1.25" OIII and/or SII narrwband filters

[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

[gaa_ian]

Hi Mathias
These OIII filters (http://www.nightskysecrets.com.au/accessories/o-iii-filter-1-25-kson.html) from NightSkySecrets may interest you.
I have attached a bandpass graph FYI
I hope this helps !

[Endrexil]

Thanks Ian!
They look very very affordable,to not say cheap.
How do hey compare to say better known brands such as astronomik? Any reviews you can point me at?
Do you also sell SII filters?

[gaa_ian]

I have had Astronomic myself and I would say that they compare very well in both performance and build quality to the Astronomic filters. Like all OIII filter they are best on larger apertures, unlike the UHC filter I have which work well right down to a 3" scope.

[Endrexil]

I thought I'd bump this to see if anybody has a 5 or 6nm Oiii filter for sale?
I'd be interested in a branded product like astronomik and obviously in great condition.

Many thanks,
Mathias