Аскаплоты советских станций за 1980 год : (оперативно-информационный материал) / Акад. наук СССР, Кол. фил. им. С. М. Кирова, Поляр. геофиз. ин-т. – Апатиты : Кольский филиал АН СССР, 1984.

9 DESCRIPTION OP ASCAPLOTS. Introduction. The present iaaue contains auroral observational data obtained by all-sky earners»at ten Soviet stations during 1980, six are located in Arctic and four in Antarctic. The stations are enumerated in Table 1. The third column contains conventional designations of stations according to the agreement adopted during IGY /1,2/. The stations that did not operate during IGY obtained their designations in the same way compiling their ordinal numbers and three Latin letters denoting the name of the station. This refers to the stations with ordinal numbers following 115. Corrected geomagnetic coordinates calculated from Guatafsson's data /3/ and geographical coordinates are given in the 4th and 5th columns, respectively. The 6th column presents local geomagnetic midnight in UT for a given station. The last but one column contains the institutions running the observations, the last column gives the family name of the observer-in-chief. According to Moscow IAGA Assembly resolution of 1958 it is desirable when using ascafilms to refer to or to give the name of the person who obtained the ascafilms. Auroral data are presented by ascaplots as adopted at Moscow IAGA Assembly in 1958. The methods of ascaplotting were offered by V.Stoffregen who was the editor of two volumes of ascaplot data from the global network of stations, for 1957-1958 and 1958-1959 /1,2/. Separate publications with accaplots of Alaskian and Canadian networks of stations appeared occasionally. The ascaplots of Loparakaya station for 1970-1979 are published in "Auroral phenomena" by PGI. Auroral observational data of Soviet Arctio and Antarctic stations for 1972-1974 and 1977-1979 are published in /5-6/. Ascaplots help to obtain operative information about the time and place of aurorae observations and of some aurorae parameters. Moreover, identical presenta tion of data from different stations with a sufficiently large amount of observa tions allows to oarry out aoientifio research. For example, the first model of the auroral oval suggested by Feldstein /9/ was obtained from ascaplots of the global network of stations and was published in /1,2/. Instruments ana the program of observations. Observations at Soviet stations were carried out by all-aky cameras designed by Prof. A.I.Lebedinsky /8/. The optioal system of the instrument consists of two spherical mirrors and a camera working automatically from a command apparatus operated by a contact chronometer. She program of observations envisaged synchronous per minute filming with 20 s exposure oentered to thd zero seoond during the whole dark time when atmospher ic precipitation is absent. For aurorae ooouring in the zenith or in оавеof increase of aurora brightness up to 2 balls and more an additional 5 s exposure was turned on. Filming began and finished at the solar zenith angle 99°. In this case the stare of the second stellar magnitude are seen at the sky background. A patrol filming with 20 s exposure was made every 5 minutes during complete or partial cloudiness and aurorae absence. The observations on the Whole network of stations were run in Universal Time. Filming was oarrled out on the Soviet 35-mm KN-4 film. The sensitivity range of dynamic brightness of Soviet asoafllms equals to the order of two. Bach film has a standard sensitive wedge made by a FSH-4 sensitometer. All the negatives of the stations enumerated in Table 1 are kept in the Auroral Subsenter of the