  TeV gamma rays from distant astrophysical sources are attenuated due to
electron-positron pair creation by interacting with ultraviolet/optical to
infrared photons which fill the universe and are collectively known as the
extra-galactic background light (EBL). We model the ~0.1-10 eV starlight
component of the EBL derived from expressions for the stellar initial mass
function, star formation history of the universe, and wavelength-dependent
absorption of a large sample of galaxies in the local universe. These models
are simultaneously fitted to the EBL data as well as to the data on the stellar
luminosity density in our local universe. We find that the models with modified
Salpeter A initial mass function together with Cole et al. (2001) or Hopkins
and Beacom (2006) star formation history best represent available data. Since
no dust emission is included, our calculated EBL models can be interpreted as
the lower limits in the ~0.1-1 eV range. We present simple analytic fits to the
best-fit EBL model evolving with redshift. We then proceed to calculate
gamma-ray opacities, and absorption of ~10-300 GeV gamma-rays coming from
different redshifts. We discuss implications of our results for the Fermi Gamma
Ray Space Telescope and ground-based Air Cherenkov Telescopes.
