The Focal L band Array for the Green Bank Telescope (FLAG) is the most sensitive phased array radio camera demonstrated to date. Digitally synthesized beams provide a wide field observation capability and flexibility for different observation scenarios. FLAG is available for scientific usage at L band on a scheduled basis on the GBT. The digital back end processes up to 150 MHz of instantaneous bandwidth, tunable from 1200-1500 MHz.

FLAG is currently transitioning from expert user mode to “guided user mode.” The software is functional and includes a user interface suitable for array observations, calibration, beamforming, and imaging. The FLAG team is available to provide training and guidance for prospective users and a modest learning curve should be expected. If you are interested in using FLAG, please contact one of the FLAG PIs for guidance.

This is the FLAG user manual. Since the back end is currently undergoing modifications and improvements, there may be changes to the manual over time.

flag_user_manual.pdf

spectrallinepostprocessingsoftware.pdf

This document provides details on the software used to process data for FLAG.

flag_software_details.pdf

K. M. Rajwade, "A 21 cm pilot survey for pulsars and transients using the Focal L-Band Array for the Green Bank Telescope," Monthly Notices of the Royal Astronomical Society, 2019

A. Roshi et al, "Performance of a Highly Sensitive, 19-element, Dual-polarization, Cryogenic L-band Phased-array Feed on the Green Bank Telescope," Astronomical Journal, 2018

pingel_flag_thesis_chapter.pdf