NRAO eNews
October 2008 • Vol. 1, Iss. 5
- The Expansion of Supernova Remnant G21.5–0.9: Is PSR J1833–1034 the Youngest Pulsar?
- Discovery of a Small Group Driving the Evolution of an Edge-On Spiral Galaxy
- Cosmic Rays and the Magnetic Field in the Nearby Starburst Galaxy NGC 253
- Neutral Hydrogen Clouds in the M81/M82 Group
- ALMA Project Progress
- North American ALMA Science Center
- The ALMA Spectral Line Catalog
- The Birth and Feedback of Massive Stars, Within and Beyond the Galaxy: The NAASC Science Workshop for 2008
- Current Status
- VLA Configuration Schedule, Proposals, and Scheduling
- VLBA and HSA Proposals and Scheduling
- Global cm VLBI Proposals
- VLA and EVLA Spectral Line Observations Below 1200 MHz
- Status of Observing with the Transition Array
- VLBA Sensitivity Upgrade Project
- First 3mm Science Observations with the GBT and MUSTANG Call for Proposals
- The GBT Dynamic Scheduling System Update
- Progress on the Ka-Band Focal Plane Array for the GBT
- Opportunities for University-Led Technical Development Projects in Green Bank
- New NRAO Website Debuts
- The NRAO at the American Astronomical Society and American Association for the Advancement of Science Meetings
- Call for GBT Shared-Risk MUSTANG Proposals
- Large Proposals to Use NRAO Telescopes
- Chris Carilli Appointed Observatory Chief Scientist
- Eleventh Synthesis Imaging Workshop
- 2008 Grote Reber Medal Awarded to Sandy Weinreb
- NRAO Participates in the BEYA Conference
- NRAO Business Managers Meet in Chile
- NRAO Library News
- Past Issues
- Contact the Editor
- Subscribe
- More Information
NRAO Newsletter • April 2008 • Issue 115
VLA Configuration Schedule
| Configuration | Starting Date | Ending Date | Proposal Deadline |
| C | 07 Mar 2008 | 27 May 2008 | 01 Oct 2007 |
| DnC | 06 Jun 2008 | 23 Jun 2008 | 01 Feb 2008 |
| D | 27 Jun 2008 | 15 Sep 2008 | 01 Feb 2008 |
| A | 03 Oct 2008 | 12 Jan 2009 | 02 Jun 2008 |
| BnA | 23 Jan 2009 | 09 Feb 2009 | 01 Oct 2008 |
| B | 13 Feb 2009 | 18 May 2009 | 01 Oct 2008 |
VLA Proposals
Use of the web-based NRAO Proposal Submission Tool is required for all VLA proposal submissions. The maximum antenna separations for the four VLA configurations are A-36 km, B-11 km, C-3 km, and D-1 km. The BnA, CnB, and DnC configurations are the hybrid configurations with the long north arm, which produce a circular beam for sources south of about -15 degree declination and for sources north of about 80 degree declination. Some types of VLA observations are significantly more difficult in daytime than at night. These include observations at 90 cm (solar and other interference; disturbed ionosphere, especially at dawn), deep 20 cm observations (solar interference), line observations at 18 and 21 cm (solar interference), polarization measurements at L-Band (uncertainty in ionospheric rotation measure), and observations at 2 cm and shorter wavelengths (tropospheric phase variations, especially in summer). In 2008, the A configuration daytime will involve RAs between 12h and 20h. Proposers and observers should be mindful of the impact of EVLA construction.
VLA Scheduling
VLA scheduling takes two forms, fixed date and dynamic. Some approved proposals will be scheduled on fixed dates. Other approved proposals will be accepted for insertion into the VLA dynamic scheduling queue; a guide to VLA dynamic scheduling is available online as well as Current and past VLA schedules. Observers should consult the “EVLA returns” page for instructions on how to include EVLA antennas successfully.
J. M. Wrobel and B. G. Clark
schedsoc@nrao.edu
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