Eisenhower 1954 Satillites 1

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based. The extensive photometry of distance indicators, such as Cepheids and novae, belonging to these nearby systems can be handled fairly well by photographic methods if the data are properly calibrated on a correct scale of magnitudes. For this purpose, very faint standard sequences have been established with the photon counter in three of the Kapteyn selected areas. W. Baade has already used these sequences, along with a revised Cepheid zero point, to estimate a new modulus for the...