Afterglow of GRB 990510
May 17, 2005
This is a (false-)colour composite of the area around the optical image of the afterglow of GRB 990510, based on three near-infrared exposures with the SOFI multi-mode instrument at the 3.6-m ESO New Technology Telescope (NTT) at La Silla, obtained on May 10, 1999, between 23:15 and 23:45 UT. The exposure times were 10 min each in the J- (1.2 Âµm; here rendered in blue), H- (1.6 Âµm; green) and K-bands (2.2 Âµm; red); the image quality is excellent (0.6 arcsec). The field measures about 5 x 5 arcmin2; the original pixel size is 0.29 arcsec. North is up and East is left.
Topics: Technology Internet, New Technology Telescope, La Silla Observatory, Telescopes, Utah, Gamma-ray burst, European Southern Observatory