Recommended optical system design for the SSST

Tan, Hao; Ma, Donglin

doi:10.1364/ao.387948

Cited by 6 publications

(2 citation statements)

References 25 publications

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“…For instance, the Cosmological Evolution Survey (COSMOS) [5,6] using the Hubble Space Telescope (HST) and many ground-based facilities have revolutionized the eld of galaxy evolution even though it covers only 2 square degrees of the sky. Meanwhile, spectroscopic survey telescopes with large FOV and multiplex capability also contribute signi cantly to the studies of dark energy & dark matter, stellar physics, gravitational wave cosmology, the structure and evolution of our Milky Way, and many other areas [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Conceptual Design of the Optical System of the 6.5m Wide Field MUltiplexed Survey Telescope with Excellent Image Quality

Zhang

Jiang

Shectman

et al. 2022

Preprint

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Astrophysics and cosmology in the coming decades urgently need a large field-of-view (FOV), highly multiplexed spectroscopic survey telescope satisfying challenging image quality and stability requirements. The 6.5m MUltiplexed Survey Telescope (MUST) proposed by Tsinghua University will be constructed on the Saishiteng Mountain of Northwest China to improve the spectroscopic survey capability of ground-based optical telescopes. In this paper, we demonstrate the conceptual design of the optical system of MUST. MUST will adopt a 6.5m primary mirror, a 2.45m secondary mirror, and a multiple-element widefield corrector (WFC) to ensure excellent image quality with an 80% encircled energy size of image spots less than ~ 0.6 arcsec in diameter for the entire 3° FOV and the whole 50° zenith angle range. Thanks to its compact 6.5m Ritchey-Chretien system and 20000 optical fibers on its Cassegrain focus, MUST will carry out state-of-the-art wide-field spectroscopic surveys with efficiency ~ 19 times higher than the Dark Energy Spectroscopic Instrument (DESI) using a measure proposed by Ellis et al. Upon completion around 2029, MUST will be one of the world's largest and most advanced wide-field spectroscopic survey telescopes and a new essential reference for the future development of wide-field survey telescopes. It will enable significant advances in many fields in astrophysics and cosmology.

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Section: Introductionmentioning

confidence: 99%

Conceptual Design of the Optical System of the 6.5m Wide Field MUltiplexed Survey Telescope with Excellent Image Quality

Zhang

Jiang

Shectman

et al. 2022

Preprint

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show abstract

“…SSST aims to perform an efficient spectral verification for wide-area image sky survey and reveal the physics behind astronomical events. Two kinds of recommended optical designs for SSST have been proposed [8,9], which are designed for the telescope body. But the works about the spectrograph, which is also an important scientific instrument for SSST, have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Optical design of a multi-object fiber-fed spectrograph system for Southern Spectroscopic Survey Telescope

Shan,

Zhu,

Tan

et al. 2021

Preprint

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Southern Spectroscopic Survey Telescope (SSST) is a wide-field spectroscopic survey telescope that China plans to build in Chile in the next few years. As an instrument for astronomical spectroscopic survey, the multi-object and fiber-fed spectrograph (MOFFS) is one of the most important scientific instruments for SSST. In this paper, we present a recommended optical design for the MOFFS system based on the Volume Phase Holographic Gratings (VPHG). The whole design philosophy and procedure, including the analytic method to determine the initial structure, optimization procedures of the VPHG and the camera groups, are demonstrated in detail. The numerical results of the final obtained spectrograph show a superior imaging quality and a relatively high transmittance for the whole working waveband and the field of view. The design method proposed in this paper can provide a reference for the design of MOFFS accommodated in spectroscopic survey telescopes.

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Optical design of a multi-object fiber-fed spectrograph system for Southern Spectroscopic Survey Telescope

Shan

Zhu

Tan

et al. 2021

Optics Communications

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Recommended optical system design for the SSST

Cited by 6 publications

References 25 publications

Conceptual Design of the Optical System of the 6.5m Wide Field MUltiplexed Survey Telescope with Excellent Image Quality

Conceptual Design of the Optical System of the 6.5m Wide Field MUltiplexed Survey Telescope with Excellent Image Quality

Optical design of a multi-object fiber-fed spectrograph system for Southern Spectroscopic Survey Telescope

Optical design of a multi-object fiber-fed spectrograph system for Southern Spectroscopic Survey Telescope

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