Viewing

Determine when or if an astronomical position can be viewed by a given space telescope.

Select one or more space telescopes:
Object Name or Coordinates:
	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).
Name Resolver:
Coordinate System:

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