Exploring the Gamma Ray Horizon with the next generation of Gamma Ray   Telescopes. Part 3: Optimizing the observation schedule of gamma-ray sources   for the extraction of cosmological parameters
  The optimization of the observation schedule of gamma-ray emitters by the new generation of Cherenkov Telescopes to extract cosmological parameters from the measurement of the Gamma Ray Horizon at different redshifts is discussed. It is shown that improvements over 30% in the expected cosmological parameter uncertainties can be achieved if instead of equal-observation time, dedicated observation schedules are applied. 
O. Blanch, M. Martinez