Hi,
I am looking for a 50mm round unmounted OIII/SII filter with 3nm bandpass (Astrodon/CS/Chroma etc). Just trying my luck here, let me know if you have one for sale.
WTB: 50mm 3nm unmounted OIII/SII
WTB: 50mm 3nm unmounted OIII/SII
Just a casual stargazer