Drever, R. W. P. and Fruin, J. H. and Jelley, J. V. (1971) A precision sidereal telescope drive based on a solar time crystal clock. Observatory, 91 (984). pp. 203-205. ISSN 0029-7704. https://resolver.caltech.edu/CaltechAUTHORS:20160119-065145261
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Abstract
A requirement arose for a sidereal drive for a small microwave radiometer on an equatorial mount, the equipment to run unattended to a precision of about 2 minutes in hour angle over a 7-day period. The installation already included a solar-time crystal clock based on a IO MHz oscillator (type HCD 25), which through decade scalers could easily be arranged to operate a standard 50 Hz synchronous motor which would drive the mounting at one revolution per solar day. However, no suitable gearing was available to generate the required sidereal rate.
| Item Type: | Article | ||||||
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| Additional Information: | © 1971 The Observatory. Provided by the NASA Astrophysics Data System. | ||||||
| Issue or Number: | 984 | ||||||
| Record Number: | CaltechAUTHORS:20160119-065145261 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20160119-065145261 | ||||||
| Official Citation: | A precision sidereal telescope drive based on a solar time crystal clock Drever, R. W. P., Fruin, J. H., & Jelley, J. V. The Observatory, Vol. 91, p. 203-205 (1971) | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 63734 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Ruth Sustaita | ||||||
| Deposited On: | 19 Jan 2016 21:47 | ||||||
| Last Modified: | 03 Oct 2019 09:31 |
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