Being an array operator at the VLA requires an exceptional ability to adapt to a constantly changing environment. Operators must routinely interact with VLA and EVLA computer systems using several different operating systems and software applications (Linux, Windows, Modcomp, and the EVLA Monitor and Control System) to ensure the integrity of every scientific observation that runs at the VLA. The array can currently observe 8 different frequency bands ranging from approximately 74 MHz (4-band) all the way up to 50 GHz (Q-band), and in a given day may observe astronomical objects such as supernovae, hydrogen gas clouds, gamma ray bursts and all manner of active galactic nuclei (AGNs). It is the operators' responsibility to ensure that each of the VLA's systems (hundreds of different monitoring points per antenna) functions within established parameters. A high proficiency in multi-tasking is a must, as a typical day at the VLA will involve:

• Constant monitoring of multiple computer screens to ensure that each VLA antenna is configured correctly and operating normally
• Accommodating requests from, and working with, observers and scientific staff whose tests or observations are running
• Maintaining an accurate observation log and documenting any problems that may affect astronomical data
• Responding to and managing radio calls and traffic from workers and technicians in the field
• Performing system tests to measure values used to finely tune each antenna
• Writing detailed maintenance reports for system errors and malfunctions
• Taking corrective action when errors and faults occur
• Answering questions from visitors and tour groups

Operating at radio frequencies, the VLA observes the sky 24 hours a day, 362 days a year. There is usually only one operator on duty and s/he must know how to troubleshoot and fix the myriad of problems that can arise. When the operators cannot fix a problem themselves, there are dozens of technicians that are on-call anytime to come out to the site for repairs.

Visitors will often ask to see the image of the source we are observing. Unlike what is viewed through an optical telescope, the data gathered from a radio telescope is all numerical. Images are created through mathematical algorithms contained in the Astronomical Image Processing Software (AIPS) package.