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Calibrator Design for the COBE* Far Infrared Absolute Spectrophotometer (FIRAS)
The photometric errors of the external calibrator for the Far Infrared Absolute Spectrophotometer (FIRAS) instrument on the COBE are smaller than the measurement errors on the cosmic microwaveExpand
Structure in the COBE differential microwave radiometer first year maps
Results of the first year of data from the differential microwave radiometers on the Cosmic Background Explorer are presented. Statistically significant structure that is well described asExpand
Measurement of the Cosmic Microwave Background spectrum by the COBE FIRAS instrument
The cosmic microwave background radiation (CMBR) has a blackbody spectrum within 3.4 x 10(exp -8) ergs/sq cm/s/sr cm over the frequency range from 2 to 20/cm (5-0.5 mm). These measurements, derivedExpand
The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background. I. Limits and Detections
The Diffuse Infrared Background Experiment (DIRBE) on the Cosmic Background Explorer (COBE) spacecraft was designed primarily to conduct a systematic search for an isotropic cosmic infraredExpand
Four-Year COBE* DMR Cosmic Microwave Background Observations: Maps and Basic Results
In this Letter we present a summary of the spatial properties of the cosmic microwave background radiation based on the full 4 yr of COBE Differential Microwave Radiometer (DMR) observations, withExpand
The COBE Mission: Its Design and Performance Two Years after Launch
COBE, NASA's first space mission devoted primarily to cosmology, carries three scientific instruments to make precise measurements of the spectrum and anisotropy of the cosmic microwave backgroundExpand
Cosmic Black-Body Radiation
The Microwave Anisotropy Probe (MAP) Mission
The purpose of the MAP mission is to determine the geometry, content, and evolution of the universe via a 13 arc-min full-width-half-max (FWHM) resolution full sky map of the temperature anisotropyExpand
Cosmic temperature fluctuations from two years of COBE differential microwave radiometers observations
The first two years of COBE DMR observations of the CMB anisotropy are analyzed and compared with our previously published first year results. The results are consistent, but the addition of theExpand
Dipole Anisotropy in the COBE Differential Microwave Radiometers First-Year Sky Maps
We present a determination of the cosmic microwave background dipole amplitude and direction from the COBE Differential Microwave Radiometers (DMR) first year of data. Data from the six DMR channelsExpand