The Princeton Equipment on Board

Details The Princeton Equipment on Board The Princeton Equipment on Board

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974rspsa.340..403d&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 340, Issue 1623, pp. 403-409

Statistics

Scientific paper

The Princeton telescope-spectrometer on the Copernicus satellite scans stellar spectra between 950 and 1450 angstrom in second order with a resolution of about 0.05 angstrom. The resolution in first order, between 1650 and 3000 angstrom, is twice that in second order. The equipment may be used down to a nominal limit of 5th magnitude with the photometric precision in second order limited only by the statistics of photon counts. At 1100 angstrom a rate of 103 per 14 s is obtained on an unreddened B1 star with mv = 5.0. In the first order phototube noise from cosmic rays limits observations to stars brighter than mv = 3.0 in general.

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