"Holes in your stars" means that your scope is slightly out of focus if it is a reflector (not a refractor). If you cannot easily obtain focussed images, consider a parfocal ring on another eyepiece, a cable focusser to avoid vibration being transmitted to the scope or an electric focusser with fine control. If your images are always like this and if the three images were taken with different filters without refocussing, this suggests that your scope need collimating because the optics are fractionally out of line at different wavelengths. This can occur because of heat or an impact to the scope.

alan.jenney