Abbreviations, Acronyms, Definitions, and Useful URLs
| AAT | Archive Access Tool; https://data.nrao.edu |
| DDT | Director’s Discretionary Time |
| LBO | Long Baseline Observatory |
| LST | Local Sidereal Time |
| NRAO Science Helpdesk | https://help.nrao.edu/ |
| Open Skies | Open Skies observing time is when any scientist, regardless of nationality or residence, can apply for time on an instrument through a peer-reviewed process. The percentage of time that is considered Open Skies depends on the facility. |
| OPT | Observation Preparation Tool; https://obs.vla.nrao.edu/opt/; requires login |
| PFT | Proposal Finder Tool; https://library.nrao.edu/proposals |
| PI | Principal Investigator |
| PST | Proposal Submission Tool; https://my.nrao.edu; requires login |
| RCT | Resource Catalog Tool; https://obs.vla.nrao.edu/rct; requires login |
| SCT | Source Catalog Tool; https://obs.vla.nrao.edu/sct; requires login |
| Science Program | https://science.nrao.edu/science/science-program and https://greenbankobservatory.org/science/gbt-observers/proposals/past-proposal-calls/ |
| SRDP | Science Ready Data Products |
| SRP | Science Review Panel |
| TAC | Telescope Time Allocation Committee |
| TTA | Telescope Time Allocation |
| ToO | Target of Opportunity |
| VLA Configuration |
The antennas in the Karl G. Jansky Very Large Array (VLA) are placed in specific configurations. There are four basic antenna arrangements, called configurations, whose scales vary by the ratios 1 : 3.28 : 10.8 : 35.5 from smallest to largest. These configurations are denoted D, C, B, and A, respectively. VLA configuration cycle; The VLA completes one cycle through all four configurations in an approximately 16 month period. See https://public.nrao.edu/vla-configurations/ for current and up-to-date configuration schedules and associated proposal deadlines. |
