Publications

de

L'observatorie Astronomique de L'université

de Tartu (Dorpat)

Tome XXVI

NºNº 1-7 (1924-1928)

Nº 1. Photometric Measures on Moon and the Earth-Shine. By E. Öpik. (PDF)

Nº 2. Stellar Distribution and the Law of Chance, with a special discussion of the  Paris Carte-du-Ciel Zone δ = +24º. By E. Öpik, aided by Miss M. Lukk. (PDF)

Nº 3. Determination of Colour-Equivalents of Stars According to Tikhoffs Method, with some considerations concerning the relation of colour to absolute magnitude and spectrum. By E. Öpik, aided by R. Livländer. (PDF)

Nº 4. On the Frequency of Proper Motions of Stars, as derived from the Johannesburg and Helsingfors Blink-Microscope Observations. By E. Öpik. (PDF)

Nº 5. Measures of Double Stars (1924-1926). By E. Öpik. (PDF)

Nº 6. The Solar Eclipse of June 29, 1927. E. Öpik. (PDF)

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Nº 7. Determination of the Longitude of Tartu Observatory by Wireless. First paper: observations with the old Dollond transit instrument in 1927. By R. Livländer. (PDF)

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