I have a GSO coma corrector and a Bintel spacer kit if you're interested (
https://www.bintel.com.au/product/bi...acer-ring-set/). I just don't shoot with my Newt anymore (it's too much on my shoddy HEQ5-Pro) and don't care about the coma corrector for visual use. Feel free to make me an offer if you want. It certainly worked as advertised on my Nikon D5100. I can dig you up some pictures if you care. I don't tend to post pics much on here anymore cause I can't be bothered dealing with the tiny upload limit.
Cheers,
Cam