filters in the wavelength range of 1-1.7$\mu$m were manufactured for the NEWFIRM camera on the Kitt Peak 4m telescope for the survey. Data were taken over the 2008A, 2008B, and 2009A semesters, with a total of 75 nights (45 nights through the NOAO Survey Program and an additional 30 nights through a Yale-NOAO time trade).

The survey targets two $\sim$0.25 deg$^{2}$ fields within the Cosmological Evolution Survey (COSMOS) and All-wavelength Extended Groth Strip International Survey (AEGIS), chosen to take advantage of the wealth of publically-available ancillary data over a broad wavelength range. We combine our five medium-band near-IR images and a broad-band $K$-band image taken with the NEWFIRM camera with optical images in the $ugriz$ broad-band filters of both survey fields, made publically available through the CFHT Legacy Survey[^1], using images reduced by the CARS team [@Erben09; @Hildebrandt09]. Additionally, we include deep Subaru images with the $B_{J}V_{J}r^{+}i^{+}z^{+}$ broad-band filters in the COSMOS field [@Capak07]. Finally, we include IR images in the $Spitzer$-IRAC bands over the entire COSMOS pointing that are provided by the S-COSMOS survey [@Sanders07], and partial coverage of the AEGIS pointing ($\sim\!$0.15 deg$^{2}$) overlapping with the Extended Groth Strip [@Barmby08].

In this study, we use a $K$-selected catalog 