Design and development of WFOS, the Wide-Field Optical Spectrograph for the Thirty Meter Telescope Article Swipe
Charles C. Steidel
,
Eric W. Peng
,
Jason Fucik
,
Reston Nash
,
Stephen Kaye
,
George H. Jacoby
,
Bernard Délabre
,
Ramya Sethuram
,
Devika Divakar
,
Hari Mohan Varshney
,
T. Sivarani
,
Fumihiro Uraguchi
,
Shinobu Ozaki
,
Hangxin Ji
,
Tao Lv
,
Kent Chiu
,
Qinfeng Zhu
,
David R. Andersen
,
John Miles
,
Davide Lasi
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1117/12.2629464
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1117/12.2629464
We present the current design of WFOS, a wide-field UV/optical (0.31-1.0 mu m) imaging spectrograph planned for first-light on the TMT International Observatory 30 m telescope. WFOS is optimized for high sensitivity across the entire optical waveband for low-to-moderate resolution (R similar to 1500-5000) long-slit and multi-slit spectroscopy of very faint targets over a contiguous field of view of 8'.3x3'.0 at the f/15 Nasmyth focus of TMT. A key design goal for WFOS is stability and repeatability in all observing modes, made possible by its gravity-invariant opto-mechanical structure, with a vertical rotation axis and all reconfigurable components moving only in planes defined by tiered optical benches parallel to the Nasmyth platform. WFOS's optics include a linear ADC correcting a 9' diameter field, including both the science FoV and 4 patrolling acquisition, guiding, and wavefront sensing camera systems; a novel 2-mirror reflective collimator allowing the science FoV to be centered on the telescope optical axis; a dichroic beamsplitter dividing the collimated beam into 2 wavelength-optimized spectrometer channels (blue: 0.31-0.56 mu m; red: 0.54-1.04 mu m); selectable transmissive dispersers (VPH and/or VBG) with remotely configurable grating tilt (angle of incidence) and camera articulation that enable optimization of diffraction efficiency and wavelength coverage in each channel; all-refractive, wavelength-optimized f/2 spectrograph cameras, and UV/blue and red-optimized detector systems. The predicted instrumental throughput of WFOS for spectroscopy averages > 56% over the full 0.31-1 mu m range, from the ADC to the detector. When combined with the 30 m TMT aperture, WFOS will realize a factor of similar to 20 gain in sensitivity compared to the current state of the art on 8-10 m-class telescopes.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1117/12.2629464
- OA Status
- green
- Cited By
- 5
- References
- 3
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4293282805
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4293282805Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1117/12.2629464Digital Object Identifier
- Title
-
Design and development of WFOS, the Wide-Field Optical Spectrograph for the Thirty Meter TelescopeWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-08-24Full publication date if available
- Authors
-
Charles C. Steidel, Eric W. Peng, Jason Fucik, Reston Nash, Stephen Kaye, George H. Jacoby, Bernard Délabre, Ramya Sethuram, Devika Divakar, Hari Mohan Varshney, T. Sivarani, Fumihiro Uraguchi, Shinobu Ozaki, Hangxin Ji, Tao Lv, Kent Chiu, Qinfeng Zhu, David R. Andersen, John Miles, Davide LasiList of authors in order
- Landing page
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https://doi.org/10.1117/12.2629464Publisher landing page
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YesWhether a free full text is available
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greenOpen access status per OpenAlex
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https://ir.opt.ac.cn/handle/181661/96207Direct OA link when available
- Concepts
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Optics, Spectrograph, Physics, Telescope, Collimator, Field of view, Dichroic glass, Spectrometer, Collimated light, Adaptive optics, Beam splitter, Cassegrain reflector, Wavefront sensor, Laser, Astronomy, Spectral lineTop concepts (fields/topics) attached by OpenAlex
- Cited by
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5Total citation count in OpenAlex
- Citations by year (recent)
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2025: 1, 2024: 4Per-year citation counts (last 5 years)
- References (count)
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3Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.WFOS&#39;s | 111 |
| abstract_inverted_index.reconfigurable | 95 |
| abstract_inverted_index.all-refractive, | 203 |
| abstract_inverted_index.low-to-moderate | 38 |
| abstract_inverted_index.opto-mechanical | 86 |
| abstract_inverted_index.gravity-invariant | 85 |
| abstract_inverted_index.wavelength-optimized | 163, 204 |
| abstract_inverted_index.telescopes.</p> | 269 |
| abstract_inverted_index.8&#39;.3x3&#39;.0 | 59 |
| cited_by_percentile_year.max | 98 |
| cited_by_percentile_year.min | 91 |
| countries_distinct_count | 4 |
| institutions_distinct_count | 20 |
| citation_normalized_percentile.value | 0.96692913 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | True |