<Table> Hubble Space Telescope <Tr> <Td_colspan="2"> The Hubble Space Telescope as seen from the departing Space Shuttle Atlantis, flying Servicing Mission 4 (STS - 125), the sixth and final Hubble mission </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Mission type </Th> <Td> Astronomy </Td> </Tr> <Tr> <Th> Operator </Th> <Td> NASA ESA STScI </Td> </Tr> <Tr> <Th> COSPAR ID </Th> <Td> 1990 - 037B </Td> </Tr> <Tr> <Th> SATCAT no . </Th> <Td> 20580 </Td> </Tr> <Tr> <Th> Website </Th> <Td> nasa.gov/hubble hubblesite.org spacetelescope.org </Td> </Tr> <Tr> <Th> Mission duration </Th> <Td> Elapsed: 27 years, 5 months, 17 days </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Spacecraft properties </Th> </Tr> <Tr> <Th> Manufacturer </Th> <Td> Lockheed (spacecraft) Perkin - Elmer (optics) </Td> </Tr> <Tr> <Th> Launch mass </Th> <Td> 11,110 kg (24,490 lb) </Td> </Tr> <Tr> <Th> </Th> <Td> 13.2 × 4.2 m (43.3 × 13.8 ft) </Td> </Tr> <Tr> <Th> Power </Th> <Td> 2,800 watts </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Start of mission </Th> </Tr> <Tr> <Th> Launch date </Th> <Td> April 24, 1990, 12: 33: 51 (1990 - 04 - 24UTC12: 33: 51) UTC </Td> </Tr> <Tr> <Th> Rocket </Th> <Td> Space Shuttle Discovery (STS - 31) </Td> </Tr> <Tr> <Th> Launch site </Th> <Td> Kennedy LC - 39B </Td> </Tr> <Tr> <Th> Deployment date </Th> <Td> April 25, 1990 </Td> </Tr> <Tr> <Th> Entered service </Th> <Td> May 20, 1990 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> End of mission </Th> </Tr> <Tr> <Th> Decay date </Th> <Td> estimated 2030--2040 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Orbital parameters </Th> </Tr> <Tr> <Th> Reference system </Th> <Td> Geocentric </Td> </Tr> <Tr> <Th> Regime </Th> <Td> Low Earth </Td> </Tr> <Tr> <Th> Semi-major axis </Th> <Td> 6,919 km (4,299 mi) </Td> </Tr> <Tr> <Th> Eccentricity </Th> <Td> 0.000283 </Td> </Tr> <Tr> <Th> Perigee </Th> <Td> 539 km (335 mi) </Td> </Tr> <Tr> <Th> Apogee </Th> <Td> 543 km (337 mi) </Td> </Tr> <Tr> <Th> Inclination </Th> <Td> 28.47 ° </Td> </Tr> <Tr> <Th> Period </Th> <Td> 95.47 minutes </Td> </Tr> <Tr> <Th> RAAN </Th> <Td> 342.12 ° </Td> </Tr> <Tr> <Th> Argument of perigee </Th> <Td> 159.60 ° </Td> </Tr> <Tr> <Th> Mean anomaly </Th> <Td> 334.64 ° </Td> </Tr> <Tr> <Th> Mean motion </Th> <Td> 15.08 rev / day </Td> </Tr> <Tr> <Th> Velocity </Th> <Td> 7.59 km / s (4.72 mi / s) </Td> </Tr> <Tr> <Th> Epoch </Th> <Td> September 21, 2016, 13: 51: 39 UTC </Td> </Tr> <Tr> <Th> Revolution no . </Th> <Td> 24,968 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Main telescope </Th> </Tr> <Tr> <Th> Type </Th> <Td> Ritchey--Chrétien reflector </Td> </Tr> <Tr> <Th> Diameter </Th> <Td> 2.4 m (7.9 ft) </Td> </Tr> <Tr> <Th> Focal length </Th> <Td> 57.6 m (189 ft) </Td> </Tr> <Tr> <Th> Focal ratio </Th> <Td> f / 24 </Td> </Tr> <Tr> <Th> Collecting area </Th> <Td> 4.5 m (48 sq ft) </Td> </Tr> <Tr> <Th> Wavelengths </Th> <Td> Near - infrared, visible light, ultraviolet </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th_colspan="2"> (show) Instruments </Th> </Tr> <Tr> <Th> NICMOS </Th> <Td> Near Infrared Camera and Multi-Object Spectrometer </Td> </Tr> <Tr> <Th> ACS </Th> <Td> Advanced Camera for Surveys </Td> </Tr> <Tr> <Th> WFC3 </Th> <Td> Wide Field Camera 3 </Td> </Tr> <Tr> <Th> COS </Th> <Td> Cosmic Origins Spectrograph </Td> </Tr> <Tr> <Th> STIS </Th> <Td> Space Telescope Imaging Spectrograph </Td> </Tr> <Tr> <Th> FGS </Th> <Td> Fine Guidance Sensor </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> The Hubble Space Telescope as seen from the departing Space Shuttle Atlantis, flying Servicing Mission 4 (STS - 125), the sixth and final Hubble mission </Td> </Tr>

The hst is mainly what kind of telescope
find me the text answering this question