IRIS PHOTOMETRY OF 3C 273

IRIS PHOTOMETRY OF 3C 273

Twenty-seven blue plates of 3C 273 originally measured by Zwicky, Karpowicz, and Rudnicki using the Argelander method and measurement of image diameters have been remeasured on an iris photometer to improve their precision. These measures, including two later observations, have an accuracy ~±0ṃ1. So...

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Veröffentlicht in:Publications of the Astronomical Society of the Pacific 1976-04, Vol.88 (522), p.198-199
1. Verfasser: LANNING, HOWARD H.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomical magnitude
Astronomical photometry
Photometers
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Beschreibung
Zusammenfassung:Twenty-seven blue plates of 3C 273 originally measured by Zwicky, Karpowicz, and Rudnicki using the Argelander method and measurement of image diameters have been remeasured on an iris photometer to improve their precision. These measures, including two later observations, have an accuracy ~±0ṃ1. Some errors in the Julian day numbers given in the earlier study are corrected.
ISSN:0004-6280
1538-3873
DOI:10.1086/129925