OPTICAL-IDENTIFICATION OF THE OBJECTS OF RC AND UTRAO CATALOGS ON ENLARGED PALOMAR SKY ATLAS PRINTS

Two hundred forty radio sources that are common for RC and UTRAO catal ogs were identified on the enlarged prints of the Palomar Sky Atlas. I t is shown that in the centimeter waverange the number of identified r adio sources with flux density between 15 and 300 mJy drops with decre ase of flux density. The number of unidentified sources grows with spe ctral index. For double-lobed radio sources we give estimates of redsh ifts and expected X-ray fluxes.