See the orginal lightmeter wiki

Models / Sources

This section provides links and sources of models and other useful data for calibration purposes of the Lightmeter.

Reference Solar Irradiance Spectra (ASTM E490): http://rredc.nrel.gov/solar/spectra/
Air mass: Fritz Kasten and Andrew T. Young, Applied Optics, Vol. 28, Issue 22, pp. 4735-4738 (1989), Revised optical air mass tables and approximation formula
Extinction model: Hayes, D. S. and Latham, D. W., Astrophysical Journal, vol. 197, p. 593-601 (1975), A rediscussion of the atmospheric extinction and the absolute spectral-energy distribution of VEGA
Wavelength dependent extinction coefficients for La Silla observatory: http://www.eso.org/sci/observing/tools/Extinction.html
Photopic and Scotopic functions: http://cvision.ucsd.edu/
Radiometry and photometry in astronomy with examples: http://www.stjarnhimlen.se/comp/radfaq.html
Lunar Irradiance model: http://www.moon-cal.org/index.php, see also: Kieffer et al., The Astronomical Journal, Volume 129, Issue 6, pp. 2887-2901, The Spectral Irradiance of the Moon

Calibration