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Features an internal Etalon with tune adjustment for sub-0
It also allows more stars to appear in the field of view compared to narrower bandwidth filters
75 at the telescope interface and a male thread M48x0
The original was even larger
Flight-Case ED102 ALU Tube – Professional Protection for Telescopes Poseidon-C Pro Features an internal Etalon withFlight Case ED102 ALU Tube Professional Protection for Telescopes The Flight Case ED102 ALU Tube is the ultimate solution for safeguarding your Explore Scientific ED102 refractor or similarly sized optical equipment. Crafted with a professional grade, super robust design, this case offers unmatched protection for your valuable telescope. Whether youre transporting your equipment to remote observation sites or storing it at home, the ED102 Flight Case
