We report the results of a pilot program for a Green Bank Telescope MUSTANG-2 Galactic Plane survey at 3mm (90GHz), MGPS90. The survey achieves a typical 1{sigma} depth of 1-2mJy/beam with a 9" beam. We describe the survey parameters, quality assessment process, cataloging, and comparison with other data sets. We have identified 709 sources over seven observed fields selecting some of the most prominent millimeter-bright regions between 0{deg}<l~80%) of the 3mm emission comes from plasma, either through free-free or synchrotron emission.
Cone search capability for table J/ApJS/248/24/tableb1 (MUSTANG-2 source IDs and photometry)