deletions | additions       diff --git a/Observations.tex b/Observations.tex  index fabf20c..8a68e73 100644  --- a/Observations.tex  +++ b/Observations.tex 
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interest (primarily supernovae, SNe) are followed up with additional  HST imaging or ground-based spectroscopic observations as needed. For  a more complete description of the operations of the FrontierSN  program, see \citep{Rodney:2015a}. \citet{Rodney:2015a}.  The follow-up observations for \spock\ included HST observations in  infrared and optical bands using the WFC3-IR and ACS-WFC detectors, 
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\citep{Benitez:2000}, and $z=0.92\pm0.05$, derived using the EAZY  program \citep{Brammer:2008}.  Table~\ref{tab:Photometry} presents photometry of the \spock\ events from all available HST observations. The flux was measured on difference images, using both simple apertures and by fitting with an empirical point spread function (PSF). The PSF model was defined using the DA white dwarf star P330E, observed in a separate HST calibration program. Owing to the long-term stability of the HST PSF, we made no corrections to the PSF model epoch by epoch.  TODO : add more detail on aperture and psf photometry?  TODO: add a table with photometry. 
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