[EzyStyles (Eric)]

I'm currently imaging right now and noticed black donuts appear in my images? . I think these came out after I removed the IR Filter off the DSI .

Anyone know what these are? (see attached. 2 donuts on left and right)
At first i thought collimation, centre spot?, star out of focus? but it isn't as i have also tried on other objects. these black donuts appears same location.

thanks