave Bullock / eecue

photographer, director of engineering: crowdrise, photojournalist, hacker, nerd, geek, human

Larry Shrader holding a Feed Horn

Larry Shrader holding a Feed Horn
Larry Schrader, the chief technician for the DSN's maser lab, holds a feed horn, a hollow aluminum tube that is used to focus the extremely weak signals from the antenna into the maser for amplification. The horn is capped with capton (which is similar to mylar) and filled with pressurized nitrogen to keep the moisture out of the tube.