P

Parseval's Theorem 466 periodic error 94

correction (PEC) 97 photographic emulsions 11 photometric image profile 223 systems 279 photometry 221,271 photon flux 159 statistics 194 photon limited 49 pinhole camera 2 pixel 27

angular size 29 aspect ratio 23 pixel measurements pixel coordinates 206 pixel value 207 pixel statistics 212 pixel value 22 Planck's constant 2 planetary nebulae 521 plate coordinates 254 Pogson scale 272 Pogson, Norman 271 point operations 337 point-spread function 29

Poisson distribution 38 Poisson noise 488 polar alignment 113 power-law unsharp mask 393 precession 250 Prewitt operators 386 progressive-scan CCDs 17 proper motion 250

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