Joint VLA/VLBA/GBT Proposals

• Proposals requesting multiple NRAO telescopes (VLA, VLBA, GBT) are considered joint proposals unless they are pure VLBI proposals in which the GBT, phased VLA ("Y27"), and/or a single VLA antenna ("Y1") are requested as part of a VLBI array. In general, joint proposals must be submitted as separate proposals to all telescopes requested. The Proposal Submission Tool (PST) is required for joint proposals using the VLA and the GBT; for joint proposals requesting use of the VLBA, as of the 2 June 2008 proposal deadline, the PST may be used; the VLBI LaTeX form may also be optionally used instead of the PST. Joint proposals should include the same scientific and technical justifications.

• An exception to this policy is the use of the VLA for finding calibration sources, for polarization calibration, or pulsar phase determination in support of a VLBA proposal. In these cases, VLA time can be requested directly from the VLBA proposal. On the LaTeX cover sheet, the VLA should be filled in under "Non-VLBI Instruments". For VLBA proposals using the PST, VLA observations for this purpose should be requested in the text of the proposal. Justification for the use of the VLA for this purpose should be included in the Scientific or Technical sections of the proposal. Similarly, for VLBI proposals that wish to include the GBT, phased VLA ("Y27"), and/or a single VLA antenna ("Y1") as elements of the VLBI array, simply fill out the standard VLBI cover sheet, list the appropriate antennas as "other NRAO" (or select them from the "Stations" list under Resources in the PST), and include the appropriate reasoning in the justification regarding the need for the GBT and/or one or all of the VLA antennas.

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