Diffuse Infrared Background Experiment (DIRBE)[1] was an experiment on NASA's COBE mission,[1] to survey the diffuse infrared sky. Measurements were made with a reflecting telescope with 19 cm diameter aperture.[1] The goal was to obtain brightness maps of the universe at ten frequency bands ranging from the near to far infrared (1.25 to 240 micrometer).[1] Also, linear polarization was measured at 1.25, 2.2, and 3.5 micrometers.[1] During the mission, the instrument could sample half the celestial sphere each day.[1]
"Near-infrared sky as seen by the DIRBE. Data at 1.25, 2.2, and 3.5 µm wavelengths are represented respectively as blue, green and red colors" - NASA
The Cosmic Background Explorer (COBE) mission was launched in November 1989. The spacecraft contained liquid helium that cooled the DIRBE instrument to below 2K to allow it to image in the infrared wavelengths. Primary observation started December 11, 1989 and ran until September 21, 1990, when the liquid helium ran out. After that date only observations in the 1.25 to 4.9 micrometer bands could be carried out, at about 20% of original sensitivity.[2]
The DIRBE instrument was an absolute radiometer with an off-axis folded-Gregorian reflecting telescope, with 19 cm diameter aperture.[1]
^ abcdefgRiccardo Giacconi, Daniela Calzetti, Mario Livio, Piero Madau, Space Telescope Science Institute (U.S.) - Extragalactic background radiation: a meeting in honor of Riccardo Giacconi : proceedings of the Extragalactic Background Radiation Meeting, Baltimore, 1993 May 18-20, Volume 1993 - Page 137 (Google Books accessed October 2010)
^"THE COBE DIFFUSE INFRARED BACKGROUND EXPERIMENT". Retrieved 26 February 2014.
diffuse, infrared, background, experiment, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, . This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Diffuse Infrared Background Experiment news newspapers books scholar JSTOR July 2009 Learn how and when to remove this template message Diffuse Infrared Background Experiment DIRBE 1 was an experiment on NASA s COBE mission 1 to survey the diffuse infrared sky Measurements were made with a reflecting telescope with 19 cm diameter aperture 1 The goal was to obtain brightness maps of the universe at ten frequency bands ranging from the near to far infrared 1 25 to 240 micrometer 1 Also linear polarization was measured at 1 25 2 2 and 3 5 micrometers 1 During the mission the instrument could sample half the celestial sphere each day 1 DIRBE instrument lightpath Contents 1 Mission details 2 See also 3 References 4 Other infrared surveys 5 External linksMission details edit nbsp Near infrared sky as seen by the DIRBE Data at 1 25 2 2 and 3 5 µm wavelengths are represented respectively as blue green and red colors NASA The Cosmic Background Explorer COBE mission was launched in November 1989 The spacecraft contained liquid helium that cooled the DIRBE instrument to below 2K to allow it to image in the infrared wavelengths Primary observation started December 11 1989 and ran until September 21 1990 when the liquid helium ran out After that date only observations in the 1 25 to 4 9 micrometer bands could be carried out at about 20 of original sensitivity 2 The DIRBE instrument was an absolute radiometer with an off axis folded Gregorian reflecting telescope with 19 cm diameter aperture 1 See also editCOBE DIRBE Infrared astronomy Cosmic infrared background List of largest infrared telescopesReferences edit a b c d e f g Riccardo Giacconi Daniela Calzetti Mario Livio Piero Madau Space Telescope Science Institute U S Extragalactic background radiation a meeting in honor of Riccardo Giacconi proceedings of the Extragalactic Background Radiation Meeting Baltimore 1993 May 18 20 Volume 1993 Page 137 Google Books accessed October 2010 THE COBE DIFFUSE INFRARED BACKGROUND EXPERIMENT Retrieved 26 February 2014 Other infrared surveys editIRAS 1983 WISE 2010 Nancy Grace Roman Space Telescope 2027 planned External links editNASA DIRBE Overview DIRBE data from here Portals nbsp Astronomy nbsp Stars nbsp Spaceflight nbsp Outer space nbsp Solar System Retrieved from https en wikipedia org w index php title Diffuse Infrared Background Experiment amp oldid 1145208925, wikipedia, wiki, book, books, library,
