The starting point for the PS1 data archive is at Pan-STARRS1 data archive home page.

Note:  If you edit an existing entry, please explain why you made the change in the "What did you change?" box before pushing the "Save" button.

TermExplanation
DetectionCatalog data for a single source from a single exposure.
ObjectCatalog data for one or more associated detections.
OTAOrthogonal Transfer Array. An OTA consists of an 8 x 8 array of 600 x 600 pixel CCD cells. The PS1 camera consists of 60 OTAs.
PSPS

Published Science Product System. This is the PS1 object database.

Sky cellOne tile in the PS1 tessellation of the sky.
Stack imageImage constructed by combining all useful warp images that overlap a single sky cell. Sometimes simply referred to as a "stack".
Stack detectionCatalog data for a single source from a stack image.
Stack objectCatalog data for one or more associated stack detections.
TessellationThe scheme used to cover the spherical sky with a regular pattern of rectangular images in a manner that leaves no gaps in coverage.
Warp imageImage constructed by resampling a single exposure onto a canonical sky cell projection. Sometimes simply referred to as a "warp".
UbercalThe process that uses comparisons in flux measurements from overlapping exposures to improve the global calibration.
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