马头星云
巨图下载：[url=http://www.eso.org/gallery/d/2297-4/phot-02a-02.tif]http://www.eso.org/gallery/d/2297-4/phot-02a-02.tif[/url] 72.4MB[img=1244,1280]http://www.eso.org/gallery/d/4232-2/phot-02a-02.jpg[/img]
A reproduction of a composite colour image of the Horsehead Nebula and its immediate surroundings. It is based on three exposures in the visual part of the spectrum with the FORS2 multi-mode instrument at the 8.2-m KUEYEN telescope at Paranal. It was produced from three images, obtained on February 1, 2000, with the FORS2 multi-mode instrument at the 8.2-m KUEYEN Unit Telescope and extracted from the VLT Science Archive Facility . The frames were obtained in the B-band (600 sec exposure; wavelength 429 nm; FWHM 88 nm; here rendered as blue), V-band (300 sec; 554 nm; 112 nm; green) and R-band (120 sec; 655 nm; 165 nm; red) The original pixel size is 0.2 arcsec. The photo shows the full field recorded in all three colours, approximately 6.5 x 6.7 arcmin 2 . The seeing was about 0.75 arcsec. 漂亮啊::070821_21.jpg:: 巨图下载，乖乖！ 这个巨图我下了，觉得没什么意思 8米望远镜,呵呵,太牛了!我有十分之一就够了
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