November 2023 D-configuration

Each link in the list below presents scalar-averaged cross correlation spectra using several baselines in the D-configuration for each respective receiver band obtained in November 2023. The channel separation is 125 kHz. The antennas are pointed to the north celestial pole and away from known RFI sources. Hanning smoothing has been applied to minimize Gibbs ringing. The scale is logarithmic, in dB, with arbitrary offset. The scale can be roughly calibrated by noting that the mean power level is roughly equal to the antenna SEFD in Jy. There is no bandpass calibration, so the downturns at the edges are due to the analog and/or digital filters.

In addition, each link contains .CSV files. These files contain the values needed to plot Amplitude vs Frequency for the RR and LL correlations. Similar to the above, the values are scalar-averaged cross correlations, Hanning smoothing has been applied, and no bandpass calibration has been performed. The amplitudes are in Janskys calibrated using the system temperature of the antennas. Due to the gain compression effect the reported values are better thought of as lower limits than absolute fluxes of the RFI.

Connect with NRAO

The National Radio Astronomy Observatory and Green Bank Observatory are facilities of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.

Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.

The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."

AUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. We cultivate excellence, deliver value, enhance education, and engage the public.