Note on Solar Radio Observations in Cracow


The entire solar-disk observations are carried out daily at the Astronomical 
Observatory of the Jagellonian University in Cracow.  The observations made 
with the 7 m single-dish radiotelescope at two frequencies: 810 MHz and 
430 MHz were initiated on October 1, 1957 and March 1, 1966, respectively. 
Since 1980 the results of these observations have been published monthly in 
Monthly Report on Solar Radio Emission.  Some previous observations have been 
published in the Acta Astronomica (see: Zieba S. 1973, 23, 159; Gula R. and 
Zieba S. 1975, 25, 427; Zieba S., Gula R. and Michalec A. 1976, 26, 35; 
Zieba S., Jaszczewska M. and Michalec A. 1982, 32, 93; Zieba S., Michalec A.
and Hankus M. 1986, 36, 219; Zieba S., Chyzy K. and Michalec A. 1993, 43, 
259; and references therein) together with details of the instrument. In 1993 
we begun to reconstruct our receiver system and now a new 8 m antenna is also 
built. At present, we observe at 6 frequencies:

       410, 650, 810, 980, 1350, 1450 MHz in dcm wavelengths region.

The daily schedule of the observations is as follows:
08 50 to 09 00 - calibrations and background measurements
09 01 to 12 00 - observation of solar radio emission
12 01 to 12 10 - calibrations and background measurements
12 11 to 15 00 - observation of solar radio emission
15 01 to 15 10 - calibrations and background measurements


The above hours are given in Central European Standard or Summer Time, that 
the Sun is observed from 08 to 14 UT or from 07 to 13 UT depending on the 
season of the year. The data are presented in generally in accepted form for 
Solar Radio Observations.

At present, the observations are made by Dr. A. Michalec, M. Niesulowski,
M. Sc. M. Rys, Dr. S. Zieba.  Besides, Dr.S. Zieba, M. Niesulowski,
A. Michalec, and M. Gierlinski are also responsible for data reduction and 
Dr. J. Machalski and Dr. A. Kulak - for proper running operation of the 
receiver and antenna system. The report is made by Dr. A. Michalec. Leading 
person in Solar Radio Group is Dr. S. Zieba (stanz@oa.uj.edu.pl) and all 
questions connected with the data should be addressed to him.


These daily solar radio flux data are available on line at the web site
http://www.oa.uj.edu.pl:80/sol/.