00521nam a2200181Ia 4500003000900000008004100009020001800050040001600068080001500084100002500099245006300124260004800187300001500235490003200250650002100282650002100303650001500324IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-00790-9  cIIA Library  a520.2bCOV  aCovington, Michael A 0aHow to use a computerized telescopescMichael A. Covington  aCambridgebCambridge University Pressc2002  axvi, 223p.  aPractical amateur astronomy  aAstrophotography  aTelescope optics  aTelescopes