M82 and star alignment

[Jules]

Hi

I have been collecting a lot of Ha in the above galaxy. I am having trouble with star alignment in its default settings. About a third of my images fail the alignment process, I think the problem is a sparsity of stars?

I have tried variations in the star alignment set up but to no avail, is dynamic alignment my only option?

Thanks

Julian

[sreilly]

Can you post one of the images? Which version of PI are you using?

-Steve