A note of clarification: The eastern most camera was 640 meters east of the predicted Lidar track. -------------- Original message ---------------------- From: kt.mag@att.net (Gregg Hendry) > Laser light from Calipso was observed at 09:13:50 UT on 16 Sept. An observer > was stationed on the LIDAR ground track obtained from > (http://www-calipso.larc.nasa.gov/tools/overpass/coords/). A digital camera was > located on the predicted sub-satellite ground track (350 meters east of the > Lidar track) and another was placed about 290 meters east of the ground track. > The sky was crystal clear and dark, with no evidence of haze. > > The observer saw a brief green flash at zenith of about 1st magnitude and no > beams. > > The ground track camera recorded a green spot at zenith comparable to magnitude > 5 stars nearby in the 15 second exposure and a small green smudge a little east > of the spot. > > The camera east of the ground track recorded a larger spot about 15 arcminutes > in diameter and overexposed in the center. > > From this and other observations made over the last several months under clear > skies it appears that the best apparitions of the Calipso laser appear on or > east of the sub-satellite ground track. > > Gregg Hendry > > ------------------------------------------------------------------------- > Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: > http://www.satobs.org/seesat/seesatindex.html > ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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