7 pages matching readings 6A in this book
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INSTRUMENT PERFORMANCE AND EXPOSURE TIME CALCULATIONS
DEFINING THE OBSERVING PROGRAM
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32 readings 6A and 6B aberration angular apparent magnitude apparent visual magnitude arcmin astrometric observations astrometric reference stars astrometry FGS averaging time FES-TIME bandpass beam splitter binary system bright Camera clear filter close binary coarse track correction count rate counts per second counts/sec Data Reduction determined diameter differential astrometry double star entrance pupil Equation estimated exposure FGS aperture FGS axis FGS FOV FGS pickle FGSs filter wheel gnomonic Guidance Sensor Guide Star HIPPARCOS HST focal plane Hubble Space Telescope interferometer axes interferometer space jitter kbps Koesters least significant bit mean value measurement moving targets neutral density filter observing sequence open clusters orientation parallax parameter photon noise plate scale PMTs POS mode POSition mode prism proper motion proposal forms readings 6A reduced requested rotations scan selector encoder readings sequence of observations spacecraft specific star selector encoder stellar target direction TRANS mode TRANS/MOVING mode Transfer Function Mode WF/PC zero crossing