ES ed80 triplet reducer/flattener

[flick]

I have an ES ed80 triplet refractor paired with 533mc pro + oag. I'm getting egg shaped stars at the edges on the top half of my image.
Is this a symptom of no flattener?

I have been trying to work out what type of flattener I can use that won't cost me half the price I paid for the scope. Bintel said they have nothing for me and I was wondering if anybody else tried one with any success? I would actually prefer a reducer/flattener to widen my FOV to compensate for the small sesnor ony camera.

This one appears to be ok, but I'm not sure.
https://proastroz.com/products/founder-optics-0-8x-flattener-reducer?_pos=4&_sid=557ddfda3&_ss=r

Thank you

[AstroViking]

Hi,

The egg-shaped stars aren't caused by camera tilt, is it? (Note that I have no idea about dedicated astro cameras; being a DSLR+scope person.)

Cheers,
V

[flick]

No I don't believe so. Regardless of that, I still want to purchase a reducer/flattener to improve my POV.