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Anticipated Performance Tables
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Roman WFI
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Exposure time requirements to reach fixed signal-to-noise for the slitless prism
Exposure time for prism spectroscopy of a point source
Zodiacal time 1.2x minimum
Zodiacal time 1.44x minimum
Zodiacal time 2.0x minimum
Zodiacal time 3.5x minimum
Exposure time for prism spectroscopy with 0.2 arcsec half light radius
Zodiacal time 1.2x minimum
Zodiacal time 1.44x minimum
Zodiacal time 2.0x minimum
Zodiacal time 3.5x minimum
Exposure time for prism spectroscopy with 0.3 arcsec half light radius
Zodiacal time 1.2x minimum
Zodiacal time 1.44x minimum
Zodiacal time 2.0x minimum
Zodiacal time 3.5x minimum
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