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2010年3月16日星期二

超大太陽黑子

超大太陽黑子

What is the sunspot number?
Sunspot number: 28
Updated 15 Mar 2010

BIG SUNSPOT: Sunspot 1054 is so big, you can see it without a telescope. All you really need is a bank of thick clouds. Yesterday in Lusby, Maryland, a dark cloud drifted across the sun and "there was the sunspot!" reports Neil Winston. "I grabbed my camera and snapped this picture."
大太陽黑子:太陽黑子 1054是這麼大,你可以沒有望遠鏡也看到它,您真正需要的是列成一排的厚雲。昨天在馬里蘭州的Lusby,一片烏雲飄過太陽和那裡就“有太陽黑子!”尼爾溫斯頓報告, “我拿起相機和快拍這張相片。”

Photo details: Canon Rebel XSi, 300mm telephoto lens, 1/4000s

Readers, beware. While it is possible to see sunspot 1054 with the naked eye, staring at the sun is dangerous even when dimmed by clouds. A sudden gap in the cumulous, a lance of intense sunlight, and--presto!--you're blinking in pain. Photographing low or cloudy suns with a digital camera can be safe as long as you do not look directly through the viewfinder; Winston's photo is a good example. Your best bet, however, is a safely-filtered solar telescope.
讀者當心,雖然可以用肉眼看到太陽黑子 1054年,即使當灰色的雲令它變暗,但凝望著太陽是危險的;一個在積雲的突然缺口,一度激烈陽光的長矛,和 -迅速地! - 你'會在痛苦中眨眼。只要你不直接透過取景器看,用數碼相機拍攝低位或多雲太陽可以安全。溫斯頓的照片是一個好例子,但是,你最好的選擇,是一個安全過濾的太陽望遠鏡。

http://www.spaceweather.com/

http://www.spaceweather.com/submissions/large_image_popup.php?image_name=Pete-Lawrence-2010-03-15_13-56-02_SF70ss-flat_1268674903.jpg

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