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Configuration Plans and Proposal Deadlines

VLA Configuration Plans and Proposal Deadlines

The antennas in the Karl G. Jansky Very Large Array (VLA) are placed in specific configurations. For the principal configurations D, C, B and A, the maximum antenna separations are 1.0 km, 3.4 km, 11.1 km and 36.4 km, respectively. In addition to the principal configurations, there are the hybrid configurations DnC, CnB and BnA, recommended for sources located south of declination -15 degrees or north of declination 75 degrees. The ordering of the configurations is D, DnC, C, CnB, B, BnA and A. The planned move periods between configurations are conservative, and the array is often in its destination configuration several days before the planned start of its observing period. Early submission of scheduling blocks is therefore recommended.

The NRAO has a semester system with proposal deadlines of Feb 1 and Aug 1. At either deadline requests can be made for a VLA configuration linked to a future deadline. If a deadline falls on a holiday or weekend, it is extended to the next working day.

The VLA will be unavailable for observing 2014 Jun 2-6.

For the next proposal deadline, 2014 Aug 1, plots in pdf format will soon show the estimated amount of science time available per LST hour. To access those plots, click on the boldfaced configurations in the table.

VLA Configuration Plans and Proposal Deadlines

Semester

Observing Period

Configuration

Proposal Deadline

2014A 2014 Feb 21 - 2014 Jun 02 A
2013 Aug 1
2014A 2014 Jun 27 - 2014 Sep 15
D 2013 Aug 1
2014B 2014 Sep 19 - 2014 Oct 06
DnC 2014 Feb 3
2014B 2014 Oct 17 - 2015 Jan 05 C 2014 Feb 3
2014B 2015 Jan 09 - 2015 Jan 26 CnB 2014 Feb 3
2015A 2015 Feb 06 - 2015 May 11 B 2014 Aug 1
2015A 2015 May 15 - 2015 Jun 01 BnA 2014 Aug 1
2015A 2015 Jun 12 - 2015 Sep 21 A 2014 Aug 1
2015B 2015 Oct 13 - 2016 Jan 04 D 2015 Feb 2
2015B 2016 Jan 08 - 2016 Jan 25 DnC 2015 Feb 2
2016A 2016 Feb 05 - 2016 Apr 25 C 2015 Aug 3
2016A 2016 Apr 29 - 2016 May 16 CnB 2015 Aug 3
2016A 2016 May 27 - 2016 Aug 29 B 2015 Aug 3
2016B 2016 Sep 02 - 2016 Sep 19 BnA 2016 Feb 1
2016B 2016 Sep 30 - 2017 Jan 09 A 2016 Feb 1

VLA LST at Midnight Mountain Time (hours)

Jan 1Feb 1Mar 1Apr 1May 1Jun 1
6.4 8.4 10.4 11.4 13.4 15.4
Jul 1Aug 1Sep 1Oct 1Nov 1Dec 1
17.4 19.4 21.4 23.4 1.4 4.4