Medicina

Medicina Radio Astronomical Station manage by the Italian National Institute for Astrophysics currently hosts two radio telescopes (with plans underway for the installation of a LOFAR 2.0 station):

  • The 32-m dish, built in 1983, is employed for both interferometric and single-dish observations. In the former case, it works with other antennas, located in different European or worldwide countries taking part in the EVN (European Very Long Baseline Interferometry Network) consortium.
  • The Northern Cross, completed in 1967 is conceived in order to receive radio waves with a central frequency of 408 MHz (73.5 cm in wavelength) with a 2.5-MHz bandwidth.
geographic longitude: 11° 38′ 49″
geographic latitude: 44° 31′ 15″
altitude above sea level: 28 m
diameter telescope: 32 m
 minimum elevation:  5°
diameter telescope (Northern Cross): 564 (EW) x 35 (NS) meter
 minimum elevation:  15°
 Note: The Northern Cross is a transit instrument and only has an azimuth range of +/-3°

Available observing mode: single dish, local interferometry, Very Long Baseline Interferometry (VLBI).

Frequencies currently used:

Frequency band Observing mode
10-90 MHz planned (LOFAR 2.0)
110-240 MHz planned (LOFAR 2.0)
400 – 416 MHz single dish
1350 – 1450 MHz single dish, VLBI
1595 – 1715 MHz single dish, VLBI
2200 – 2360 MHz single dish
4300 – 5800 MHz single dish, VLBI
5900 – 7100 MHz single dish, VLBI
8180 – 8980 MHz single dish, VLBI
13.5 – 18 GHz planned
18 – 26.5 GHz single dish, VLBI
18 – 26 GHz single dish, VLBI
34 – 50 GHz single dish, VLBI
80 – 116 GHz single dish, VLBI

Research programs:

VLBI: astronomy and geodesy, pulsar research and pulsar searches, at 22 GHz observations of H2O masers, molecular spectroscopy, receiver development.

Single-dish: spectrometry of water and methanol maser sources, sky surveys, flux variability of compact extragalactic sources, polarimetric observations of Galactic regions, planetary studies.

Committee on Radio Astronomy Frequencies