  We estimate the Mass Function of void galaxies in the second public data
release of the Sloan Digital Sky Survey from a sample of 1000 galaxies with
local density contrasts of delta_v < -0.6. The galaxy sample is split into
ellipticals and spirals using a color-Sersic index criteria. We estimate the
virial masses of ellipticals using the measured spectral line-widths along with
the observed size. Projection effects and uncertainties in halo properties make
mass estimates of spirals more difficult. We use an inversion of the
Tully-Fisher relation to estimate the isothermal rotational velocity, and
introduce a scaling factor to estimate the halo extent. We then fit the
measured mass function against a theoretical Press-Schechter model, and find
that the distribution of galaxies in voids appears to be nearly unbiased
compared to the mass.
