I was pointing at M8 with filters on the week-end and had no trouble guiding. 1st one is QHY8 on the vixen @ F9, 2nd one is starlight on the tak at F6. I used a 2" 7nm Baader Ha on the imaging camera and guided with a qhy5 on the other scope. No cal files, just playing around and trying to colliminate the vixen so ignore the triangular stars in the first one