00578nam a2200157Ia 4500003000900000008004100009040001600050080001700066110004500083245012400128260005900252300002300311650003200334650002100366650003300387IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a(035)52bIRA  aNational Optical Astronomy Observatories 0aIRAF user handbookbvol. 2B, user's guides/KPNO cookbookscNational Optical Astronomy Observatories                      aTucsonbNational Optical Astronomy Observatoriesc1989  a[various pagings.]  aAstronomy-Computer programs  aImage processing  aImaging systems in astronomy