I have been imaging with an Explore Scientific ED80 and a ZWO ASI294MC Pro. When I try and image certain targets, I get arcs of light that go through the image. The strange thing is, is that the arcs have only appeared when trying to image M101, M42, and M78. The arcs do not rotate with the camera and I have tried covering every part of the imaging train to see if light was leaking in. I switched out with my DSLR as well and the arcs are still there. Does anyone have any other suggestions or possible solutions?
This is from a 10 second test exposure