Gamma ray burst optical counterpart search experiment (GROCSE)

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.51607· OSTI ID:21163555

Park, Hye-Sook; Ables, Elden; Bionta, Richard M; Ott, Linda; Parker, Eric; Akerlof, Carl; Lee, Brian; Wallace, Scott; Barthelmy, Scott; Butterworth, Paul; Cline, Thomas; Gehrels, Neil; Fishman, Gerald; Kouveliotou, Chryssa; Meegan, Charles; Ferguson, Donald ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

GROCSE (Gamma-Ray Optical Counterpart Search Experiment) is a system of automated telescopes that search for simultaneous optical activity associated with gamma ray bursts in response to real-time burst notifications provided by the BATSE/BACODINE network. The first generation system, GROCSE I, is sensitive down to M{sub V}{approx}8.5 and requires an average of 12 seconds to obtain the first images of the gamma ray burst error box defined by the BACODINE trigger. The collaboration is now constructing a second generation system which has a 4 second slewing time and can reach M{sub V}{approx}14 with a 5 second exposure. GROCSE II consists of 4 cameras on a single mount. Each camera views the night sky through a commercial Canon lens (f/1.8, focal length 200 mm) and utilizes a 2Kx2K Loral CCD. Light weight and low noise custom readout electronics were designed and fabricated for these CCDs. The total field of view of the 4 cameras is 17.6x17.6 deg. GROCSE II will be operating by the end of 1995. In this paper, we present an overview of the GROCSE system and the results of measurements with a GROCSE II prototype unit.

• OSTI ID: 21163555
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 384; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CAMERAS
CHARGE-COUPLED DEVICES
COINCIDENCE METHODS
COSMIC GAMMA BURSTS
COSMIC PHOTONS
ERRORS
GAMMA DETECTION
IMAGES
LENSES
NIGHT SKY
NOISE
OPTICAL ACTIVITY
READOUT SYSTEMS
VISIBLE RADIATION