PROMPT Telescopes

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The University of North Carolina at Chapel Hill, United States, is currently building PROMPT, an acronym for Panchromatic Robotic Optical Monitoring and Polarimetry Telescopes, at Cerro Tololo Inter-American Observatory (CTIO) in Chile. PROMPT's primary objective is rapid and simultaneous multiwavelength observations of gamma-ray burst afterglows, some when they are only tens of seconds old. In addition to measuring redshifts by dropout, and early-time SFDs and extinction curves of sufficiently bright afterglows in unprecedented detail, PROMPT will facilitate quick response observations at larger observatories such as the UNC-led 4.1-m SOAR Telescope. PROMPT will also serve as a platform for undergraduate and high school education throughout the state of North Carolina.

When completed, PROMPT will consist of six 0.41-m Ritchey-Chrétien telescopes by RC Optical Systems on rapidly slewing (9°/sec) Paramount ME mounts by Software Bisque, each under a clamshell dome by Astro Haven. Five of these telescopes will use rapid-readout (<1 sec) Alta U47+ cameras by Apogee, which make use of E2V CCDs. The sixth is being outfitted with an LN2-cooled Micro-Cam by Rockwell Scientific for NIR imaging. Each mirror and camera coating combination has been optimized for a different wavelength range, including a u-band optimized telescope. Although other filters will be available, PROMPT will automatically observe GRB localizations in ugrRizYJH, six of them simultaneously. The R-band telescope will additionally measure polarizations. The polarimeter is being designed and built at UNC-Chapel Hill's Goodman Laboratory for Astronomical Instrumentation.

PROMPT is under the control of "Skynet", a prioritized queue scheduling system that we are developing at UNC-Chapel Hill. Skynet is written in LabView and runs on a computer at UNC-Chapel Hill's Morehead Observatory. Skynet interacts with MySQL databases and commands dumb-by-design "Terminator" programs at each telescope. Images are automatically transferred back to a 1.1 terabyte RAID 5 with tape backup at Morehead Observatory, making use of communication libraries that we wrote for remote use of SOAR. Users can submit jobs and retrieve data from any location via a PHP-enabled web server that interacts with the MySQL databases. However, GRBs receive top priority and are automatically added to the queue via a socket connection.

[edit] External Links

Official PROMPT Site
PROMPT Description (astro-ph/0502429)
SkyNet Telescope Operations
SkyNet Description
Live PROMPT Webcam
PROMPT Technical Details