Optical:
- Airmass calculation and other useful tools
- Coordinate Transformation Library Documentation for SLALIB
- Coordinate-service from IceCube code also usable in ROOT
- Handbook of Space Astronomy and Astrophysics
- GLAST Technical
- Handbook of Astronomical Data Analysis
- Formulas and Useful quantities for Astrophysics
Astronomical Catalogues:
Optical and high level data analysis:
- Exposure of Sources
- IRAF image analysis tool
- Optical Magnitude and Related Definitions
- ctools scientific analysis of Cherenkov Telescope Array data