LSST Observing Strategy White Paper: LSST Observations of WFIRST Deep Fields

Understand

The Wide-Field Infrared Survey Telescope (WFIRST) is expected to launch in the mid-2020s.

• With its wide-field near-infrared (NIR) camera, it will survey the sky to unprecedented detail.
• As part of normal operations and as the result of multiple expected dedicated surveys, WFIRST will produce several relatively wide-field (tens of square degrees) deep (limiting magnitude of 28 or fainter) fields.
• In particular, a planned supernova survey is expected to image 3 deep fields in the LSST footprint roughly every 5 days over 2 years.