The High Resolution Stereo Camera (HRSC) for Mars 96: Results of Outdoor Tests
The High Resolution X-ray Spectrometer on the Astro-E2 mission
The High Time Resolution Spectrometer (HTRS) aboard the International X-ray Observatory (IXO)
The high-contrast performance of an optical vortex coronagraph
The high-energy spectrum of Cygnus X-1 as measured by INTEGRAL
The high-resolution cross-dispersed echelle white-pupil spectrometer of the McDonald Observatory 2.7-m telescope
The High-Resolution Doppler Imager: status update 12 years after launch
The Hipparcos Catalogue: 10th anniversary and its legacy
The Hipparcos mission. Pre-launch status. Volume I: The Hipparcos satellite.
The historical role of the CSAO H-maser and importance of hydrogen masers in time keeping.
The Hobby-Eberly Telescope Commissioning Status
The Hobby-Eberly Telescope Completion Project
The Hobby-Eberly Telescope medium resolution spectrograph and fiber instrument feed
The Hobby-Eberly Telescope; Status and Science Capability
The homestake surface-underground scintillators: Initial results
The Hopkins Ultraviolet Telescope Engineering Report for the Astro-2 Mission
The Hubble Space Telescope Advanced Camera for Surveys
The Hubble Space Telescope fine guidance system operating in the coarse track pointing control mode
The Hubble Space Telescope high speed photometer
The Hubble Space Telescope Scientific Instruments