求解CCD圖像幾何扭曲的初步結(jié)果
發(fā)布時(shí)間:2018-10-14 12:50
【摘要】:準(zhǔn)確求解望遠(yuǎn)鏡成像系統(tǒng)中視場(chǎng)的幾何扭曲是高精度天體測(cè)量中的關(guān)鍵環(huán)節(jié).借鑒哈勃空間望遠(yuǎn)鏡幾何扭曲求解的思想,提出并實(shí)施了一種簡(jiǎn)便、有效的方法.應(yīng)用到云南天文臺(tái)1米望遠(yuǎn)鏡2011年4月2~3日觀測(cè)疏散星團(tuán)M67所得的72幅CCD圖像表明:望遠(yuǎn)鏡存在明顯的幾何扭曲效應(yīng),在視場(chǎng)角落最大扭曲~0.6pixel(~120mas).經(jīng)扭曲改正后,視場(chǎng)中星象的定位精度有了明顯提高.
[Abstract]:Accurately solving the geometric distortion of the field of view in the telescope imaging system is a key link in high precision astrometry. A simple and effective method for solving geometric distortion of Hubble Space Telescope is proposed and implemented. The 72 CCD images obtained from the 1-meter telescope of Yunnan Observatory from April 2 to 3, 2011 show that the telescope has obvious geometric distortion effect and the largest distortion ~ 0.6pixel (~ 120mas) in the corner of the field of view. After the distortion correction, the positioning accuracy of the stars in the field of view has been improved obviously.
【作者單位】: 暨南大學(xué)計(jì)算機(jī)科學(xué)系;暨南大學(xué)天體測(cè)量、動(dòng)力學(xué)與空間科學(xué)中法聯(lián)合實(shí)驗(yàn)室;光電信息與傳感技術(shù)廣東普通高校重點(diǎn)實(shí)驗(yàn)室(暨南大學(xué));
【基金】:國(guó)家自然科學(xué)基金(批準(zhǔn)號(hào):10973007) 暨南大學(xué)中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目
【分類號(hào)】:P12
本文編號(hào):2270504
[Abstract]:Accurately solving the geometric distortion of the field of view in the telescope imaging system is a key link in high precision astrometry. A simple and effective method for solving geometric distortion of Hubble Space Telescope is proposed and implemented. The 72 CCD images obtained from the 1-meter telescope of Yunnan Observatory from April 2 to 3, 2011 show that the telescope has obvious geometric distortion effect and the largest distortion ~ 0.6pixel (~ 120mas) in the corner of the field of view. After the distortion correction, the positioning accuracy of the stars in the field of view has been improved obviously.
【作者單位】: 暨南大學(xué)計(jì)算機(jī)科學(xué)系;暨南大學(xué)天體測(cè)量、動(dòng)力學(xué)與空間科學(xué)中法聯(lián)合實(shí)驗(yàn)室;光電信息與傳感技術(shù)廣東普通高校重點(diǎn)實(shí)驗(yàn)室(暨南大學(xué));
【基金】:國(guó)家自然科學(xué)基金(批準(zhǔn)號(hào):10973007) 暨南大學(xué)中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目
【分類號(hào)】:P12
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