IRAF user handbook  vol. 2B, user's guides/KPNO cookbooks 
National Optical Astronomy Observatories                     
 - Tucson  National Optical Astronomy Observatories  1989 
 - [various pagings.] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy-Computer programs<br/>Image processing<br/>Imaging systems in astronomy
<br/><br/><label>Universal Decimal Class. No.: </label>(035)52  / IRA