Howard A. Bushouse
Goddard Space Flight Center
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Publication
Featured researches published by Howard A. Bushouse.
Archive | 2006
Massimo Robberto; Sylvia M. Baggett; Rebecca Blackmon; Thomas M. Brown; Howard A. Bushouse; Gregory Delo; Donald F. Figer; Roger Foltz; George Hartig; Bryan Hilbert; Robert J. Hill; Scott D. Johnson; Randy A. Kimble; John W. Mackenty; Eliot M. Malumuth; Elizabeth J. Polidan; Sam Reed; Anne Marie Russell; Augustyn Waczynski; Yiting Wen
High-energy particles that induce a glow on the ZnCdTe substrate of the HgCdTe detectors of WFC3 may increase the background noise and reduce the scientific performance of the instrument. To eliminate this problem, a second generation of infrared detectors with substrate removed is under construction. Early tests indicate that the glow problem is eliminated and the quantum efficiency increases dramatically at shorter wavelengths, potentially providing a substantial improvement in the limiting sensitivity of the instrument.
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave | 2018
Joseph D. Long; Brian York; J. H. Girard; Laurent Pueyo; William P. Blair; Brian Brooks; Keira Brooks; Robert A. Brown; Howard A. Bushouse; Alicia Canipe; Christine Chen; Kyle Van Gorkom; Brendan Hagan; B. N. Hilbert; Dean C. Hines; Jarron M. Leisenring; Marshall D. Perrin; Klaus Pontoppidan; Abhijith Rajan; Adric Riedel; John Arthur Stansberry; Rémi Soummer; Christopher C. Stark; Matteo Correnti; Bryony Nickson
The James Webb Space Telescope (JWST) and its suite of instruments, modes and high contrast capabilities will enable imaging and characterization of faint and dusty astrophysical sources1-3 (exoplanets, proto-planetary and debris disks, dust shells, etc.) in the vicinity of hosts (stars of all sorts, active galactic nuclei, etc.) with an unprecedented combination of sensitivity and angular resolution at wavelengths beyond 2 μm. Two of its four instruments, NIRCam4, 5 and MIRI,6 feature coronagraphs7, 8 for wavelengths from 2 to 23 μm. JWST will stretch the current parameter space (contrast at a given separation) towards the infrared with respect to the Hubble Space Telescope (HST) and in sensitivity with respect to what is currently achievable from the ground with the best adaptive optics (AO) facilities. The Coronagraphs Working Group at the Space Telescope Science Institute (STScI) along with the Instruments Teams and internal/external partners coordinates efforts to provide the community with the best possible preparation tools, documentation, pipelines, etc. Here we give an update on user support and operational aspects related to coronagraphy. We aim at demonstrating an end to end observing strategy and data management chain for a few science use cases involving coronagraphs. This includes the choice of instrument modes as well as the observing and point-spread function (PSF) subtraction strategies (e.g. visibility, reference stars selection tools, small grid dithers), the design of the proposal with the Exposure Time Calculator (ETC), and the Astronomers Proposal Tool (APT), the generation of realistic simulated data at small working angles and the generation of high level, science-grade data products enabling calibration and state of the art data-processing.
Archive | 2004
Neill Reid; Frank Bartko; Sylvia M. Baggett; Timothy X. Brown; Howard A. Bushouse; George F. Hartig; B. N. Hilbert; Olivia L. Lupie; Massimo Robberto; Massimo Stiavelli
Archive | 2009
Vera Kozhurina-Platais; Colin R. Cox; Brian McLean; Larry D. Petro; Linda Lou Dressel; Howard A. Bushouse
Archive | 2009
Elena Sabbi; Jason S. Kalirai; Andre R. Martel; Susana Elizabeth Deustua; Tiffany M. Borders; Howard A. Bushouse; B. N. Hilbert; J. Kim Quijano; Vera Kozhurina-Platais; John W. MacKenty; Peter Rankin McCullough; Cheryl M. Pavlovsky; Larry Petro; Abhijith Rajan; Adam G. Riess
Archive | 1999
Howard A. Bushouse; Christopher J. Skinner; John W. MacKenty
Archive | 2011
Michael J. Dulude; Sylvia M. Baggett; Howard A. Bushouse; B. N. Hilbert
Archive | 2011
M. W. Kummel; Harald Kuntschner; Jeremy R. Walsh; Howard A. Bushouse
Archive | 2010
Cheryl M. Pavlovsky; Sylvia M. Baggett; Tiffany M. Borders; Howard A. Bushouse; Tomas Dahlen; Michael J. Dulude; B. N. Hilbert; Jasonjot Singh Kalirai; Vera Kozhurina-Platais; Jennifer Mack; John W. MacKenty; Norbert Pirzkal; Abhijith Rajan; Elena Sabbi; Aline Carneiro Viana
Archive | 2009
Vera Kozhurina-Platais; Colin R. Cox; Brian McLean; Larry D. Petro; Linda Lou Dressel; Howard A. Bushouse; Elena Sabbi