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The Detection and Measurement of Faint Astronomical Sources
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accuracy amplifier aperture astronomical axis beam binary calibration camera cathode cent co-ordinates coefficients collimator color color index components computed constant corrections curve density dependence detector determined diameter diaphragm dispersion double stars dynode eclipsing effect electrons elements emission equation exposure extinction eyepiece factor field Figure filter focal length focal ratio focus formulae given grating infrared instrument intensity lens light limited linear lines magnitude measured method micrometer mosaic mounted noise objective observations Observatory obtained optical orbit orthicon parallax periastron photocathode photocell photoconductive photoelectric photographic emulsion photographic plate photometer photometry photomultiplier polarization position angle prism proper motion quantum efficiency radial velocity radiation ratio reduced reference stars relative right ascension rotation scale scanning sensitivity shot noise signal slit solution spectral spectrograph spectrophotometry spectroscopic spectrum star image stellar surface Table technique telescope temperature tion tube visual voltage wave length width zero