There is a lot to play with to improve plate solving success.

First. make sure the field-of-view, focal length, etc look right on the align page.
Next, look in the Options menu on the lower right of the Align page.
Often unchecking Use Position and Use Scale in the "Scale and Position" sub-tab help, if the issue is that scale and/or position are set up wrong.
If the issue is star detection, then changing the preset at the top of Align Options Profile Editor can help, and/or editing some of the preset values.

If you post a fits file captured the same way you're capturing for align (e.g. same exposure, binning, gain/iso, filter, ...) then I can try and see what options work for me and pass them back to you.

Hy

Read More...