A new timing device of satellite tracking camera with geodetic purpose.
For the photographic observations of an artificial satellite in geodesy, it generally needs to use cameras equipped with precise timing devices. Various timing devices being designed by some authors, they have not necessarily been satisfactory in handling facility, simplicity, high efficiency, and their price. Thus, the new timing device has been designed in view of the use of a simple equatorial camera. This device, in brief, is based on the following principle. A satellite trail is chopped by narrow metal slits passing by a photographic plate, while the serial position marks of the same slits are photographed by multiple flashing lights of a discharging flash lamp. The times when the satellite trail was chopped by the slits are determined through the relative positions between the chopped satellite images and the position marks of the slit plate corresponding to each flash time, while the flash times are read by a recording oscillograph with standard time signals. Using this device, the timing accuracy of 1 msec. will be expected. In this paper, details of the timing device are described and its error estimations are discussed with preliminary experiment.
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
1966
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| Online Access: | http://hdl.handle.net/1834/16396 |
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