General Reference

  • Preprint Server
  • Astrophysics Data System
  • NASA/IPAC Extragalactic Database (NED)
  • Astronomy reference books and reviews
  • Cosmology books and reviews
  • Image Processing
  • Probability and Statistics
  • Data Analysis Methods
  • Math and Computer Sci. Methods

    Manuals / Cheat sheets

  • FITS & WCS Tools
  • Astro Tool Tips
  • IPAC SkyView
  • The GNU C Library
  • GNU Scientific Library
  • "R" programming tips
  • R - Reference Card
  • PDL Reference Sheet

    Mathematics / Physics

  • Wolfram's MathWorld
  • MathPages
  • Mathematical Software
  • Physics FAQ's
  • Feynman Lectures on Physics