n*d
2 楼
K*2
3 楼
这个要实地测试的
以前我就被蒙过,有人在youtube上发视频,用一两百刀新出的卡片机打月亮,我买回
来发现根本打不了,不知道他是在什么地形和大气环境下打的
以前我就被蒙过,有人在youtube上发视频,用一两百刀新出的卡片机打月亮,我买回
来发现根本打不了,不知道他是在什么地形和大气环境下打的
H*g
5 楼
裂害!
这两天刚好土星半夜会出现,大家可以试试自家的长镜头。
这两天刚好土星半夜会出现,大家可以试试自家的长镜头。
H*g
6 楼
1610年伽利略最先看到的,但是看不清。估计那时候的玻璃镜还不怎么样。
所以现在的镜头如果够长,应该也能至少看到土星不是圆的。
Galileo Galilei was the first to observe the rings of Saturn in 1610 using
his telescope, but was unable to identify them as such. He wrote to the Duke
of Tuscany that "The planet Saturn is not alone, but is composed of three,
which almost touch one another and never move nor change with respect to one
another. They are arranged in a line parallel to the zodiac, and the middle
one (Saturn itself) is about three times the size of the lateral ones."[4]
He also described the rings as Saturn's "ears". In 1612 the Earth passed
through the plane of the rings and they became invisible. Mystified, Galileo
remarked "I do not know what to say in a case so surprising, so unlooked
for and so novel."[3] He mused, "Has Saturn swallowed his children?" —
referring to the myth of the Titan Saturn devouring his offspring to
forestall the prophecy of them overthrowing him.[4] He was further confused
when the rings again became visible in 1613.[3]
所以现在的镜头如果够长,应该也能至少看到土星不是圆的。
Galileo Galilei was the first to observe the rings of Saturn in 1610 using
his telescope, but was unable to identify them as such. He wrote to the Duke
of Tuscany that "The planet Saturn is not alone, but is composed of three,
which almost touch one another and never move nor change with respect to one
another. They are arranged in a line parallel to the zodiac, and the middle
one (Saturn itself) is about three times the size of the lateral ones."[4]
He also described the rings as Saturn's "ears". In 1612 the Earth passed
through the plane of the rings and they became invisible. Mystified, Galileo
remarked "I do not know what to say in a case so surprising, so unlooked
for and so novel."[3] He mused, "Has Saturn swallowed his children?" —
referring to the myth of the Titan Saturn devouring his offspring to
forestall the prophecy of them overthrowing him.[4] He was further confused
when the rings again became visible in 1613.[3]
p*h
8 楼
2000mm是可以了
这个长焦段的素质可以啊
要是能单独出个24-2000的头就更好了
这个长焦段的素质可以啊
要是能单独出个24-2000的头就更好了
p*h
10 楼
蝗虫的神器300mmf1.4怎么删了...居然没抓住
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