CMBMASTER ivo://nasa.heasarc/cmbmaster NASA/GSFC HEASARC LAMBDA; HEASARC 2026-06-19 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Experiment This table contains a list of known cosmic microwave background (CMB) experiments, with links to their home pages (if available), a brief description, some of the more important properties of the experiment, and, whenever possible, links to internal Legacy Archive for Microwave Background Data Analysis (LAMBDA: <a href="http://lambda.gsfc.nasa.gov/">http://lambda.gsfc.nasa.gov/</a>) 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 the LAMBDA team via the suggestion form at <a href="http://lambda.gsfc.nasa.gov/contact/contact.cfm">http://lambda.gsfc.nasa.gov/contact/contact.cfm</a>. The table contains links to the individual project websites, which will typically provide the most comprehensive collections of data. The data_type and lambda_data_link parameters contains descriptions of the type of data from the specified experiment that is available at LAMBDA, and the link to that data held at LAMBDA, respectively. Initially the data at LAMBDA might be a subset of the data at the project website, but the LAMBDA holdings will grow with time and they will be maintained as a permanent archive. Two of the listed LAMBDA data sets, namely those from the IRAS and SWAS satellites, are not, strictly speaking, directly related to the CMB, but, for historical reasons, are (partially in the case of IRAS, fully in the case of SWAS) located at LAMBDA. This table was created by the LAMDBA and HEASARC teams based on the Web page summary of CMB experiments at <a href="http://lambda.gsfc.nasa.gov/product/expt/">http://lambda.gsfc.nasa.gov/product/expt/</a>, as well as on other LAMBDA metadata. It is updated automatically within a day after any changes are made to that Web page. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/cmbmaster.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=cmbmaster GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_cmbmaster&Action=More+Options&Action=Parameter+Search&ConeAdd=1 MASTER CATALOG 0.0166666666666667 Infrared Radio public cmbmaster LAMBDA Cosmic Microwave Background Experiments Master Catalog experiment_link Link to the Website for the Experiment meta.ref.url char nullable full_name Full Designation of the Experiment meta.id char nullable lambda_data_link Link to the LAMBDA Page for Downloading Data meta.ref.url char nullable experiment_years Year(s) That Experiment Was Active time.epoch;obs char nullable status Status of Experiment meta.code.status char nullable l_min Minimum Accessible Spherical Harmonic Monopole l obs.param int nullable l_max Maximum Accessible Spherical Harmonic Monopole l obs.param int nullable detector_types Type(s) of Detector Used by Experiment char nullable polarization_flag Flag [YN] Indicates Polarization Measurement Capability meta.code;instr char nullable experiment_type Type of Experiment meta.note char nullable experiment_category Broad Category of Experiment meta.note char nullable name Short Designation of the Experiment meta.id;meta.main char nullable experiment_url URL of the Website for the Experiment meta.ref.url char nullable frequency_info Frequency or Frequencies Measured by the Experiment GHz em.wl;obs char nullable lambda_data_url URL for Downloading Data from LAMBDA meta.ref.url char nullable end_year Last Year of the Experiment (Ignore Month and Day) mjd time.end;obs int nullable frequency_min Minimum Frequency Measured by the Experiment GHz em.wl;stat.min;obs double nullable frequency_max Maximum Frequency Measured by the Experiment GHz em.wl;stat.max;obs double nullable data_type Type of Experimental Data meta.dataset char nullable experiment_id Unique LAMBDA Identifier for Each Experiment meta.id int nullable start_year First Year of the Experiment (Ignore Month and Day) mjd time.start;obs int nullable "__row" System index column char nullable