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Old 05-03-2019, 04:13 PM
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ChrisV (Chris)
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Join Date: Aug 2015
Location: Sydney
Posts: 1,246
Before getting the duo filter I used a UHC filter a fair bit. The duo is a very different beast due to the much narrower bandpass as others have mentioned. I'm guessing but think I'd need subs at least 5x longer to get background levels equivalent to those with the UHC filter. Might do a comparison on a dud night.
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