Cool Baade Dome
A Warm Person About to Wash the Mirror
Looking in Clay from Outside. The AO Secondary wasn't too warm.
The cool telescope and mirror
We're in the dark to a lot of the light around us. These images were taken with my Flir One infrared camera, which measures temperature using wavelengths around 10 microns. I'm an infrared astronomer by training, because infrared wavelengths let me study warm dust in places such as circumstellar disks.
The infrared lets us see places otherwise obscured
Las Campanas Landscape
Rocks heated by the Sun
Mirror Washing with Cold CO2