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What is the PSPS and what does it do?

The Published Science Products Subsystem (PSPS) is the component of the Pan-STARRS observatory system that stores the standard data products generated by the Image Processing Pipeline (IPP) and other science clients and serves as the access point to these products for the observatory's user community. As such it serves as the system archive for the various science products. It also provides security to protect the integrity of the Pan-STARRS data products and protect the operational systems (e.g., IPP, MOPS, OTIS, CAMERA) from malicious attacks from outside that might tunnel in via the PSPS.

The PSPS itself is composed of a number of subsystems. Central to the PSPS design is the Data Retrieval Layer (DRL). User requests for data enter the DRL through a standard application programming interface (API) either from a human interface, such as the Pan-STARRS Science Interface (PSI) or a software client (e.g., a data robot). The DRL directs the data requests to one of several data stores in the PSPS system. In the PS1 design, two data stores, the Object Data Manager (ODM) and the Solar System Data Manager (SSDM) are being implemented by the Project team. While both of these data stores are relational database systems, the PSPS design is open and allows virtually any type of data store to be attached provided it obeys the interfacing rules defined for connecting to the DRL.

[[Image(PSPS_overview.JPG)]

The PSPS is not a real-time or short-term alert system. For those science programs that require fast data response the IPP provides timely updates to the appropriate Science Server, such aciences the Transient Science Server or the Moving Object Processing System.

Last modified 6 years ago Last modified on 11/15/11 00:16:54

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