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The Gamma Ray Burst GRB050904 was found by the SWIFT satellite at 1:51 UT on Sept 04. It was localized to lie within an error of 11" by the X-ray telescope on SWIFT. Follow-up observations with ground-based telescopes rapidly identified the optical afterglow. The Magnum telescope began to observe the source after 12 hours when the weather on Haleakala permitted. It obtained interleaved observations of the infrared Y,J,H and K colors, and simultaneously optical R and I images, which are shown in this image. The GRB, identified by the green circle, is seen in the infrared but not at shorter wavelengths.

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