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Old 28-05-2008, 08:06 PM
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tornado33 is offline
Join Date: Jan 2005
Location: Newcastle, NSW, Australia
Posts: 3,935
The Idas LPS blocks IR fairly well, I find a separate uv/ir finter is not needed. With my Baader UHC-S filter however a filter IS needed as IR gets through. The LPS filter will come with a graph of its passbands and theres virtually nothing in the IR
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