Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph

Kenshi Yanagisawa; Chihiro Tokoku; Kentaro Motohara; Shinobu Ozaki; Yoshito Ono; Yosuke Minowa; Takashi Moriya; Masami Ouchi; Nozomu Tominaga; Masayuki Tanaka; Yutaka Hayano; Yusei Koyama; Sadman Ali; Masaomi Tanaka; Masayuki Akiyama; Tohru Nagao; Yoshiki Matsuoka; Kosuke Kushibiki; Shogo Homan; Akino Yasuda; Tomoya Yukino; Riku Sato; Kensho Tanaka; Tomoyasu Yamamuro; Michitoshi Yoshida

doi:10.1117/12.3016873

Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph

Kenshi Yanagisawa^*, Chihiro Tokoku, Kentaro Motohara, Shinobu Ozaki, Yoshito Ono, Yosuke Minowa, Takashi Moriya, Masami Ouchi, Nozomu Tominaga, Masayuki Tanaka, Yutaka Hayano, Yusei Koyama, Sadman Ali, Masaomi Tanaka, Masayuki Akiyama, Tohru Nagao, Yoshiki Matsuoka, Kosuke Kushibiki, Shogo Homan, Akino YasudaTomoya Yukino, Riku Sato, Kensho Tanaka, Tomoyasu Yamamuro, Michitoshi Yoshida

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, we present our approach regarding the compensation of defective pixels in the infrared array detector used in the NINJA spectrograph for the Subaru Telescope. While it is typical to use a detector with minimal defective pixels for infrared spectrographs, our HAWAII-2RG detector has a central area with a defective pixel rate of 10%. Therefore, we compensate for defective pixels by mechanically shifting the detector along the focal plane in the direction of dispersion. This approach applies the concept of dithering in imaging observation to a spectrograph, and the shifting mechanism is designed to have a maximum movement distance of 8 mm. We present the expected performance of the compensation and the actual mechanical structure fabricated.

Original language	English
Title of host publication	Ground-Based and Airborne Instrumentation for Astronomy X
Editors	Julia J. Bryant, Kentaro Motohara, Joel R. Vernet
Publisher	SPIE
ISBN (Electronic)	9781510675155
DOIs	https://doi.org/10.1117/12.3016873
Publication status	Published - 2024
Event	Ground-Based and Airborne Instrumentation for Astronomy X 2024 - Yokohama, Japan Duration: 2024 Jun 16 → 2024 Jun 21

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	13096
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Ground-Based and Airborne Instrumentation for Astronomy X 2024
Country/Territory	Japan
City	Yokohama
Period	24/6/16 → 24/6/21

Keywords

HAWAII-2RG
Near-Infrared
Pixel Compensation
Spectrograph

ASJC Scopus subject areas

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

Access to Document

10.1117/12.3016873

Cite this

Yanagisawa, K., Tokoku, C., Motohara, K., Ozaki, S., Ono, Y., Minowa, Y., Moriya, T., Ouchi, M., Tominaga, N., Tanaka, M., Hayano, Y., Koyama, Y., Ali, S., Tanaka, M., Akiyama, M., Nagao, T., Matsuoka, Y., Kushibiki, K., Homan, S., ... Yoshida, M. (2024). Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph. In J. J. Bryant, K. Motohara, & J. R. Vernet (Eds.), Ground-Based and Airborne Instrumentation for Astronomy X Article 130966R (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13096). SPIE. https://doi.org/10.1117/12.3016873

Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph. / Yanagisawa, Kenshi; Tokoku, Chihiro; Motohara, Kentaro et al.
Ground-Based and Airborne Instrumentation for Astronomy X. ed. / Julia J. Bryant; Kentaro Motohara; Joel R. Vernet. SPIE, 2024. 130966R (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13096).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yanagisawa, K, Tokoku, C, Motohara, K, Ozaki, S, Ono, Y, Minowa, Y, Moriya, T, Ouchi, M, Tominaga, N, Tanaka, M, Hayano, Y, Koyama, Y, Ali, S, Tanaka, M, Akiyama, M, Nagao, T, Matsuoka, Y, Kushibiki, K, Homan, S, Yasuda, A, Yukino, T, Sato, R, Tanaka, K, Yamamuro, T & Yoshida, M 2024, Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph. in JJ Bryant, K Motohara & JR Vernet (eds), Ground-Based and Airborne Instrumentation for Astronomy X., 130966R, Proceedings of SPIE - The International Society for Optical Engineering, vol. 13096, SPIE, Ground-Based and Airborne Instrumentation for Astronomy X 2024, Yokohama, Japan, 24/6/16. https://doi.org/10.1117/12.3016873

Yanagisawa K, Tokoku C, Motohara K, Ozaki S, Ono Y, Minowa Y et al. Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph. In Bryant JJ, Motohara K, Vernet JR, editors, Ground-Based and Airborne Instrumentation for Astronomy X. SPIE. 2024. 130966R. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.3016873

Yanagisawa, Kenshi ; Tokoku, Chihiro ; Motohara, Kentaro et al. / Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph. Ground-Based and Airborne Instrumentation for Astronomy X. editor / Julia J. Bryant ; Kentaro Motohara ; Joel R. Vernet. SPIE, 2024. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph",

abstract = "In this paper, we present our approach regarding the compensation of defective pixels in the infrared array detector used in the NINJA spectrograph for the Subaru Telescope. While it is typical to use a detector with minimal defective pixels for infrared spectrographs, our HAWAII-2RG detector has a central area with a defective pixel rate of 10\%. Therefore, we compensate for defective pixels by mechanically shifting the detector along the focal plane in the direction of dispersion. This approach applies the concept of dithering in imaging observation to a spectrograph, and the shifting mechanism is designed to have a maximum movement distance of 8 mm. We present the expected performance of the compensation and the actual mechanical structure fabricated.",

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AU - Yanagisawa, Kenshi

AU - Tokoku, Chihiro

AU - Motohara, Kentaro

AU - Ozaki, Shinobu

AU - Ono, Yoshito

AU - Minowa, Yosuke

AU - Moriya, Takashi

AU - Ouchi, Masami

AU - Tominaga, Nozomu

AU - Tanaka, Masayuki

AU - Hayano, Yutaka

AU - Koyama, Yusei

AU - Ali, Sadman

AU - Tanaka, Masaomi

AU - Akiyama, Masayuki

AU - Nagao, Tohru

AU - Matsuoka, Yoshiki

AU - Kushibiki, Kosuke

AU - Homan, Shogo

AU - Yasuda, Akino

AU - Yukino, Tomoya

AU - Sato, Riku

AU - Tanaka, Kensho

AU - Yamamuro, Tomoyasu

AU - Yoshida, Michitoshi

PY - 2024

Y1 - 2024

N2 - In this paper, we present our approach regarding the compensation of defective pixels in the infrared array detector used in the NINJA spectrograph for the Subaru Telescope. While it is typical to use a detector with minimal defective pixels for infrared spectrographs, our HAWAII-2RG detector has a central area with a defective pixel rate of 10%. Therefore, we compensate for defective pixels by mechanically shifting the detector along the focal plane in the direction of dispersion. This approach applies the concept of dithering in imaging observation to a spectrograph, and the shifting mechanism is designed to have a maximum movement distance of 8 mm. We present the expected performance of the compensation and the actual mechanical structure fabricated.

AB - In this paper, we present our approach regarding the compensation of defective pixels in the infrared array detector used in the NINJA spectrograph for the Subaru Telescope. While it is typical to use a detector with minimal defective pixels for infrared spectrographs, our HAWAII-2RG detector has a central area with a defective pixel rate of 10%. Therefore, we compensate for defective pixels by mechanically shifting the detector along the focal plane in the direction of dispersion. This approach applies the concept of dithering in imaging observation to a spectrograph, and the shifting mechanism is designed to have a maximum movement distance of 8 mm. We present the expected performance of the compensation and the actual mechanical structure fabricated.

KW - HAWAII-2RG

KW - Near-Infrared

KW - Pixel Compensation

KW - Spectrograph

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BT - Ground-Based and Airborne Instrumentation for Astronomy X

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Compensation of defective pixels by mechanical shift of an NIR array detector used in the NINJA echelle spectrograph

Abstract

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