{HEAD ~ The present invention} provides a single telescope with {TAIL ~ a pair} of three mirror anastigmats which may be moved with respect to one another to provide a multiple field of view optical system 
{ HEAD ~ The present invention } provides a single telescope with { TAIL ~ a pair } of three mirror anastigmats which may be moved with respect to one another to provide a multiple field of view optical system
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH