Quote:
Originally Posted by Endrexil
Hi all,
I currently only got a Halpha filter in 12nm and like to complete the set with OIII and SII filters.
They need to be 1.25" but they don't necessarily have to be 12nm.
Preference for 12nm but also fine if I can pick up a different wavelength at a good price.
Also not too fussed about the brand. My Ha is Astronomik so again preference would be that but happy to take other brands.
Also happy to buy them individually. OIII is priority followed by SII.
Many Thanks,
Mathias
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Hi Mathias
These
OIII filters from NightSkySecrets may interest you.
I have attached a bandpass graph FYI
I hope this helps !