Useful links to Active Galaxies and AGN related information

• NASA Extragalactic Data Base
• STScI Digitized Sky Survey
• APM Catalogue
• NASA's Virtual Observatory, which includes the NVSS and FIRST as well as 2MASS, DSS and ROSAT surveys
• Radio Galaxy M87

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Of general use is Martin Zombeck's Handbook of Space Astronomy and Astrophysics

More to come ........