I have produced an MS Excel spreadsheet to compute azimuth, elevation, R.A. and Dec, during space shuttle ascents on missions to ISS: http://satobs.org/seesat_ref/Shuttle/Shuttle_Ascent_Trajectory_to_ISS.xls To use, enter your observation site co-ordinates and the date and time of lift-off, in the specially labelled cells (those with red coloured font). The current version is set up for STS 122 on 2007 Dec 6, as seen from Washington, D.C. The sun will not have set at Washington, so visibility may be difficult. A bit further up the North East coast, the sun will have set. The trajectory data was for STS-88, as posted here: http://satobs.org/seesat/Jun-2000/0308.html I believe that for any given launch, the look angles computed by my spreadsheet will be accurate to within about one degree during the first several minutes of flight, and progressively less accurate thereafter. Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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