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glenc
11-05-2013, 08:12 AM
The gamma-ray burst GRB 130427A erupted on April 27th with record-setting power. That made it an easy target for two of NASA's orbiting observatories, major ground-based telescopes, and even one lucky backyard observer. It reached visual magnitude 7.4...

Three RAPTOR (http://www.lanl.gov/quarterly/q_fall03/raptor_science.shtml) all-sky monitors recorded (http://gcn.gsfc.nasa.gov/gcn3/14476.gcn3) an optical counterpart at magnitude 7.4, 50 seconds before the Swift satellite trigger. Within a minute the optical glow was fainter than magnitude 10...

Its location, in northeastern Leo, was right ascension 11h 32m 33s, declination +27° 41′ 56″.

http://www.skyandtelescope.com/community/skyblog/newsblog/Brilliant-GRB-Blast-with-an-Amateur-Twist-206307581.html