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Determine when or if an astronomical position can be viewed by a given space telescope.
Use semicolons to separate multiple object names or coordinate
pairs (e.g., Cyg X-1 ; 101.295, -16.699 ; 6 45 10.8, -16 41 58).

     


Web interface developed and maintained by Edward J. Sabol of the HEASARC.


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HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.