| 1. | If not , either the secondary holder or the focuser ( or both ) needs attention
如果不是这样，要么副镜支架或调焦座（或两者）需要注意了。 |
| 2. | Put it in the focuser and observe the reflection of its shiny 45 - angle face in the primary
把它放到调焦座上，观察它的45度角的反射面。 |
| 3. | Finally , inside this reflection of the secondary , you can see the focuser drawtube and your eye
最后，在副镜的反射像中，你能看到调焦座的伸缩管和你的眼睛的像。 |
| 4. | Step 2 : here you adjust the tilt of the secondary mirror to aim the focuser ' s axis at the center of the primary
现在你已经调整了副镜的倾斜程度，把调焦座的中轴已经对准了主镜。 |
| 5. | This rotator device is still used today for all takahashi focuser from the 2 ” to 4 ” focusers and all astrographs
该旋转接口至今仍应用于高桥的2 ”到4 ”的调焦座以及天文摄影中。 |
| 6. | The focuser has large anodized focuser knobs with rubber o - ring gripping surfaces for a firm grip and frostbite - free handling in cold weather
那转接端已经用强氧化处理的表面镀膜为寒冷的天气坚定的紧握和级低温的稳定使用。 |
| 7. | With your eye close to the focuser , you can see the primary mirror reflected in the secondary , and the secondary and its spider in turn reflected in the primary
把眼睛靠近调焦座，你会看见副镜中有主镜的反射像，而副镜和它的支架也在主镜中有反射像。 |
| 8. | Like the primary mirror , the eyepiece has an optical axis , and this axis should be aimed at the center of the main mirror for best performance ? though in practice it is the center axis of the focuser drawtube that you aim at the primary mirror
目镜和主镜一样也有光轴，光轴应该对准主镜的中心? ?尽管实际上，目镜的光轴对准的是调焦筒（相当于调焦座）的中心。 |
| 9. | Perhaps for such reasons , the term " prime focus " is increasingly being used in a more general manner : in systems in which there is only one place where there is a focuser - - where an image is formed and you can get at it with an eyepiece or some other equipment - - that location is called the " prime focus "
可能出于这些原因， “主焦点”一词正逐渐被人们以一种更宽泛的方式使用：在只有一个聚焦装置的光学系统中，那个成像的、可以用目镜或其他装置摄取像的位置，就叫做“主焦点” 。 |
