有無人有衍射光柵 (300-600l/mm) ?

Wah!! · 文章由 **Wah!!** » 週六 11 7月, 2009 22:20

有無人有衍射光柵 (500-600線/mm) ?
只需要好細塊: 20mm x 20mm
謝謝!

tatkongau · 文章由 **tatkongau** » 週六 11 7月, 2009 23:58

在日食用嗎??

Wah!! · 文章由 **Wah!!** » 週日 12 7月, 2009 00:20

係呀

Wah!! · 文章由 **Wah!!** » 週日 12 7月, 2009 12:14

平時好少push, 今日都要push下喇.

CHYeung · 文章由 **CHYeung** » 週日 12 7月, 2009 23:37

Dear Wah,

I have some very low-quality 25,400 l/inch (1,000 l/mm) plastic replica holographic grating. If you think that it is usable, please contact me.

CH Yeung

Wah!! · 文章由 **Wah!!** » 週一 13 7月, 2009 15:07

Dear CHYeung,

Thank you for your kindly help.
I have got a 1000l/mm grating from Occultation (Also thanks for his kindly help!)
But after setup the equipment with several trials, I've found that the line/mm density is too high for me to use, and need a 500l/mm grating instead...

Wah!! · 文章由 **Wah!!** » 週二 14 7月, 2009 10:15

請問有無人有 300-600線/mm 的薄透明膠光柵呢?

香港天文論壇

有無人有衍射光柵 (300-600l/mm) ?

有無人有衍射光柵 (300-600l/mm) ?

誰在線上