Hubble Space Telescope
(observatory-satellite with 2.4 meter reflective telescope)
The Hubble Space Telescope (HST) is a
NASA 2.4 meter reflector telescope in space.
- WFC3 ("Wide Field Camera 3") with facilities for optical and infrared spectrography, replaced earlier WF/PC and WF/PC2.
- NICMOS ("Near-infrared Camera and Multi-object Spectrometer") currently in hibernation, replaced earlier GHRS.
- COS ("Cosmic Origins Spectrograph") replaced earlier COSTAR.
- ACS ("Advanced Camera for Surveys") replaced earlier FOC.
- STIS ("Space Telescope Imaging Spectrograph") replaced earlier FOS.
The PCS ("Pointing Control System") is made up of instruments
of the following types:
- FGS ("Fine Guidance Sensors") can also be used for astrometry.
- CSS ("Coarse Sun Sensors").
- MSS ("Magnetic Sensing Systems").
- RSU ("Rate Sensor Units").
- FHST ("Fixed Head Star Trackers").
The optical telescope assembly (OTS) is basically the telescope
itself up to the instruments, including the mirrors, baffles and
optical shields, locations for instruments, and the frame supporting
these in place.
HST was launched in 1990, serviced and upgraded
by astronauts (replacing instruments) a number of times,
the final occasion in 2009.
It remains in operation in 2020 with hopes of continuing,
possibly as long as another decade.
- WF/PC ("Wide Field and Planetary Camera").
- GHRS (aka HRS, "Goddard High Resolution Spectrograph").
- HSP ("High Speed Photometer").
- FOC ("Faint Object Camera").
- FOS ("Faint Object Spectrograph").
As launched, the optics were flawed and a system to compensate
called COSTAR (Corrective Optics Space Telescope Axial Replacement)
was developed and installed in 1993.
COSTAR required an instrument bay and HSP was removed to provide that space.
All HST's current instruments have a correcting mechanism built in
and COSTAR was removed in 2009.
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Referenced by pages:
Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS)
Cosmic Evolution Survey (COSMOS)
Extended Groth Strip (EGS)
Faint Infrared Grism Survey (FIGS)
field of view (FOV)
GOODS NICMOS Survey (GNS)
Guide Star Catalog (GSC)
Hubble Deep Field (HDF)
Hubble Deep Field South (HDF-S)
Hubble Ultra-Deep Field (HUDF)
Medium Deep Survey (MDS)
protoplanetary disk (PPD)
rare designator prefixes
Ritchey-Chrétien telescope (RCT)
Space Telescope Science Institute (STScI)
Sagittarius Window Eclipsing Extrasolar Planet Search (SWEEPS)
Terrestrial Planet Finder (TPF)
Ultimate Spitzer Phase Curve Survey (USPCS)
Ultraviolet Hubble Ultra-deep Field (UVUDF)