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Antlia SII 3nm Pro narrowband filter optimizes the FWHM (full-width half maximum) to 3nm bandpass. As the bandwidth becomes narrower, the 3nm Pro n...
View full detailsThe Antlia 3nm Pro Ultra Narrowband 1.25" filter set includes the following items: Antlia 2" H-Alpha 3nm filter Antlia 2" OIII 3nm filter Antlia 2...
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