SOLAR RADIO NOISE REGISTRATIONS AT THE OSLO SOLAR OBSERVATORY, 1960-64.

Observations of solar radio noise has been made at the Oslo Solar Observatory since 1954. Until 1962 the observing frequency was 200 Mcs, but local interference then disturbed the measurements so heavily that a change of frequency was necessary. The measurements are now made on 225 Mcs. The equipment is operated from February 1 to November 30 each year. The mid-winter shut down is due to the low solar altitude less than 10 degrees at meridian passage ground reflections then are disturbing. This report contains the observational data for the period 1960-64 and is a continuation of report no. 12, in which the data for 1958-59 were collected. The description of the method of tabulation of data, which introduces the tables, is much the same as in the previous report. It is followed by a discussion of the measurements which show how the data compare with those of some other observatories.