Home made Moon filter (自制月亮滤镜)
原帖:http://www.astronomyforum.net/telescope-accessories-forum/93263-home-made-moon-filter.html
Was wondering if the 80A or ND filter I have in my camera kit is the one used for reducing the moon's brightness. A search in the net confirmed it to be 80A.
(考虑相机配套元件中的80A或者ND滤镜是否有消除月亮亮度的作用,经过在网上查找,确定80A可以用作月亮滤镜)
Remembered I have 80A in my camera kit. 55mm diameter. Now how to make use of the 80A I have?
(相机配套元件中80A滤镜口径55mm)
步骤:
The dust cap of the scope seemed to have a smaller cap(望远镜防尘盖上面有个小的盖子)
Gave a push from inside and it came out!(将上面的小盖子取下)
The filter could not be fitted as it was exactly of the same diameter.
Ha, I have a filter ring (for gelatin filter) and 80A can be threaded on to it.(滤镜和小盖的尺寸不同,但是可以嵌入到我的明胶滤色镜的过滤圈中)
Now only to fit the filter ring onto the dust cap. TACK-IT removable adhesive did the job.(将滤镜嵌入到明胶滤色镜过滤圈中后,将移动胶粘剂涂抹到过滤圈上,再粘到望远镜防尘盖上)
And Moon Filter is ready。(到此为止,月亮滤镜就OK了)
翻译的比较拙劣,大家将就看吧,欢迎指正
顺便弱弱的问一下80A和ND滤镜是什么? |
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