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.

FLAG Technical Specifications: flagtechnicaldocument.pdf

FLAG User Manual: flag_user_manual.pdf

Spectral line mode processing: 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