Abstract
BERNHARD H. DAWSON has a paper with the title, "Observaciones De Planetas y Cometas", published at the La Plata Astronomical Observatory, which deals with his observations during the years 1940–41 (Obs. Ast. Univ. Nac de la Plata, 6, No. 7). The work was carried out with the equatorial instruments of the Observatory, and the visual observations were effected with the filar micrometer of the refractor with aperture 433 mm., using a dark field illuminated with red light. A brief description of certain methods and precautions to ensure accuracy is given. On several occasions it was found necessary to use relatively faint stars as reference points owing to the limited field, but no difficulty was experienced in this procedure, thanks to the "Astrographic Catalogue".
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Work of the La Plata Astronomical Observatory. Nature 154, 495 (1944). https://doi.org/10.1038/154495a0
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DOI: https://doi.org/10.1038/154495a0