Gamma Ray Burst Optical Counterpart Search Experiment (GROCSE)
- and others
GROCSE (Gamma-Ray Optical Counterpart Search Experiments) 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 1, is sensitive down to Mv {approximately} 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 Mv {approximately} 14 with a 5 second exposure. GROCSE 2 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 2K x 2K 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 17.6 x 17.6 {degree}. GROCSE II will be operated by the end of 1995. In this paper, the authors present an overview of the GROCSE system and the results of measurements with a GROCSE 2 prototype unit.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 226046
- Report Number(s):
- UCRL-JC-123539; CONF-9510332-6; ON: DE96009810; TRN: AHC29610%%88
- Resource Relation:
- Conference: 3. Huntsville symposium on gamma ray bursts, Huntsville, AL (United States), 25-27 Oct 1995; Other Information: PBD: 27 Oct 1995
- Country of Publication:
- United States
- Language:
- English
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Gamma ray burst optical counterpart search experiment (GROCSE)
Results from GROCSE I: A real-time search for gamma ray burst optical counterparts