[Bodon (Steve)]

Alex
Regards those filters; did you install them or someone else? If someone installed them its highly likely that they are installed in the following order:
Starting at number1 L R G B Sii Ha Oiii. So, if someone installed them number 1 on your ASIAIR would be L.
Your wheel is numbered internally and the only way you see the numbers is to take the back off the wheel. As you have a 2600, this is screwed directly to the wheel, so do not remove the camera. To see your filters you have to unscrew the spacer in front of the wheel and remove camera and wheel complete. Then unscrew the back of the filter wheel. Screws are small... But if you have the large OAG it will also be screwed to the filter wheel and then that would have to be removed before getting to the wheel. All painful. I suggest not to if not confident. If so do it in a sterile area, and dont cough on your filters. You seem to know the position of Ha Sii and Oiii from your last post so I would use the sequence above and not remove anything.
And the torch wont work...
The idea of taking a clear picture of your opened filter wheel and posting it is that positions MAY be identified by the colour but I dont think its necessary.