STScI Logo

Hubble Space Telescope
GHRS Instrument Science Report 064

GHRS Instrument Science Report 064

"Locate=Extended: A New Capability for GHRS"

Stephen J. Hulbert and Wayne E. Baggett

An abstract excerpted from the report:

GHRS proposal 5591 was designed to test the new commanding capability 
known as LOCATE=EXTENDED. This capability is meant to improve the
centering of extended targets in the GHRS X-direction. The test
executed nominally although an incorrect use of the POS TARG special
requirement in the proposal specification degraded some of the data.
Supplemental use of pointing data demonstrated that the new commanding
functioned nominally. No significant differences in centering were 
found for the target, Io, among the various modes of LOCATE=EXTENDED.