Engineers and scientists are continuing with testing and characterization activities for the NASA Spitzer Space Telescope warm mission, a process that began after Spitzer's cryogen ran out on May 15.

On June 15, a software patch was loaded onto the spacecraft. The patch was designed to allow scientists to control the temperature of Spitzer's infrared array camera — the instrument that will still function during Spitzer's warm mission. Onboard tests confirmed that the patch works as expected. The camera arrays were stepped through a range of temperatures that includes the expected equilibrium temperature of the observatory.

All systems on the spacecraft are healthy and functioning normally.