欧美精品在线第一页,久久av影院,午夜视频在线播放一三,久久91精品久久久久久秒播,成人一区三区,久久综合狠狠综合久久狠狠色综合,成人av一区二区亚洲精,欧美a级在线观看

        Ancient Chinese city with full moon attracts amateur astronomers

        Source: Xinhua| 2018-09-25 18:26:23|Editor: mmm
        Video PlayerClose

        KUNMING, Sept. 25 (Xinhua) -- Tens of thousands of amateur astronomers gathered in Lijiang, an ancient city with an 800-year history and one of China's largest optical telescopes, to observe the night sky in southwest China's Yunnan Province on Mid-Autumn Festival Monday.

        To cater to the needs of different amateur astronomers, a group led by the city's science and technology association set up six astronomical telescopes at the center of Lijiang Gucheng, a popular tourist destination, with dozens of volunteers providing professional assistance.

        "People waited in lines to use the equipment for about five minutes each, one by one, and we assisted and explained how to use the telescope and take good pictures," said volunteer Fang Zhou, a senior astronomy expert.

        "Cameras, mobile phones and video recorders can all be used to capture the beauty of the moon," he said.

        Some amateur astronomers took their own equipment to the spot to have a better view of the full moon.

        "Compared with the naked eyes, astronomical telescopes can give us higher resolution, making details on the moon such as lunar mares and craters more clearly presented," said Zhao Yixiong, an expert with the association.

        The ancient city was built at the end of the Song Dynasty (960-1279). Listed as a UNESCO World Heritage Site in 1997, Lijiang is one of the most famous ancient cities in China, and it boasts one of China's largest optical telescope, 2.4 meters in diameter and 8 meters tall, which began operation in 2007.

        "With hardly any atmospheric turbulence, the astronomical viewing is excellent in Lijiang, which means the images seen here are less distorted. The city also has ideal weather conditions for sky watching as it has more than 200 clear days a year," Zhao said.

        Moon watching is a traditional celebration on Mid-Autumn Festival, which falls on the 15th day of the eighth month on the Chinese lunar calendar, a full moon night between late September and early October.

        "The increasing public thirst for knowledge about astronomy has made sky watching a popular activity in China," Zhao said.

        TOP STORIES
        EDITOR’S CHOICE
        MOST VIEWED
        EXPLORE XINHUANET
        010020070750000000000000011100001374920141
        主站蜘蛛池模板: 欧美日韩不卡视频| 精品日韩久久久| 91精品久久久久久| 久久精品一区二区三区电影| 99久久免费毛片基地| 久久综合狠狠狠色97| 午夜肉伦伦影院九七影网| 狠狠干一区| 久久人91精品久久久久久不卡| 亚洲欧美一卡二卡| 中文字幕国内精品| 国产日韩欧美亚洲综合| 久久久综合香蕉尹人综合网| 国内少妇自拍视频一区| 午夜影院啪啪| 狠狠色噜噜狠狠狠狠88| 欧美日韩卡一卡二| 亚洲一级中文字幕| 国产精品久久久久四虎| 中文字幕欧美日韩一区| 好吊妞国产欧美日韩软件大全| 欧美精品在线视频观看 | 国产欧美视频一区二区三区| 99国产超薄丝袜足j在线观看| 亚洲精品日日夜夜| 日韩精品一区二区亚洲| 久久国产精品欧美| 国产伦精品一区二区三区免费观看| 少妇特黄v一区二区三区图片| 中文字幕av一区二区三区四区| 国语精品一区| 国产精品一区二区日韩新区| 中文字幕av一区二区三区四区| 996久久国产精品线观看| 午夜叫声理论片人人影院| 国产清纯白嫩初高生在线播放性色| av午夜剧场| 久久99精品久久久野外直播内容| 久久国产精品久久| 国产精品免费自拍| 十八无遮挡| 欧美极品少妇videossex| 国产清纯白嫩初高生在线播放性色 | 国产一区二区资源| 免费看性生活片| 国产盗摄91精品一区二区三区| 日本高清一二三区| 久久国产精品精品国产| 亚洲免费永久精品国产 | 91片在线观看| 欧美激情在线免费| 久久99精品国产麻豆婷婷| 欧洲在线一区| 精品一区二区在线视频| 国产免费区| 国产日韩一二三区| 日日夜夜精品免费看| 久久中文一区| 日韩中文字幕亚洲欧美| 亚洲码在线| 国产毛片精品一区二区| 国产一区免费在线观看| 96国产精品视频| 免费a级毛片18以上观看精品| 国产精品麻豆99久久久久久| 久久噜噜少妇网站| 久久er精品视频| 欧美在线观看视频一区二区| 国产精品6699| 国产精品96久久久久久久| 久久99国产精品久久99| 久久五月精品| 国产88久久久国产精品免费二区| 欧美二区在线视频| 91精品啪在线观看国产| www亚洲精品| 久久久久国产精品一区二区三区| 麻豆精品国产入口| 91九色精品| 日本午夜精品一区二区三区| 91精品久久久久久| 国产国产精品久久久久| 日本边做饭边被躁bd在线看| 欧美日韩一区免费| 国产精品中文字幕一区二区三区| 性视频一区二区三区| 91精品美女| 亚洲精品国产91| 国产精品欧美一区二区三区奶水| 特级免费黄色片| 99久久精品国产国产毛片小说| 国产精品欧美一区二区三区| 国产精品亚洲二区| 国产伦精品一区二| 综合色婷婷一区二区亚洲欧美国产| 亚洲美女在线一区| 国产精品女同一区二区免费站| 国产视频二区在线观看| www亚洲精品| 国产中文字幕一区二区三区| 综合久久一区| 国产午夜三级一二三区| 高清欧美xxxx| 国产精品美女一区二区视频| 国产1区在线观看| 少妇厨房与子伦在线观看| 国产精品女人精品久久久天天| 91免费看国产| 日本看片一区二区三区高清| 国产88av| 亚洲少妇中文字幕| 91精品国产影片一区二区三区| 日本一码二码三码视频| 国产精品高潮呻吟视频| 午夜电影一区| 欧美日韩国产精品一区二区| 精品国精品国产自在久不卡| 日本一区二区三区免费视频| 中文字幕制服狠久久日韩二区| 国产男女乱淫真高清视频免费| 私人影院av| 99久久精品免费视频| 视频一区欧美| 色天天综合久久久久综合片| 亚洲乱小说| 国产欧美一区二区三区不卡高清| 国产乱一区二区三区视频| 久久精品国产一区二区三区| 日韩精品免费一区二区中文字幕 | 亚洲精品日韩激情欧美| 亚洲天堂国产精品| 国产一级精品在线观看| 久久一级精品| 欧美乱妇高清无乱码免费| 欧美一区二区综合| 99国产精品免费| 97国产婷婷综合在线视频,| 麻豆国产一区二区三区| 国产乱人伦精品一区二区三区| 日韩a一级欧美一级在线播放| 香蕉视频在线观看一区二区| 野花社区不卡一卡二| 一区二区三区欧美视频| 日韩国产精品一区二区| 久久九九国产精品| 亚洲精品一区中文字幕| 99精品国产一区二区三区麻豆| 欧美日韩国产区| 亚洲欧洲日韩| 久久久精品99久久精品36亚 | 久久婷婷国产香蕉| 国产精品一区不卡| 少妇高潮ⅴideosex| 99日韩精品视频| 色噜噜狠狠色综合中文字幕| 激情久久影院| 日本精品一区二区三区视频| 国产日韩欧美精品一区二区| 日本精品一区在线| www.日本一区| 国产欧美亚洲精品| 国产91视频一区| 亚洲国产日韩综合久久精品| 午夜诱惑影院| 免费超级乱淫视频播放| 欧美一区二区色| 狠狠色狠狠色综合系列| 天堂av色婷婷一区二区三区| 中文字幕一区二区三区免费视频| 一色桃子av大全在线播放| 精品国产一区二区三| 国产精品亚洲第一区| 国产一区二区电影| 日韩亚洲欧美一区二区 | 国产午夜精品理论片| 亚洲精品456在线播放| 狠狠色丁香久久婷婷综合丁香| 午夜大片网| 午夜码电影| 欧美xxxxhdvideos| 久久天天躁夜夜躁狠狠躁2022| 国产伦精品一区二| 精品国产一区二区三区忘忧草| 日韩一级在线视频| 免费xxxx18美国| 狠狠色噜噜狠狠狠狠777| 中文乱码字幕永久永久电影| 欧美日韩一区二区三区免费| 国语对白一区二区| 99久久99精品| 国产精品欧美日韩在线| 精品久久二区| 国产精品欧美久久久久一区二区| 4399午夜理伦免费播放大全| 国产精品一二三区视频出来一| 一级午夜电影| 午夜天堂电影| 国产午夜亚洲精品羞羞网站| 91精品www| 亚洲乱码一区二区三区三上悠亚 | 欧美网站一区二区三区| 久久人人精品| 亚洲精品乱码久久久久久国产主播| 夜夜嗨av禁果av粉嫩av懂色av| 精品99在线视频| 午夜电影一区二区三区| 国产日韩欧美中文字幕| 久久久久国产亚洲| 最新国产精品自拍| 中文字幕一级二级三级| 国产欧美日韩中文字幕| 国产精品一级在线| 国产videosfree性另类| 亚洲无人区码一码二码三码| 色一情一乱一乱一区99av白浆| ass韩国白嫩pics| 亚洲欧洲一区| 99国产精品丝袜久久久久久| 午夜毛片在线观看| 国产一区二区大片| 国产一区在线精品| 日本久久不卡| 国内偷拍一区| 久久久久亚洲国产精品| 91免费视频国产| 日韩久久精品一区二区| 狠狠色噜噜狠狠狠四色米奇| 国产一级自拍| 最新国产精品久久精品| 国产精品一区二区久久乐夜夜嗨 | 国产在线拍偷自揄拍视频| 欧美视频1区| 午夜精品一二三区| 国产麻豆一区二区三区在线观看| 国产91在线拍偷自揄拍| 日韩一区二区精品| 日本高清二区| 欧美日韩国产区| av不卡一区二区三区| 99精品偷拍视频一区二区三区| 亚洲精品久久久久中文第一暮| 国产精品二区一区| 欧美日韩国产一二三| 亚洲精品丝袜| 狠狠色丁香久久婷婷综合丁香| 欧美精品免费看|