The activities of the Astronomical Institute of the Slovak Academy of Sciences, Stará Lesná, in the program COSPAR devoted to the probelms of solar and stellar physics are ever more used satellite measurements, mainly in the UV, XUV and X-rays. It concerns mainly the satellites YOH-KOH, SOHO, TRACE and from previous ones NIMBUS 7, NOAA series, GOES series and the stellar IUE. By comparison of ground-based and space measurements we try to extend the satellite measurement series further to the past. Comparing the distribution of the intensity in the emission line 530.3 nm (the measurements from Lomnický ?tít), intensity in the continuum (the measurements using the Mark III coronagraph at Mauna Loa, but processed by software made by us) and in the X-rays (measurements from satellites Yoh-Koh and GOES) we came to the conclusion, that processes of ionisation, so the maximal radiation in lines as well, are concentrated in the regions of maximal gradient of the course of continual radiation and not in the regions of maximal electron density. Confirmation of this conclusion will lead to a revision of the theory of excitation of coronal ions. According to methods developed earlier we estimated from own observations and those made worldwide the coronal index of solar activity for years 1996-1998 and completed the catalouge of prominence for the same period. Analysing the all data (1939 - 1998) we realised some regularities in the course of the cycle of solar activity in the corona. [1-5]. Coordinated ground-based observation of the solar photosphere together with observations onboard the SOHO was carried out as well [4]. Results of these studies are used in searching connections between the solar activity and the geomagnetic disturbancies. [6]. For the analysis of the symbiotic star CH Cygni were used observations from the satellite IUE (ESA, NASA), [7].

The dynamical processes in solar corona were studied [8]. The North-South symmetry in the green corona was reported [9]. The coronal shape changes during the solar cycle were considered [10] and a new database of the green-line corona brightness was compiled for the five solar cycles [11]. Other papers relevant for COSPAR are listed in [12-44].

References.

1. Rybanský, M., V. Ru?in, M. Minarovjech : The green corona index and soft X-ray flux}, Sol. Phys. , 177, 305, 1998

2. Minarovjech, M., M. Rybanský, V. Ru?in : Prominences and the green corona over the solar activity cycles, Sol. Phys. 177, 357, 1998

3. Minarovjech, M., M. Rybanský, V. Ru?in.: Time-latitude Prominence and the Green Corona Distribution Over the Solar Activity Cycle, in: New Perspectives on Prominences, IAU Colloquium 167, eds. D.Webb, D.Rust, B.Schmieder, p. 484,1998.

4. Ku?era, A., J. Rybák, H. Woehl: Návrh spolo?ného pozorovacieho programu spektrografov VVT a SOHO pre sledovanie pohybov plazmy v rôznych vrstvách slne?nej atmosféry. In: Zbornik z 13. Celostatneho slnecneho seminara. Hurbanovo, SUH, 180, 1998.

5. Ru?in, V., M. Rybanský, M. Minarovjech: Emission corona and prominences over solar cycles}, in: Synoptic solar physics, eds. K.S. Balasubramaniam, J.W. Harvey, D.M. Rabin, p. 353, 1998.

6. Ru?in, V., M. Rybanský:Dynamics of the corona and its possible responses in the heliosphere}, in: Proceedings of the Third SOLTIP Symposium}, eds. X.S. Feng, F.S. Wei, M. Dryer, International Academic Publishers, p. 295., 1998

7. Skopal, A., A . Vittone, L. Errico, M.F. Bode, H.M. Lloyd, S. Tamura, : A photometric and spectroscopic study of the symbiotic binary BF Cyg, Mon. Not. R. Astron. Soc. 292, 703, 1997

8. Dorotovi?, I. Rybanský, M.: What should be the colour of the solar corona. Solar Phys., 172, 207-213, 1997.

9. Dzif?áková, E., V. Ru?in: The North-South asymmetry in the green corona. Studia geoph. et geod., 42, 101-111, 1997.

10. Sýkora, J. , P. Ambro?: A new understanding of the coronal shape changes during the solar cycle. In: Theoretical and observational problems related to solar eclipses. NATO ASI Series C: Mathematical and physical sciences, Kluwer Academic Publishers, Dordrecht, 494, 1997.

11. Sýkora J., M. Parisi: A new database of the green-line corona brightness as compiled for the five solar cycles and its possible utilization in the ISCS project. Astronomical and Astrophysical Transactions, 16, 75-80, 1998

12. Storini, M., S. Pase, J. Sýkora, M. Parisi: Two components of cosmic ray modulation, Solar Phys. 172, 317-325, 1997

13. Storini, M., J. Sýkora, J.: Coronal activity during the 22-year solar magnetic cycle', Solar Phys. 176, 417-430, 1997.

14. Storini, M., J. Sýkora: Even-odd solar-cycle differences of corona brightness,in: Scientific Papers 1995, ed. P. Bonifazi, Istituto di Fisica dello Spazio Interplanetario, CNR, Roma, pp. 208-226, 1997.

15. Storini, M., J. Sýkora: The green corona data: 1947-1976 re-visited, Nuovo Cimento 20 C, 923-931, 1997.

16. Storini, M., J. Sýkora: The heliomagnetic 22-year cycle as seen in the coronal brightness, in: Abstracts for the 8th Scientific Assembly of IAGA with ICMA and STP Symposia, eds. R. Bostrom, T. Carozzi, I. Arlefjard, A. Wahlberg, P.O. Dovner, Uppsala, pp. 423-424, 1997.

17. Sýkora, J., M. Parisi, M. Storini: Variabilities in distribution of the green corona brightness over the last five solar cycles, in: Solar-Terrestrial Prediction - V, eds. G. Heckman, K. Marubashi, M.A. Shea, D.F. Smartt, R. Thompson, Hiraiso Solar-Terrestrial Research Center, Communications Research Laboratory, Hitachinaka, pp. 165-168, 1997.

18. Sýkora, J., M. Parisi, M. Storini: Variabilities in distribution of the green corona brightness over the last five solar cycles, in: Workshop on Solar Flares and Related Disturbances, eds. E. Sagawa, M. Akioka, Hiraiso Solar Terrestrial Research Center, Hitachi, pp. 253-256, 1997

19. Sýkora, J., M. Storini: Solar corona irradiance variability and cosmic rays, J. Geomag. Geoelectr. 49, S31-S37, 1997

20. Sýkora, J., M. Storini: A simple-minded concept of the even and odd solar cycles is physically relevant, Hvar Observatory Bulletin 21, 21-32, 1998.

21. Massetti, S., Storini, M., Sýkora, J.: On the new data set from the Homestake experiment, Contrib. Astron. Obs. Skalnate Pleso 28, 37-50, 1998.

22. Storini, M., J. Sýkora, J.: Koronalnaja aktivnost v chetnykh i nechetnykh tsiklakh, Izvestija AN, Seria fizicheskaja 62, 1249-1250, 1998.

23. Sýkora, J., M. Parisi: A new database of the green-line corona brightness as compiled for the five solar cycles and its possible utilization in the ISCS project, Astronomical and Astrophysical Transactions 16, 75-80, 1998.

24. Storini, M., M. Jakimiec, A. Antalová, J. Sýkora: Cosmic ray modulation versus corona variability during the maximum phase of the 11-year cycle, in: 26th International Cosmic Ray Conference, Vol. 7, Contributed Papers, eds. D. Kieda, M. Salamon, B. Dingus, IUPAP, Salt Lake City, pp. 151-154, 1999.

25. Badalyan, O.G, M. A. Livshits, J. Sýkora, J.: Polarizatsionnye nabljudenia solnechnoj korony v zelenoj linii i ikh interpretatsia, Astron. Zh. 74, 767-778, 1997.

26. Badalyan, O.G., Livshits, M.A., Sýkora, J.: 1997, `Green-line polarization observations of the solar corona and their interpretation', Astronomy Reports 41, 682-692.

27. Badalyan, O.G., M. A. Livshits, J. Sýkora: Results of polarization observations of the white-light corona, in: Theoretical and Observational Problems Related to Solar Eclipses, NATO ASI Series C: Mathematical and Physical Sciences - Vol. 494, eds. Z. Mouradian, M. Stavinschi, Kluwer Academic Publishers, Dordrecht, pp. 11-14, 1997.

28. Badalyan, O.G., M.A. Livshits, J. Sýkora:White-light polarization and large-scale coronal structures, Solar Phys. 173, 67-80, 1997.

29. Badalyan, O.G., J. Sýkora: Polarization of the 530.3 nm coronal line as observed on July 11, 1991, in: Theoretical and Observational Problems Related to Solar Eclipses, NATO ASI Series C: Mathematical and Physical Sciences - Vol. 494, eds. Z. Mouradian, M. Stavinschi, Kluwer Academic Publishers, Dordrecht, pp. 25-29, 1997.

30. Badalyan, O.G., J. Sýkora: Polarization of the green-line corona on July 11, 1991 solar eclipse, Astron. Astrophys. 319, 664-668, 1997.

31. Badalyan. O.G., M.A. Livshits, J. Sýkora: Anticorrelation between degree of polarization and intensity of the FeXIV 530.3 nm coronal emission line, in: Abstracts for the 8th Scientific Assembly of IAGA with ICMA and STP Symposia, eds. R. Bostrom, T. Carozzi, I. Arlefjard, A. Wahlberg, P.O. Dovner, Uppsala, pp. 408-409, 1997.

32. Badalyan, O.G., M.A. Livshits, J. Sýkora: Antikorrelatsia mezhdu polarizatsiej zelenoj koronalnoj liniii jejo intensivnostju, in: Novyj tsikl aktivnosti Solntsa: nabljudatelnyj i teoreticheskij aspekty. Trudy konferentsii, posvjashchennoj 50-letiju Gornoj Astronomicheskoj Stantsii GAO RAN, eds. V.I. Makarov, V.N. Obridko, Glavnaja (Pulkovskaja) Astronomicheskaja Observatorija RAN, Sankt Peterburg, pp. 7-10, 1997.

33. Badalyan, O.G., V.N. Obridko, J. Sýkora: Svjaz polarizatsii i intensivnosti zelenoj linii so strukturoj koronalnykh magnitnykh polej, in: Novyj tsikl aktivnosti Solntsa: nabljudatelnyj i teoreticheskij aspekty. Trudy konferentsii, posvjashchennoj 50-letiju Gornoj Astronomicheskoj stantssi GAO RAN, eds. V.I. Makarov, V.N. Obridko, Glavnaja Astronomicheskaja Observatorija RAN, Sankt Peterburg, pp. 11-13, 1998.

33. Badalyan, O.G., J. Sýkora: Rezultaty polarizatsionnykh nabljudenij zatmenia 11 ijulja 1991 g. v zelenoj linii, Izvestija AN, Serija fizicheskaja 62, 1225-1228, 1997.

34. Sýkora, J., P. Ambro?, M. Minarovjech, V.N. Obridko, T. Pinter, M. Rybanský: White-light polar plumes from three "minimum-like" solar eclipses, in: Solar Jets and Coronal Plumes, ESA SP-421, ed. T.-D. Guyenne, ESA/ESTEC, Noordwijk, pp. 79-86, 1998.

35. Badalyan, O.G., G.V. Kuklin, V.N. Obridko, J. Sýkora: Dinamika rezhimov svechenia zelenoj korony v tsiklakh 18-22, in: Krupnomasshtabnaja struktura solnechnoj aktivnosti: dostizhenia i perspektivy, eds. V.I. Makarov, V.N. Obridko, Rossijskaja AN, Sankt-Peterburg, pp. 5-10. (Translation of the title: Dynamics of the regimes of the green line radiation in the cycles 18-22.), 1998.

36. Badalyan, O.G., M.A. Livshits, V.N. Obridko, J. Sýkora: Rol koronalnykh magnitnykh polej v obrazovanii polarizovannogo izluchenia v zelenej linii, Izvestja RAN 63, 2196-2200, 1999.

37. Badalyan, O.G., M.A. Livshits, M.A., J. Sýkora: Polarization in the green line as a source of information about coronal magnetic fields, in: High Resolution Solar Atmospheric Dynamics, Boston, 1999.

38. Badalyan, O.G., M.A. Livshits, J. Sýkora: Relationship between polarization and intensity of the green line in different coronal structures, Astron. Astrophys. 349, 295-300, 1999.

39. Badalyan, O.G., V.N. Obridko, J. Sýkora: Direction of the green line polarization and the coronal magnetic field', Astron. Astrophys., in press.

40. Badalyan, O.G., V.N. Obridko, J. Sýkora: Polarizatsia v zelenoj linii i koronalnye magnitnye polja', Astron. Zh. 76, 869-880, 1999.

41. Badalyan, O.G., V.N. Obridko, J. Sýkora: Relationship between the green-line corona polarization and coronal magnetic fields, in: Solar Polarization, eds. K.N. Nagendra, J.O. Stenflo, Kluwer Academic Publishers, Dordrecht, pp. 373-381, 1999.

42. Sykora, J., Badalyan, O.G., Livshits, M.A.: 1999, `Coronal polarization from the solar eclipse observations', in: Solar Polarization, eds. K.N. Nagendra, J.O. Stenflo, Kluwer Academic Publishers, Dordrecht, pp. 363-371.

43. Sýkora, J., O.G. Badalyan, V.N. Obridko, T. Pinter: Structure and magnetic field of the July 11, 1991 eclipse corona from the solar cycle viewpoint, Contrib. Astron. Obs. Skalnate Pleso 29, in press.

44. Sýkora, J., O.G. Badalyan: Space-time distribution of the green corona brightness in the cycles 18-22 in: Large scale structure of solar activity (in Russian) eds. V.I. Makarov, V.N. Obridko, RAN, S.-Peterburg, pp. 269-274, 1999.