Dr. Andrew Ptak is the Hubble Space Telescope deputy operations project scientist at NASA's Goddard Space Flight Center (GSFC) in Greenbelt, Maryland. He helps provide oversight for Hubble operations and assists in monitoring and reviewing Hubble data analysis software. Ptak takes part in guest observer reviews ― during which scientists outside the Hubble program propose for and are awarded time to use Hubble ― and works closely with the Hubble Fellowship Program and grants administration, which award grants to the scientific community in order to support observations.