========================================================================== VIII/61 NAIC 611 MHz Survey Source List (Durdin+ 1975) The following files can be converted to FITS (extension .fit .fgz or .fiZ) table2.dat table3.dat ========================================================================== Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=VIII/61 ==========================================================================
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Beginning of ReadMe : VIII/61 NAIC 611 MHz Survey Source List (Durdin+ 1975) ================================================================================ The NAIC 611 MHz Multi-beam Sky Survey Source List Durdin J.M., Pleticha D., Condon J.J., Yerbury M.J., Jauncey D.L., Hazard C. <National Astronomy and Ionosphere Center Report No. 45 (1975)> ================================================================================ ADC_Keywords: Radio sources Description: The 1000 foot Arecibo reflector was used with a multiple feed system to map the region 0h < RA < 12h, -2d < DEC < +18d at 611 MHz. The observations were made in meridian transit mode using an array of ten line feeds with the electric polarization vector in the east-west plane. The beam power pattern of each feed was approximately Gaussian and circulary symmetric with a half power beam width of about 12.6 arcmin. A source list was produced containing fluxes and positions of 3118 radio sources stronger than 0.35 Jy. The source list is complete for strong, unresolved sources. However it is not intended to be complete for objects highly resolved by the 12.6 arcmin beamsize. The list's lower limit of 0.35 Jy is about 5 times the average sky confusion. The survey was calibrated to the KPW (Kellermann, Pauliny-Toth, and Williams 1969ApJ...157....1K) flux scale. The secondary calibrators were ten sources measured at Arecibo at 606 MHz based on the KPW scale (Condon, Niell and Jauncey 1971). Marked by an asterisk in Table 2, these sources were too few to be used alone to calibrate all of the declination strips. Since a more complete list of good calibration sources did not exist at 611 MHz, the fluxes of 159 additional sources were independently measured accurate to about 7 percent at Arecibo in the Fall of 1973. Table 2 gives their assigned fluxes. These sources were tied to the KPW scale through the ten secondary calibrators.