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The Solar Mass Ejection Imager (SMEI) views nearly every point on the skyonce every 102 minutes and can detect point sources as faint as R~10thmagnitude. Therefore, SMEI can detect or provide upper limits for the opticalafterglow from gamma-ray bursts in the tens of minutes after the burst whendifferent shocked regions may emit optically. Here we provide upper limits for58 bursts between 2003 February and 2005 April.Comment: accepted for publication in ApJ, 17 pages, 8 figure

A Search for Early Optical Emission at Gamma‐Ray Burst Locations by theSolar Mass Ejection Imager(SMEI)