Quote:
Originally Posted by Merlin66
The Astrondon data I have shows about 60% transmission for the U filter..
Yes the bandwidth sits across the Balmer jump....compared with the Ha intensities the H10 series is much reduced.
Interesting that you achieved such success - well done!
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Astrodon did at one stage sell a Schuler UV filter which gave a 65% transmission in UV.
The current generation has a 95% transmission.
Regards
Steven