The NOAO VO Portal caches imaging metadata from VO SIA services, like
SDSS,
HST (at CADC),
Chandra,
XMM, the
INT Wide-Field Survey,
and the
NOAO Science Archive.
These caches are updated occasionly. If you need the most up-to-date
contents of these VO archives, please use the direct
SIA (Simple Image Access) options that
we provide.
The NOAO VO Portal connects directly to the
NOAO Archive
where data are ingested from NOAO instruments and pipelines regularly
(i.e., daily). The numbers (of files and data volumes) indicate the
currently available contents of the
NOAO Archive
with respect to the different instruments. These numbers are for
unique files and include all types (science observations, calibrations,
focus or test images, etc.)
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