Soft x-ray mirrors onboard the NeXT satellite

Takashi Okajima, Peter J. Serlemitsos, Yang Soong, Kai Wing Chan, Rob Petre, Yasushi Ogasaka, Takuya Miyazawa, Akihiro Furuzawa, Hideyo Kunieda, Manabu Ishida, Yoshitomo Maeda, Keisuke Tamura, Hideyuki Mori, Hisamitsu Awaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

The New Exploration X-ray Telescope (NeXT) is an X-ray astronomical observatory slated to be launched from Japan in 2013. Its objectives range from high resolution imaging and spectroscopy below ~12 keV to studying the hard X-ray sky up to ~70 keV. To accomplish these goals, it will carry, among other instruments, 4 grazing incidence, imaging telescopes, two covering the soft X-ray band and the remaining the higher energies. The soft X-ray telescopes will be similar to ones flown onboard Suzaku, with a larger outer diameter (45 cm) and longer focal length (6 m). The NASA's GSFC foil mirror group is collaborating with the Nagoya University and ISAS/JAXA in the implementation of the the soft X-ray mirrors. Our science driven goal is a <1.3' Half Power Diameter (HPD) Point Spread Function, improved from Suzaku ~1.7' HPD. We address important area in the fabrication process where we plan to make changes; (1) substrate shaping, (2) replication process, (3) reflector assembly, (4) alignment bar accuracy, and (5) focal length miss match among segments. Having done some of them, we measured 1.26' HPD for 60-pair quadrant reflectors. But it still includes bad sectors (>1.8' HPD) towards the quadrant boundary, while most of middle sectors are at 1' HPD level. The bad sectors can be corrected with new assembly approach where we actively tune and then fix reflectors at their right position or whole conical shell reflectors instead of segmented ones. In this proceeding, we present a proposed NeXT soft X-ray telescope performance, report the current status of the development and introduce the new whole shell mirror.

Original languageEnglish
Title of host publicationSpace Telescopes and Instrumentation 2008
Subtitle of host publicationUltraviolet to Gamma Ray
DOIs
Publication statusPublished - 01-12-2008
EventSpace Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray - Marseille, France
Duration: 23-06-200828-06-2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7011
ISSN (Print)0277-786X

Other

OtherSpace Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray
CountryFrance
CityMarseille
Period23-06-0828-06-08

Fingerprint

X-ray Mirror
X-ray Telescopes
Soft X-ray
Telescopes
Satellites
telescopes
mirrors
X rays
Reflector
Shell
Mirror
Sector
x rays
High Resolution Spectroscopy
High Resolution Imaging
Hard X-ray
Quadrant
NASA
Observatory
Japan

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Okajima, T., Serlemitsos, P. J., Soong, Y., Chan, K. W., Petre, R., Ogasaka, Y., ... Awaki, H. (2008). Soft x-ray mirrors onboard the NeXT satellite. In Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray [70112X] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7011). https://doi.org/10.1117/12.789599
Okajima, Takashi ; Serlemitsos, Peter J. ; Soong, Yang ; Chan, Kai Wing ; Petre, Rob ; Ogasaka, Yasushi ; Miyazawa, Takuya ; Furuzawa, Akihiro ; Kunieda, Hideyo ; Ishida, Manabu ; Maeda, Yoshitomo ; Tamura, Keisuke ; Mori, Hideyuki ; Awaki, Hisamitsu. / Soft x-ray mirrors onboard the NeXT satellite. Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray. 2008. (Proceedings of SPIE - The International Society for Optical Engineering).
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author = "Takashi Okajima and Serlemitsos, {Peter J.} and Yang Soong and Chan, {Kai Wing} and Rob Petre and Yasushi Ogasaka and Takuya Miyazawa and Akihiro Furuzawa and Hideyo Kunieda and Manabu Ishida and Yoshitomo Maeda and Keisuke Tamura and Hideyuki Mori and Hisamitsu Awaki",
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Okajima, T, Serlemitsos, PJ, Soong, Y, Chan, KW, Petre, R, Ogasaka, Y, Miyazawa, T, Furuzawa, A, Kunieda, H, Ishida, M, Maeda, Y, Tamura, K, Mori, H & Awaki, H 2008, Soft x-ray mirrors onboard the NeXT satellite. in Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray., 70112X, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7011, Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray, Marseille, France, 23-06-08. https://doi.org/10.1117/12.789599

Soft x-ray mirrors onboard the NeXT satellite. / Okajima, Takashi; Serlemitsos, Peter J.; Soong, Yang; Chan, Kai Wing; Petre, Rob; Ogasaka, Yasushi; Miyazawa, Takuya; Furuzawa, Akihiro; Kunieda, Hideyo; Ishida, Manabu; Maeda, Yoshitomo; Tamura, Keisuke; Mori, Hideyuki; Awaki, Hisamitsu.

Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray. 2008. 70112X (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7011).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Soft x-ray mirrors onboard the NeXT satellite

AU - Okajima, Takashi

AU - Serlemitsos, Peter J.

AU - Soong, Yang

AU - Chan, Kai Wing

AU - Petre, Rob

AU - Ogasaka, Yasushi

AU - Miyazawa, Takuya

AU - Furuzawa, Akihiro

AU - Kunieda, Hideyo

AU - Ishida, Manabu

AU - Maeda, Yoshitomo

AU - Tamura, Keisuke

AU - Mori, Hideyuki

AU - Awaki, Hisamitsu

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N2 - The New Exploration X-ray Telescope (NeXT) is an X-ray astronomical observatory slated to be launched from Japan in 2013. Its objectives range from high resolution imaging and spectroscopy below ~12 keV to studying the hard X-ray sky up to ~70 keV. To accomplish these goals, it will carry, among other instruments, 4 grazing incidence, imaging telescopes, two covering the soft X-ray band and the remaining the higher energies. The soft X-ray telescopes will be similar to ones flown onboard Suzaku, with a larger outer diameter (45 cm) and longer focal length (6 m). The NASA's GSFC foil mirror group is collaborating with the Nagoya University and ISAS/JAXA in the implementation of the the soft X-ray mirrors. Our science driven goal is a <1.3' Half Power Diameter (HPD) Point Spread Function, improved from Suzaku ~1.7' HPD. We address important area in the fabrication process where we plan to make changes; (1) substrate shaping, (2) replication process, (3) reflector assembly, (4) alignment bar accuracy, and (5) focal length miss match among segments. Having done some of them, we measured 1.26' HPD for 60-pair quadrant reflectors. But it still includes bad sectors (>1.8' HPD) towards the quadrant boundary, while most of middle sectors are at 1' HPD level. The bad sectors can be corrected with new assembly approach where we actively tune and then fix reflectors at their right position or whole conical shell reflectors instead of segmented ones. In this proceeding, we present a proposed NeXT soft X-ray telescope performance, report the current status of the development and introduce the new whole shell mirror.

AB - The New Exploration X-ray Telescope (NeXT) is an X-ray astronomical observatory slated to be launched from Japan in 2013. Its objectives range from high resolution imaging and spectroscopy below ~12 keV to studying the hard X-ray sky up to ~70 keV. To accomplish these goals, it will carry, among other instruments, 4 grazing incidence, imaging telescopes, two covering the soft X-ray band and the remaining the higher energies. The soft X-ray telescopes will be similar to ones flown onboard Suzaku, with a larger outer diameter (45 cm) and longer focal length (6 m). The NASA's GSFC foil mirror group is collaborating with the Nagoya University and ISAS/JAXA in the implementation of the the soft X-ray mirrors. Our science driven goal is a <1.3' Half Power Diameter (HPD) Point Spread Function, improved from Suzaku ~1.7' HPD. We address important area in the fabrication process where we plan to make changes; (1) substrate shaping, (2) replication process, (3) reflector assembly, (4) alignment bar accuracy, and (5) focal length miss match among segments. Having done some of them, we measured 1.26' HPD for 60-pair quadrant reflectors. But it still includes bad sectors (>1.8' HPD) towards the quadrant boundary, while most of middle sectors are at 1' HPD level. The bad sectors can be corrected with new assembly approach where we actively tune and then fix reflectors at their right position or whole conical shell reflectors instead of segmented ones. In this proceeding, we present a proposed NeXT soft X-ray telescope performance, report the current status of the development and introduce the new whole shell mirror.

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M3 - Conference contribution

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T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Space Telescopes and Instrumentation 2008

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Okajima T, Serlemitsos PJ, Soong Y, Chan KW, Petre R, Ogasaka Y et al. Soft x-ray mirrors onboard the NeXT satellite. In Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray. 2008. 70112X. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.789599