Udaipur Solar Observatory ( USO )

In recent years, Solar Physics has been tremendously revitalised by radical developments of theoretical and observational techniques needed for the solution of a variety of fundamental problems. It has been possible to observe the Sun from space and to keep up with these developments the earth-bound observatories have tremendously improved their own observational methods and technologies. The theoreticians working on solar physics have now access to measurements covering almost the entire spectrum not only of electromagnetic radiations, but also particle radiations from the Sun. We now expect in near future several hitherto unresolved mysteries to be cleared up because of this massive data availability.
The solar chromosphere displays a number of colourful and exotic characteristics and plays a central role in the study of the Sun as a whole. Modern observations have suggested close links of the chromospheric phenomena with diverse phenomena, such as the solar wind and the deep lying convection zone responsible for supergranulations.  Chromosphere also provides a valuable testing ground for many aspects of hydro-dynamics and magneto-hydrodynamics.
The present Atlas is a compilation of solar chromospheric observations from the Udaipur Solar Observatory (USO) collected during the year 1976-1984.Temporal and spatial developments of a variety of chromospheric events are specifically described in this publication. These demonstrate development of active regions, mass ejections and flares etc. I hope that this catalogue of events observed from the USO and the photographic album of a variety of chromospheric events would be of great interest not only to the solar physicists, but also to the general astronomical community. Brief notes  along with the photographs will, we hope, greatly enhance the value of this volume and make it of interest also to amateurs in solar astronomy.