Tau.Neutrino said:
Dream About the Future of Big Telescopes; Monster Space Telescopes That Could Fly by the 2030s
With the recent launch of the Transiting Exoplanet Survey Satellite (TESS) – which took place on Wednesday, April 18th, 2018 – a lot of attention has been focused on the next-generation space telescopes that will be taking to space in the coming years. These include not only the James Webb Space Telescope, which is currently scheduled for launch in 2020, but some other advanced spacecraft that will be deployed by the 2030s.
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From link.
2020 Decadal Survey for Astrophysics, which included four flagship mission concepts that are currently being studied. When these missions take to space, they will pick up where missions like Hubble, Kepler, Spitzer and Chandra left off.
The Large Ultraviolet/Optical/Infrared Surveyor (LUVOIR), a giant space observatory developed in the tradition of the Hubble Space Telescope. This mission concept calls for a space telescope with a massive segmented primary mirror that measures about 15 meters in diameter as against 6.5 metres for JWST.
The Origins Space Telescope (OST). Much like the Spitzer Space Telescope and the Herschel Space Observatory, this far-infrared observatory would offer 10,000 times more sensitivity than any preceding far-infrared telescope. Its primary mirror, 9 m in diameter, would be actively cooled, keeping its mirror at a temperature of about 4 K and its detectors at a temperature of 0.05 K. To achieve this, the OST team will rely on flying layers of sunshields, four cryocoolers, and a multi-stage continuous adiabatic demagnetization refrigerator (CADR). Magapixel superconducting detectors. The OST would rely on two emerging types of detectors: Transition Edge Sensors (TESs) or Kinetic Inductance Detectors (KIDs).
The Habitable Exoplanet Imager (HabEx) would be able to conduct studies in the ultraviolet, optical and near-infrared wavelengths, and be able to block out a parent star’s brightness so that it could see light being reflected off of any planets orbiting it.
The X-ray Surveyor known as Lynx, using an X-ray microcalorimeter imaging spectrometer. X-ray photons hitting a detector’s absorders and convert their energy to heat, which is measured by a thermometer.
https://www.nasa.gov/feature/goddard/2018/2020-decadal-survey-missions-at-a-glance
Initial press release
Here is one possible solution for suppressing bright starlight with internal coronagraphic devices: a mask coated with carbon nanotubes fashioned to modify the pattern of diffracted light.
