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Just as an aside to that, Chroma has been around for a long long time (two decades from memory) and I’ve read a number comments that a number of years ago Chroma made the filters for Astrodon to their specifications, that may have been until about 5 years ago. I haven’t found it written officially but it’s been mentioned by a few on CN.
Chroma is only recently producing for themselves for astrophotographers. I believe this is why they seem to be new to the market but they’ve been in the industry for a few decades I believe.
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