Star artefacts LRGB

[bri]

Hi all,

After stacking an image of the iris, I noticed this flaring on some of the larger stars. I have a feeling that I have the lum filter in the wrong way round causing some weird reflection. Its only showing in the lum channel. Is this the case or is it something else?

They are 36mm unmounted and I remember that the L was difficult to tell which way round it was supposed to go using the pen method

I thought I would ask on here before I open up the filter wheel so I can carry on with tonights session

Ta very much