以濾鏡觀測太陽的問題

Wales

只是想請教一個好小的問題，就係一般的紙皮/咭紙能否擋紅外線同紫外光？
我想用以上物料加density 5.0的Badder膜做我雙筒的鏡前濾鏡觀測太陽。
因為有部分口俓可能只由紙皮/咭紙擋住objective lens，無透過Badder膜，請問安全嗎？

tang

Very danger, don't do it.

CHYeung

Please use thick (say 1 - 2 mm) cardboard paper. Paper is opaque to UV, visible as well as IR if it is thick enough. I constructed my solar filter cells this way.

Wales

Clipboard-1.jpg  的四周是發泡膠，黑色是類似紙的物料，而中間是filter。

或者大家有沒有其他物料的介紹？鐵？

畢竟，人生只有一個機會（我用bino），安全更重要，70mm的口俓我用80mm濾紙好過。

CHYeung

For binos, I just cover the front lens with a slightly larger piece of Baader's film and stick it there with cellotape.

If you want to make a removable cell, you must make sure that it can fit tightly and will not drop off accidentally. I use extra sticky tape to secure the mounted film to the telescope tube.

The following is another way of mounting:

TONGKW

外國有售特別給 雙筒鏡用的太陽濾鏡。
http://www.telescope.com/control ... s/~product_id=A0041


[ 本帖最後由 TONGKW 於 2009-5-31 12:31 編輯 ]

Wales

#5第一張圖的設計不錯，值得參考
唐先生個種是橙色太陽，無估錯的話。想問問此類濾鏡在哪幾間廠有生產的呢？
好似係Oak ......？

TONGKW

但這些套上雙筒鏡用的太陽濾鏡從外國訂購好昂貴，自已可以用2mm厚黑色紙皮做成外殼然後貼上Density 5 Baader Solar Film。用時將這太陽濾鏡套在雙筒鏡前端再用膠紙貼住，以免太陽濾鏡會跌下或被風吹走，產生危險。

KST

#5 是 Orion Solar Filters For Binoculars，
同類型的玻璃太陽濾鏡比較有名的是 Thousand Oaks Optical
http://www.thousandoaksoptical.com/solar.html