#contents * nasa extragalactic database [#j4d70453] http://ned.ipac.caltech.edu/ * database of molecules and atoms [#rcb45dd3] http://www.strw.leidenuniv.nl/~moldata/ http://www.nist.gov/pml/data/micro/index.cfm * flux/magnitude converter [#i094d476] http://archive.eso.org/apps/mag2flux/ * atmospheric transmission [#q0ad05c0] http://www.submm.caltech.edu/cso/weather/atplot.shtml * sensitivity calculators [#c15c0a72] http://www.eso.org/sci/facilities/alma/observing/tools/etc/ * multi-wavelengths data [#h6b09fc2] http://skyview.gsfc.nasa.gov/cgi-bin/query.pl http://www.cv.nrao.edu/nvss/postage.shtml http://smoka.nao.ac.jp/search.jsp http://aladin.u-strasbg.fr/aladin.gml * calibrators [#e646ecc3] http://sma1.sma.hawaii.edu/callist/callist.html