Get a telescope with as large an aperture as you can afford .
挑望远镜时,只要在预算之内,拣孔径最大的买。
But the principle of focusing rays through an aperture onto a two-dimensional surface remains the same .
但其原理通过孔径聚焦光线在一个二维表面是保持不变的。
The smos instrument is called miras short for microwave imaging radiometer with aperture synthesis and is actually bigger than the satellite platform .
smos上的唯一载荷被称为miras综合孔径微波成像辐射计的简称它实际比卫星平台更大。
In theory , when you double the aperture of a telescope , you increase its resolving power by a factor of two and boost its light gathering ability by a factor of four .
理论上,当你将望远镜的孔径放大一倍,它的分辨能力就会增加1倍,它的集光力就会增加为原来的4倍。
Manufacturers who advertise a 375 or 750 power telescope which is only 60mm in aperture ( maximum power is 142x ) , are misleading .
At this age they are better able to take advantage of shutter speed priority and aperture priority modes .
这个年纪的孩子可以更好地理解快门优先和光圈优先模式。
Aperture is the size of the opening that allows the light into the camera ( the lens ) .
光圈的大小决定了有多少光会进入相机(镜头)。
If the photos are looking too dim , vary the shutter speed while keeping the aperture the same .
如果照片看起来较暗的话,保持光圈不变,调整快门速度。
The second reason I recommend film to beginners is that it 's a more immersive way to learn about the relationship between aperture , iso and shutter speed .