Searching for Something in Nothing: Density Analysis of Cosmic Void FN2

We have begun a search for emission line galaxies in the center of the void FN2 using new software developed by our group. We are using images taken in three redshifted narrow-band filters. If a galaxy has strong emission lines and is far enough away, the galaxy will be brighter in one or two of the filters. By comparing a galaxy's brightness in the three filters, we can find galaxies which are possibly in the center of the void. In our preliminary study, we created a catalogue of any interesting objects that appear in the brightness comparison images.