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Bi wavelength filter!
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09-11-2018, 04:42 PM
Merlin66
(Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
Bi wavelength filter!
https://www.cyclopsoptics.com/astron...d-filter-48mm/
Appears to give good filtering and suppression of background lighting.
Would need an OSC camera to separate and process the OIII and Ha images.
Merlin66
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