List of X-ray space telescopes

This list contains space-borne observatories as well as X-ray instruments as part of a larger mission, both past, present and in the proposal stage.

Sometimes X-Ray observations are made from a near-space environment on sounding rockets or high-altitude balloons.

• Normal Incidence X-ray Telescope (series of sounding rocket payloads, flown in the late 1980s and 1990s)
• Multi-spectral solar telescope array (MSSTA) (series of sounding rocket payloads, flown in the 1990s and early 2000s)
• Polarised Gamma-ray Observer (PoGOLite) (balloon-borne astroparticle physics experiment, flown 2011-2013)

• 
  Skylab S-54 instrument, an X-ray telescope
• 
  Chandra (AXAF) checks out a pulsar with its focusing X-ray optics
• 
  NuStar's lens for focusing X-rays
• 
  Wolter telescopes of Types I, II, and III

• List of telescope types
• Lists of telescopes
• Calorimetric Electron Telescope (telescope type)
• Cosmic-ray observatory (mission type)
• Phase-contrast X-ray imaging (general term)
• Wolter telescope (telescope type)
• X-ray astronomy satellite (mission type)
• X-ray spectroscopy (general term)
• Lists of spacecraft

• Comparison with of X-ray satellites
• Comparison of XMM-Newton EPIC, Chandra ACIS-S3, ASCA SIS and GIS, and ROSAT PSPC Results for G21.5-0.9, 1E0102.2-7219, and MS1-54.4-0321