Need help identifying NB Filters

[mtodman (Matt)]

Hi all.

I recently acquired an SBIG STT8300M with an 8 position filter wheel + filters. Problem is that I wasn't provided with the filter positions in the filter wheel.
I've figured out the RGB filter positions but I'm struggling to identify the Ha, Oiii & Sii filter positions.

I've recently taken some images NB of IC2944 (running Chicken Nebula) which I've attached.
Just wondering if someone could take a look and give me their best guess as to which images corresponds with which NB filter? My guess is that Filter 1 is Ha but I'm not sure about the other 2.

Alternatively, if someone could provide me with images of their NB filter shots of IC2944, that would be muchly appreciated.

Thanks

Matt

[Atmos (Colin)]

I would say Ha, SII & OIII respectively.

[Startrek (Martin)]

I’ll second Atmos
Ha the strongest signal followed by Sii the weakest and Oiii midway

Cheers
Martin

[Geochron (Jon)]

I had a similar problem a while back and found an answer in a post on Cloudy Nights.

The upshot was that when looking through the filter in daylight, the SII will look red, the Ha will look a brighter red, and the OIII will look blue'.

This seemed to work for me

cheers, Jon

[mtodman (Matt)]

Thanks Gents.

I'll try setting the filters accordingly.
If all else fails, I'll follow Jon's suggestion.