Thread: 8th filter for ZWO 8 filter wheel
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Old 27-06-2021, 11:34 PM
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billdan (Bill)
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I think Colin (Atmos) has a Nitrogen NII filter centred on 658.4nm.

However to take advantage of it you would need to replace your 7nm Ha filter (as it already picks up NII as well as Ha) with a 3nm filter.
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