LSST - Large Synoptic Survey Telescope

Program Description: LSST The 8.4-meter Large Scale Synoptic Telescope will survey the entire visible sky deeply in multiple colors every week with its three‐billion pixel digital camera, probing the mysteries of dark matter and dark energy, and opening a movie‐like window on objects that change or move rapidly: exploding supernovae, potentially hazardous near‐Earth asteroids, and distant Kuiper Belt Objects. The LSST will produce a 6-band (0.3-1.1 micron) wide-field deep astronomical survey of over 20,000 square degrees of the southern sky using an 8.4-meter ground-based telescope. Each patch of sky will be visited about 1000 times in ten years. The telescope will be installed at the Summit site at the AURA Observatory in Chile. Visualization of the data will be accomplished using the ASCOT visualization toolkit (being built by Andy Connally at UWash, in partnership with UArizona and Netscape). The toolkit is designed for astronomy primarily, but can be used for other types of data. Views will be shared simultaneously by collaborators. Scheduled to go into Commission in 2020, operation in 2021.

Year Started: 2021.

Organization Description: The consortium includes 42 institutions, listed at

Data Description: More than 30 Terabytes of data must be processed and stored each night in producing the largest non-proprietary data set in the world; a Base Site will provide long term storage of Copy 1 of the data and host Data Access/User Services. The Headquarters Facility will be in the Southwest US (Arizona?), providing management, science operations, and education/outreach. An archive site will keep data copy 2 and be located in Chicago, with a second Data Access/User Services center. The object catalog must flow from US to Chile. Each object has 37 Billion rows, total of 109TB per object. A Moving Object requires 0.003 TB (3 GB) throughput. The system will collect 15 TB per night, containing 100 million sources to be analyzed in real time, Data will be released to the public every 6 months. Each release will require recomputing a set of large computations, currently using the NCSA Illinois supercomputer for this. There will ultimately be a repository of 60 PB of images and 10 PB of catalog data.

Project Type: Instrument

Project Domains: Math and Physical Sciences

Budget: 390 Million US

Federal Funding: NSF, DOE

Program Data

Location Lat/Lon Coordinates Location Type Data Type Data Generation Single Data Instance Size (TB) Estimated Daily Data Size (GB) Estimated Annual Data Size (PB) Average Sustained Throughput (Gbps) Maximum Sustained Throughput (Gbps) Online Repository Size (PB) Total Repository Size (PB) Delay Tolerance (minutes) Jitter Sensitive? Uses the Cloud?
LSST, Chile -29.91,-71.25 Instrument Object Scheduled 109.00 15000.00 20.00 3.00 - -
Chicago, IL, United States 41.88,-87.63 Data Repository Object Scheduled 109.00 15000.00 20.00 3.00 200.00 - -