Data Hosted on LAMBDA

Below is a list of CMB experiments, with links to internal LAMBDA pages which provide the publicly available data from these experiments. LAMBDA serves as a long-term repository for these archives. If an experiment of interest to you is missing from the list, or there is experimental data you would like to provide, please contact us via the suggestion form. A discussion of the polarization convention used in the datasets can be seen at our polarization convention page.

Cosmic Microwave Background Anisotropy Experiments

ACT Atacama Cosmology Telescope (Temperature and Polarization)
BICEP2/Keck Background Imaging of Cosmic Extragalactic Polarization 2/Keck Array
Planck Planck Mission
POLARBEAR POLARization of Background microwave Radiation
QUIET Q/U Imaging ExperimenT
SPT South Pole Telescope (Temperature and Polarization)
WMAP Wilkinson Microwave Anisotropy Probe

Cosmic Microwave Background Spectrum Experiments

ARCADE Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission
COBE-FIRAS Cosmic Background Explorer

Simulations and value-added

CMB simulations High Resolution Microwave Full Sky Simulations


CHIPASS CHIPASS 1.4 GHz Continuum Map
H-alpha Composite all-sky H-alpha map derived from 3 surveys.
HASLAM Reprocessed 408 MHz radio continuum all-sky map of Haslam et al.
LAB HI Composite all-sky N(HI) map derived from the Leiden/Dwingeloo survey.
FDS dust Predicted dust map at 94 GHz.
WMAP source catalog Catalog of WMAP point sources.


COBE-DIRBE Cosmic Background Explorer
IRAS Infrared Astronomical Satellite
SWAS Submillimeter Wave Astronomy Satellite

Legacy Cosmic Microwave Background Anisotropy Experiments

ACBAR Arcminute Cosmology Bolometer Array Receiver
Archeops Archeops
BICEP1 Background Imaging of Cosmic Extragalactic Polarization
BOOMERanG Balloon Observations Of Millimetric Extragalactic Radiation and Geophysics
CAPMAP Cosmic Anisotropy Polarization MAPper
CBI Cosmic Background Imager
COBE-DMR Cosmic Background Explorer
DASI Degree Angular Scale Interferometer
MAXIMA Millimeter Anisotropy eXperiment Imaging Array
MSAM Medium Scale Anisotropy Measurement
QMAP Q-band mapper
QMASK QMAP and Saskatoon (SK) Data Combination
QUaD QUEST (Q and U Extra-Galactic Sub-mm Telescope) and DASI (Degree Angular Scale Interferometer)
VSA Very Small Array
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