  The extragalactic background light (EBL) is the second-most-intense form of
cosmic background light (the first being the cosmic microwave background) and
contains the redshifted optical radiation, from infra-red to ultraviolet,
emitted across all epochs, making it of great cosmological interest. While
direct measurements of the EBL are hampered by foreground contamination,
observations of VHE emission from distant sources can be used to obtain
indirect measurements of the EBL. In this work a maximum-likelihood fit is
applied to the energy spectra of blazars observed by VERITAS, an array of
ground-based imaging atmospheric Cherenkov telescopes sensitive to
very-high-energy (VHE; E>100 GeV) gamma rays. Using theoretical models of the
EBL shape and intensity, the EBL normalization is treated as a free parameter,
allowing for model-dependent constraints to be obtained. Details of this
maximum-likelihood analysis and preliminary model-dependent constraints on the
EBL, are presented.
