An project
PSTN-001, Docushare Document-27758

On the Choice of LSST Flux Units

  • Željko Ivezić
  • the LSST Project Science Team


A linear measure of flux is preferred for LSST catalogs. This document provides technical details about this preference in support of the LSST Project Science Team’s decision to adopt nano-jansky (1 nJy =10−35  Wm−2Hz−1) as the standard LSST flux unit. Difficulties associated with homogenizing broad-band flux measurements to a uniform system are also discussed in some detail.