有关望远镜的问题A telescope of 1000mm focal length is provided with

有关望远镜的问题
A telescope of 1000mm focal length is provided with 32 and 11 mm Plossl eyepieces along with a X2 Barlow lens .What four magnifications are available
The 32 and 11mm eyepieces have field stop diameters of 27mm and 9mm,respectively.What fields of view would be observed with these two eyepieces?
试着翻译一下:望远镜的焦距为1000mm,目镜的焦距为32mm,光路中再放一两倍放大率的BARLOW透镜,试计算该望远镜的放大率?
如果该目镜的Field stop为27mm,该望远镜的视场为多大?
tsing79 1年前 已收到1个回答 举报

wsm7758258 幼苗

共回答了20个问题采纳率:85% 举报

放大倍数等于物镜焦距除以目镜焦距再乘以巴罗倍数,等于62.5倍.
field stop指的是视场光阑,它是目镜中一个结构,中间有一个圆孔,你在视场里看到的那个外围的圈就是这个东西.
对32mm目镜,27mm视场光阑对应目镜视场是50度,实际视场等于目镜视场除以放大倍数,所以实际视场是0.8度.

1年前

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