We present a design for an active telescope for space astronomy. The telescope is capable
of both exoplanet work and general astronomy over wavelengths from∼ 100 nm up to 5 μm …

With the development of the observation technology and the improvement of resolution
requirements, a new membrane diffraction large space telescope is proposed to realize real …

The National Academies' Decadal Survey telescope studies have produced mission design
concepts that plot pathways into the future to follow on from Hubble, Spitzer, JWST and …

Terrestrial exoplanets shine in light reflected from a parent star. Optical spectra are required
to provide evidence of a life-supporting environment. Exoplanets are very faint and their …

In this paper we examine several contrast-degrading static signature sources present in
current terrestrial exoplanet Lyot Coronagraph/Telescope optical systems. These are …

The concept for EST presented in past SPIE forums will benefit significantly from the current
efforts of DARPA, NASA and several commercial organizations to develop an in-space …

Previous papers have described our concept for a large telescope that would be assembled
in space in several stages (in different configurations) over a period of fifteen to 20 years …

It is generally recognized (eg, in the National Aeronautics and Space Administration
response to recent congressional appropriations) that future space observatories must be …

There is increasing demand for space telescopes with ultralarge apertures in the order of
100 to 1000 m for space exploration. It is difficult to expand a space telescope beyond 100 m …

Several modern astrophysics and exoplanet science imagining problems require minimum
diffraction across the image plane. All large aperture ground and space telescopes today …