Results 91 to 100 of about 1,731,322 (198)

PIAA coronagraph for Origins Space telescope (OST) mid-infrared imager, spectrometer, coronagraph (MISC) instrument

Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 2018
The Mid-infrared Imager, Spectrometer Coronagraph (MISC) instrument studied for the Origins Space Telescope (OST) Mission Concept 1 is designed to observe at mid-infrared (MIR) wavelengths ranging from 5 to 38 microns for OST. In the OST Mission Concept 1 study, MISC consists of three separate optical modules providing imaging, spectroscopy, and ...
Kimberly Ennico-Smith, Thomas L. Roellig, Aoi Takahashi, Motohide Tamura, Takayuki Kotani, Naoshi Murakami, Jun Nishikawa, Olivier Guyon, Keigo Enya, Naofumi Fujishiro, Itsuki Sakon   +10 more
openaire   +2 more sources

A Refined Photometric Constraint for Exoplanet Direct Imaging Yield Estimation and Observation Scheduling

The Astronomical Journal
Science yield studies will drive the development of future direct imaging telescopes, such as the Habitable Worlds Observatory. These studies rely on a metric called completeness, which represents the fraction of planets from an assumed planet population
Corey Spohn, Dmitry Savransky, Christopher C. Stark   +2 more
doaj   +1 more source

Pushing the limits of the coronagraphic occulters on Hubble Space Telescope/Space Telescope Imaging Spectrograph

, 2019
The Hubble Space Telescope (HST)/Space Telescope Imaging Spectrograph (STIS) contains the only currently operating coronagraph in space that is not trained on the Sun.
Debes, John H., Schneider, Glenn, Ren, Bin   +2 more
core   +1 more source

Direct Images of CO2 Absorption in the Atmosphere of a Super-Jupiter: Enhanced Metallicity Suggestive of Formation in a Disk

The Astrophysical Journal Letters
It is unclear how directly imaged substellar companions with masses near the deuterium burning limit form, because these objects are rare and their bulk properties are not diagnostic of their formation.
William O. Balmer, Laurent Pueyo, Ashley Messier, Evelyn Bruinsma, Jeremy Jones, Klara Matuszewska, Marshall D. Perrin, Julien H. Girard, Jarron M. Leisenring, Kellen Lawson, Roeland P. van der Marel, Jens Kammerer, Aarynn Carter, Mathilde Mâlin, Kimberly Ward-Duong, Kielan K. W. Hoch, Emily Rickman, Sara Seager   +17 more
doaj   +1 more source

Toward-1mm depth precision with a solid state full-field range imaging system [PDF]

, 2006
Previously, we demonstrated a novel heterodyne based solid-state full-field range-finding imaging system. This system is comprised of modulated LED illumination, a modulated image intensifier, and a digital video camera. A 10 MHz drive is provided with 1
Dorrington, Adrian A., Carnegie, Dale A., Cree, Michael J.   +2 more
core   +1 more source

Shaped Pupil coronagraphic masks test and AIV report

, 2020
! The document focuses on the testing and alignment processes of Shaped Pupil coronagraphic masks for the SHARK-NIR instrument, emphasizing precision and efficiency in enhancing exoplanet imaging and circumstellar disk studies.
E. Carolo, G. Umbriaco, D. Vassallo
core   +1 more source

Experimental validation of joint phase and amplitude wave-front sensing with coronagraphic phase diversity for high-contrast imaging

, 2018
Context. The next generation of space-borne instruments dedicated to the direct detection of exoplanets requires unprecedented levels of wavefront control precision.
Jean-François Sauvage (14388303), Baptiste Paul (17493243), Olivier Herscovici-Schiller (14413998), Pierre Baudoz (15783809), Laurent M. Mugnier (14410023), Raphaël Galicher (17493240)   +5 more
core   +2 more sources

Jupiter-like planets might be common in a low-density environment. [PDF]

Nat Commun, 2023
Gratton R, Mesa D, Bonavita M, Zurlo A, Marino S, Kervella P, Desidera S, D'Orazi V, Rigliaco E.   +8 more
europepmc   +1 more source

A 20 m wide-field diffraction-limited telescope. [PDF]

Philos Trans A Math Phys Eng Sci, 2021
Eads RW, Angel JRP.
europepmc   +1 more source

Low-mass Stellar and Substellar Candidate Companions around Massive Stars in Sco OB1 and M17

The Astronomical Journal
Massive stars are recognized for their high degree of multiplicity, yet the mass ratio regime below 0.1 remains insufficiently explored. It is therefore unknown whether extremely low-mass (possibly substellar) companions can form and survive in the ...
Tinne Pauwels, Maddalena Reggiani, Hugues Sana, Laurent Mahy   +3 more
doaj   +1 more source