Signal-to-noise ratio for the wide field-planetary camera of the Space Telescope

Details Signal-to-noise ratio for the wide field-planetary camera of the Space Telescope Signal-to-noise ratio for the wide field-planetary camera of the Space Telescope

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8435235z&link_type=abstract

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Computer Science

Performance

Ray Tracing, Signal To Noise Ratios, Spaceborne Telescopes, Cameras, Charge Coupled Devices, Performance Prediction, Spectrum Analysis, Wide Angle Lenses

Scientific paper

Signal-to-noise ratios for the Wide Field Camera and Planetary Camera of the Space Telescope were calculated as a function of integration time. Models of the optical systems and CCD detector arrays were used with a 27th visual magnitude point source and a 25th visual magnitude per arc-sq. second extended source. A 23rd visual magnitude per arc-sq. second background was assumed. The models predicted signal-to-noise ratios of 10 within 4 hours for the point source centered on a signal pixel. Signal-to-noise ratios approaching 10 are estimated for approximately 0.25 x 0.25 arc-second areas within the extended source after 10 hours integration.

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