Research links.

This is of course nothing near a comprehensive list! It exists for my convenience ... what that means is: it only includes links to datasets that I am using, or have used, for various projects (including projects that aren't done yet).

• 2dF Quasar Survey.
• SDSS. 5-band imaging from 0.32-1.1 microns; of order 10⁶ spectra.
• 2SLAQ. Luminous red galaxies and quasars selected from SDSS imaging, observed spectroscopically with 2dF.
• 2MASS. The 2 micron all-sky survey.
• SFD dust maps. The current standard for maps of the Galactic dust (used for extinction in the optical and emission in far-IR/microwave).
• LAMBDA. Microwave astronomy data (WMAP, COBE, etc.)
• NVSS. Most of the sky surveyed down to a few millijanskies at 1.4 GHz.

Math.

• GSL. A useful suite of mathematical routines.
• Numerical Recipes. Also useful, and with books actually explaining this stuff.

• CFITSIO. Preferred interface to FITS format files.

• Gnuplot. Plotting program that is useful especially to tie into scripts.
• DS9. Good for displaying FITS images, etc.

• MANGLE. Code to handle weird-shaped masks, window functions, etc.
• Healpix. A widely-supported pixelization for the celestial sphere, used for WMAP data.