Editing Cosmic Background Explorer (section)

==== Diffuse Infrared Background Experiment (DIRBE) ====
The Diffuse Infrared Background Experiment (DIRBE) consists of a cryogenically cooled (to 2 K) multiband radiometer used to investigate diffuse infrared radiation from 1 to 300 micrometres. The instrument measures the absolute flux in 10 wavelength bands with a 1° field of view pointed 30° off the spin axis. Detectors ([[Photoconductivity|photoconductors]]) and filters for the 8 to 100 micrometre channels are the same as for the [[IRAS]] mission. [[Bolometer]]s are used for the longest wavelength channel (120 to 300 micrometres). The telescope is a well baffled, off-axis, Gregorian flux collector with re-imaging. The instrument weighs approximately {{cvt|34|kg}}, uses 100 W and has a data rate of 1700 bit/s.<ref name="Experiment2">{{cite web |url=https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1989-089A-02 |title=Experiment: Diffuse Infrared Background Experiment (DIRBE) |publisher=NASA |date=28 October 2021 |access-date=27 November 2021}} {{PD-notice}}</ref>