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A New-Star-Counting Device

Published online by Cambridge University Press:  12 April 2016

H. Tanabe  and
K. Mori
H. Tanabe
Affiliation:
Tokyo Astronomical Observatory
K. Mori
Affiliation:
Tokyo Astronomical Observatory

Extract

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Measurements of the magnitude distribution and integrated color of stellar fields in many parts of the sky by the star-counting method are important for studies of the structure of the Galaxy and the distribution of interstellar matter. On the other hand, in quantitative studies of the airglow and zodiacal light, we have to know the integrated brightness of the star field in order to subtract the background light from the measured light.

Up to the present, these star-counts have been made only for limited areas of the sky, since these measurements were made by using a reading microscope, and they would require much time and labor to extend the measurements to larger sky areas.

Type
Part III. Automated Measuring Equipment
Information
International Astronomical Union Colloquium , Volume 11: Automation in Optical Astrophysics , 1971 , pp. 173 - 178
Copyright
Copyright © Royal Observatory 1971

References

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