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- W84862695 abstract "Supernovae are astrophysically extremely interesting objects. It is presently believed that most, if not all, heavy elements are created when stars explode as supernovae. About ten supernovae are presently discovered each year and much thought has been given to the problem of discovering new supernovae as early as possible after the rise in luminosity, in order to study the physics of such objects in their initial phases. Dr. Andre Muller from ESO has conceived many ingenious technical solutions to a wide variety of problems. In this article, he describes a new device for the quick and efficient detection of supernovae with the ESO 1 m Schmidt telescope. The results of the first practical tests of this method will soon be available. While investigating the possibility to start a routine supernova search programme with the ESO 1 m Schmidt camera, it soon became clear that it was all-i mportant to fi nd an efficient and economic observational method with a minimum of waste of time and photographic material. For many reasons the study of supernovae is a very important subject. However, to be able to observe newly-discovered supernovae with medium-size telescopes equipped with photometers and spectrographs, they must be rather bright, and it was therefore decided to search only for stars apparently brighter than the fifteenth magnitude. This decision once taken, the question then arose how one can photograph a great number of galaxies in an economic way with a Schmidt camera. After some thinking, a viable solution was found in the form of a double diaphragm device which divides the 30 x 30 cm photographic plate into a number of circular zones and each circular zone into a number of sectors. How this is done can be seen in the drawing. The utilization diagram shows one ofthe possible ways of dividing the photographic plate. In this special case the plate is divided" @default.
- W84862695 created "2016-06-24" @default.
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- W84862695 date "1979-12-01" @default.
- W84862695 modified "2023-10-18" @default.
- W84862695 title "A supernova search with the ESO 1 m Schmidt telescope: greatly improved efficiency." @default.
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