The Whole Earth Blazar Telescope (WEBT) is a network of optical and radio observers who in concert have the capability to obtain continuous, high-temporal-density monitoring of blazars. WEBT is based on the website of Astronomical Observatory of Torino.
A network on Blazar research, funded by the European Commission through the TMR (Training and Mobility through Research) program at the University of Heidelberg website.
A team of Finnish astronomers at Tuorla Observatory has used the very high imaging qualities of the Nordic Optical Telescope, and made a very careful subtraction of the central source in order to reveal the underlying galaxy or galaxies in each of one hundred BL Lac galaxies they examined.
A catalog of 157 X-ray spectra and the broad-band Spectral Energy Distribution (SED) of 84 blazars observed by BeppoSAX - European X-ray astronomy satellite - during its first five years of operations. Provided by Science Data Center of Italian Space Agency.
