deletions | additions       diff --git a/Observations.tex b/Observations.tex  index 14a0308..6cef0f5 100644  --- a/Observations.tex  +++ b/Observations.tex 
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To discover transient sources, the FrontierSN team processes each new  epoch of HST data through a difference imaging  pipeline\footnote{\url{https://github.com/srodney/sndrizpipe}, pipeline\footnote{\url{https://github.com/srodney/sndrizpipe}},  using archival HST images to provide reference images (templates) which are  subtracted from the astrometrically registered HFF images. In the case  of MACS0416, the templates were constructed from images collected as 
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