Astron. Astrophys. Suppl. Ser. 138, 593-594
Send offprint request: R. Hudec
Astronomical Institute, CZ-251 65 Ondrejov, Czech Republic
Received January 21; accepted May 10, 1999
The optical transient (OT) searches are heavily affected, especially at low magnitudes, by background. I will discuss the most important sources of this background, and suggest a suitable strategy for searches for optical afterglows of GRBs in optical.
Key words: gamma-ray: bursts
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