[Emuhead (Andrew)]

Hi all,

I have these really odd looking triangular star shapes that I once thought were pinched optics, which after freeing up the mirror to the point its almost floating around in its cell, i can confirm if it is pinched optics, it not the mirror clips. I also dont think its collimation as im doing the same thing i usually do. Im starting to suspect it might be the reducer im using. Ill be testing that theory tonight, but in the mean time.. what do you think the image attached looks like? In the lower left you can see each star splitting into 3.

Gear:
Skywatcher Quattro 10"
Starizona Nexus 0.75x Reducer
ASI2600MM
EQ6R Pro

Also, the vignetting cant be from the filters as they are 50mm Antlia's with an OAG-L, so im guessing thats either unavoidable light falloff or maybe the light cone being restricted by the 2" focuser. Any ideas there also appreciated. Id like to eliminate that if altogether if possible.

Im starting to get why most people just get fracs.. in my own experience they are just so much easier to get good results out of.