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Figures (2)

Fig. 1
Fig. 1

Percentage energy that falls in a circle vs diameter of the circle expressed in seconds of arc for the Catalina Observatory metal mirror photometric telescopes, 60–A and 60–B.

Fig. 2
Fig. 2

Photograph of the planet Saturn taken with the second Catalina Observatory 153-cm. photometric telescope (60–B) using the full 153-cm. aperture. The diameter of the planet at the time of the photograph was 17.6 sec of arc.