## Franz Ignaz Cassian Hallaschka and his book “Elementa Eclipsium”.(English)Zbl 0959.01024

On occasion of the total solar eclipse of August 1999, the author tells in $$2{1\over 2}$$ pages about the life of the Moravian astronomer Hallaschka (1780-1847) and in particular about his Elementa eclipsium from 1816, which contained calculations of solar eclipses for the years 1816-1860 (with an atlas of eclipses going until 1910) and whose method to some extent anticipated that of Bessel. Two notes of slightly less than a page each list a selection of Hallaschka’s publications and the instruments of his observatory. Many diagrams from the Elementa are reproduced. No sources are given for the biographical information.

### MSC:

 01A70 Biographies, obituaries, personalia, bibliographies 85-03 History of astronomy and astrophysics

### Keywords:

Hallaschka; eclipse calculations

### Biographic References:

Hallaschka, Franz Ignaz Cassian
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