Nice detail in the glob. It looks like the camera is tilting in the focuser. Is the camera in an eyepiece holder? It may be leaning slightly and something to watch when you out the camera in that it is fixed square and very tightly. Screw on tube adapters are good this way as they don't allow the camera to sag. Some eyepiece holders are a little bit oversized and thus can allow some rocking.
Greg.
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