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Old 01-03-2021, 07:03 PM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,976
Quote:
Originally Posted by Merlin66 View Post
If you don’t trust the published transmission curves from the commercial suppliers I can measure any/ all filters to determine the actual transmissions.
I can also measure a “sky” brightness to determine if there are any identifiable emission lines involved.
Let me know if I can assist.
That's very generous of you Ken. It would be great to have something as quantitative as that to rely on and perhaps allow us to compare with manufacturer transmission curves.

Best
JA
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