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All data obtained in VLA and VLBA observing proposals are archived. That is,
the raw correlator output is archived, including in the case of VLBA programs
correlated data from any non-VLBA telescopes that have been used. These data
are reserved for the exclusive use of the observing team for a period of
18 months following the end of the last observations requested in the original
proposal or a direct extension of that proposal. For VLBI programs that use
the phased VLA, the VLA correlator data are immediately available to all unless
the proposal specified that a VLA image was to be made as well as a VLBI image.
To obtain archive data after the 18 month period you must make a request
to the VLA/VLBA Schedulers (Barry Clark and Joan Wrobel:
schedsoc@nrao.edu).
You are strongly encouraged to contact
the original observer. More often than not, she or he will be happy to
provide a processed image. In any event, NRAO will inform them that a
request has been made.
If you wish to gain access to the raw data before the 18 month limit you must
obtain explicit permission from the Principal Investigator of the original
proposal and then notify the VLA/VLBA Schedulers
(schedsoc@nrao.edu).
The name and address of
the PI can be obtained from the publicly available cover sheets in any NRAO
library or from the VLA/VLBA Director's office.
The contents of the VLA archive can be listed using the program VLASORS or with
the World Wide Web interface to the
VLA Archive Database.
See the
January 1995
issue of the
NRAO newsletter
for more information.
Certain data products also are produced and made public as part of VLA and
VLBA large proposals. See the
Large Proposal web page to access these data.
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