Space telescope - Meeting the pointing control challenge with today's technology

The flight hardware and ground system for Hubble Space Telescope astrometry

“…Although the guide-star acquisition procedure has been revised over the years, the original concept as described in Dougherty et al 1982a The guide-star acquisition commanding shares the Conditional Processor of the DF-224 computer along with the astrometry commands. To maintain stable vehicle control during an observation, two FGSs must be locked on guide stars.…”

The flight hardware and ground system for Hubble Space Telescope astrometry

“…Although the guide-star acquisition procedure has been revised over the years, the original concept as described in Dougherty et al 1982a The guide-star acquisition commanding shares the Conditional Processor of the DF-224 computer along with the astrometry commands. To maintain stable vehicle control during an observation, two FGSs must be locked on guide stars.…”

The flight hardware and ground system for Hubble Space Telescope astrometry

“…Although the guide-star acquisition procedure has been revised over the years, the original concept as described in Dougherty et al 1982a The guide-star acquisition commanding shares the Conditional Processor of the DF-224 computer along with the astrometry commands. To maintain stable vehicle control during an observation, two FGSs must be locked on guide stars.…”

The flight hardware and ground system for Hubble Space Telescope astrometry

“…Although the guide-star acquisition procedure has been revised over the years, the original concept as described in Dougherty et al 1982a The guide-star acquisition commanding shares the Conditional Processor of the DF-224 computer along with the astrometry commands. To maintain stable vehicle control during an observation, two FGSs must be locked on guide stars.…”