I have been looking at an Andover Corp 390nm 10nm narrow band filter.
The details maybe of interest to others here. http://www.andovercorp.com/Web_store/de ... 390FS10-25
I have been supplied with this attached transmittance graph. I have asked for another graph showing the complete curve on the page.
Cheers
Col
AndoverCorp390nmUVFilter46transmittance130408390FSBGscan.pdf
AndoverCorp390nmUVFilter46transmittance2130408390FSBGscan.pdf
UPDATED...Andover Corp 390nm 10nm narrow band filter.
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swisswalter
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Re: UPDATED...Andover Corp 390nm 10nm narrow band filter.
Hi Colin
very fine plots. They confirm what we have found
very fine plots. They confirm what we have found
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE 
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from 7 am - 7 pm http://www.nanosys.ch
from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa