Multi-instrument characterization of optical turbulence at the Ali observatory

Liu, L. Y.; Yao, Yongqiang; Vernin, J.; Wang, H. S.; Yin, Jiabo; Qian, Xuan

doi:10.1088/1742-6596/595/1/012019

Cited by 9 publications

(10 citation statements)

References 7 publications

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“…The computed values for Ali Observatory at Shiquanhe are appended to Table 1. Long-term measurements are currently unavailable, but the computed values grossly agree with the numbers derived from measurements taken in 2012-2014 (Liu et al 2015;Wang et al 2015;Yao et al 2015). In general, the astroclimatology of Shiquanhe Observatory is in par with other sites listed in Table 1.…”

Section: Discussionsupporting

confidence: 65%

“…Comparison between the long-term medians derived from the CFSR data and in-situ measurements for Cerro Chajnantor (Giovanelli et al 001a,b;Yoshii et al 2010), Cerro Tolonchar (Schöck et al 2009), Hanle (Cowsik et al 2002) and Mauna Kea (Morrison et al 1973;Bely 1987). The medians derived from recent measurements in 2012-2014 (as asterisked; see Liu et al 2015;Wang et al 2015;Yao et al 2015), along with the calculated CFSR values for Shiquanhe Observatory, are given at the end of the table.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Tibet's Ali: Asia's Atacama?

et al. 2015

Monthly Notices of the Royal Astronomical Society: Letters

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The Ngari (Ali) prefecture of Tibet, one of the highest areas in the world, has recently emerged as a promising site for future astronomical observation. Here we use 31 years of reanalysis data from the Climate Forecast System Reanalysis (CFSR) to examine the astroclimatology of Ngari, using the recently-erected Ali Observatory at Shiquanhe (5 047 m above mean sea level) as the representative site. We find the percentage of photometric night, median atmospheric seeing and median precipitable water vapor (PWV) of the Shiquanhe site to be 57%, 0.8 ′′ and 2.5 mm, comparable some of the world's best astronomical observatories. Additional calculation supports the Shiquanhe region as one of the better sites for astronomical observations over the Tibetan Plateau. Based on the studies taken at comparable environment at Atacama, extraordinary observing condition may be possible at the few vehicle-accessible 6 000 m heights in the Shiquanhe region. Such possibility should be thoroughly investigated in future.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Tibet's Ali: Asia's Atacama?

et al. 2015

Monthly Notices of the Royal Astronomical Society: Letters

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“…Figure 2 shows their local topographical maps and photos. Both Ali and Daocheng sites have already been constructed and being monitored (Yao et al 2014a;Yin et al 2014;Liu et al 2015;Wang et al 2015;Yao et al 2012;Liu et al 2012;Yao et al 2013;Wu et al 2016;Liu et al 2016) for a relatively long time. Preparation works for the Muztagh Ata site only began after the initiation of LOT project in late 2016.…”

Section: The Candidate Sites Testing Instruments and Setupmentioning

confidence: 99%

“…Early efforts have been made by the community and have been reported in papers such as (Liu et al 2012;Yao et al 2013;Yao et al 2014b;Liu et al 2015;Wang et al 2015;Qian et al 2015;Wu et al 2016;Liu et al 2016). However, due to differences in data definitions, data acquisition instruments, and data processing methods, etc., results from these various site testing programs are not directly comparable and cannot help in reaching a consensus conclusion.…”

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confidence: 99%

Site testing campaign for the Large Optical/infrared Telescope of China: Overview

Feng,

Hao,

Cao

et al. 2020

Preprint

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The Large Optical/infrared Telescope (LOT) is a ground-based 12m diameter optical/infrared telescope which is proposed to be built in the western part of China in the next decade. Based on satellite remote sensing data, along with geographical, logistical and political considerations, three candidate sites were chosen for ground-based astronomical performance monitoring. These sites include: Ali in Tibet, Daocheng in Sichuan, and Muztagh Ata in Xinjiang. Up until now, all three sites have continuously collected data for two years. In this paper, we will introduce this site testing campaign, and present its monitoring results obtained during the period between March 2017 and March 2019.

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“…The Tibet Ali site is considered to be one of the best sites in east Asia (Liu et al 2015a;Ye et al 2016) and has been selected as one of the potential sites for the LOT. The site-testing data are obtained with the method discussed in Liu et al (2010), Liu et al (2013) and Liu et al (2015b). Because this method does not allow ground-layer turbulence measurement, we will set the GLAO system telescope to 100 m lower than the lowest layer of measured turbulence-profile data, and randomly select two nights of site-testing data with different seeing conditions to show the performance variation in these conditions.…”

Section: A S E R G U I D E S Ta R S Y S T E M S T U Dymentioning

confidence: 99%

OUP accepted manuscript

Jia

Basden

Osborn

2018

MNRAS

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Multi-instrument characterization of optical turbulence at the Ali observatory

Cited by 9 publications

References 7 publications

Tibet's Ali: Asia's Atacama?

Tibet's Ali: Asia's Atacama?

Site testing campaign for the Large Optical/infrared Telescope of China: Overview

OUP accepted manuscript

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