The Solar X-ray Imager on GOES-13: design, analysis, and on-orbit performance

Harvey, James E.; Krywonos, Andrey; Atanassova, Martina; Thompson, Patrick L.

doi:10.1117/12.736870

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…Several dedicated satellites (RHESSI, SOHO, GOES etc.) (Lin et al 1998, Domingo et al 1994, Harvey 2007) have been launched to understand its behavior in a wide energy band of electromagnetic radiation. Even though its surface temperature is only ∼6000 K, it emits X-rays and γ-rays up to a few MeV.…”

Section: Goals and Scientific Objectives Of Rt-2/s And Rt-2/gmentioning

confidence: 99%

Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation I: ground calibration of RT-2/S and RT-2/G

et al. 2010

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Phoswich detectors (RT-2/S & RT-2/G) are major scientific payloads of the RT-2 Experiment onboard the CORONAS-PHOTON mission, which was launched into a polar Low Earth Orbit of around 550 km on 2009 January 30. These RT-2 instruments are designed and developed to observe solar flares in hard X-rays and to understand the energy transport processes associated with these flares. Apart from this, these instruments are capable of observing Gamma Ray Bursts (GRBs) and Cosmic diffuse X-ray background (CDXRB). Both detectors consist of identical NaI(Tl) and CsI(Na) scintillation crystals in a Phoswich combination, having the same diameter (116 mm) but different thicknesses. The normal working energy range is from 15 keV to 150 keV, but may be extendable up to ∼ 1 MeV. In this paper, we present the RT-2/S and RT-2/G instruments and discuss their testing and calibration results. We used different radio-active sources to calibrate both detectors. The radio-active source

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Section: Goals and Scientific Objectives Of Rt-2/s And Rt-2/gmentioning

confidence: 99%

Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation I: ground calibration of RT-2/S and RT-2/G

et al. 2010

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“…A detailed analysis of detector effects was also included [52]. Figure 11 shows the comparison of the image quality predictions and experimental on-orbit data taken shortly after launch [51].…”

Section: Systems Engineering Analysis Of Image Qualitymentioning

confidence: 99%

Integrating optical fabrication and metrology into the optical design process

Harvey¹

2015

Appl. Opt.

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The recent validation of a generalized linear systems formulation of surface scatter theory and an analysis of image degradation due to surface scatter in the presence of aberrations has provided credence to the development of a systems engineering analysis of image quality as degraded not only by diffraction effects and geometrical aberrations, but to scattering effects due to residual optical fabrication errors as well. This generalized surface scatter theory provides insight and understanding by characterizing surface scatter behavior with a surface transfer function closely related to the modulation transfer function of classical image formation theory. Incorporating the inherently band-limited relevant surface roughness into the surface scatter theory provides mathematical rigor into surface scatter analysis, and implementing a fast Fourier transform algorithm with logarithmically spaced data points facilitates the practical calculation of scatter behavior from surfaces with a large dynamic range of relevant spatial frequencies. These advances, combined with the continuing increase in computer speed, leave the optical design community in a position to routinely derive the optical fabrication tolerances necessary to satisfy specific image quality requirements during the design phase of a project; i.e., to integrate optical metrology and fabrication into the optical design process.

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“…For completeness, the table includes (in the shaded rows) information on orbiting high-resolution x-ray telescopes for solar-physics research (Yohkoh SXT 56,57,58 and Hinode XRT 59,60 ) and for space-weather monitoring (GOES SXI 61,62,63 ). However, such solar x-ray telescopes are much smaller and less complex than those needed for x-ray astronomy.…”

Section: Past and Current Missionsmentioning

confidence: 99%

High-resolution x-ray telescopes

O’Dell¹,

Brissenden

Davis

et al. 2010

SPIE Proceedings

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High-energy astrophysics is a relatively young scientific field, made possible by space-borne telescopes. During the half-century history of x-ray astronomy, the sensitivity of focusing x-ray telescopes-through finer angular resolution and increased effective area-has improved by a factor of a 100 million. This technological advance has enabled numerous exciting discoveries and increasingly detailed study of the high-energy universe-including accreting (stellar-mass and super-massive) black holes, accreting and isolated neutron stars, pulsar-wind nebulae, shocked plasma in supernova remnants, and hot thermal plasma in clusters of galaxies. As the largest structures in the universe, galaxy clusters constitute a unique laboratory for measuring the gravitational effects of dark matter and of dark energy. Here, we review the history of high-resolution x-ray telescopes and highlight some of the scientific results enabled by these telescopes. Next, we describe the planned next-generation x-ray-astronomy facility-the International X-ray Observatory (IXO). We conclude with an overview of a concept for the next next-generation facility-Generation X. The scientific objectives of such a mission will require very large areas (about 10000 m2) of highly-nested lightweight grazing-incidence mirrors with exceptional (about 0.1-arcsecond) angular resolution. Achieving this angular resolution with lightweight mirrors will likely require on-orbit adjustment of alignment and figure.Comment: 19 pages, 11 figures, SPIE Conference 7803 "Adaptive X-ray Optics", part of SPIE Optics+Photonics 2010, San Diego CA, 2010 August 2-

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The Solar X-ray Imager on GOES-13: design, analysis, and on-orbit performance

Cited by 7 publications

References 12 publications

Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation I: ground calibration of RT-2/S and RT-2/G

Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation I: ground calibration of RT-2/S and RT-2/G

Integrating optical fabrication and metrology into the optical design process

High-resolution x-ray telescopes

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