Thanks Marc and Peter.
I have been looking at the dedicated orion field flattener for the Eon.
https://www.amazon.com.au/Orion-0867.../dp/B015ZYEYAW
I have in fact ordered one from Amazon, however it is currently unavailable and seems like orion have stopped manufacturing them.
bintel have them unavailable as do all the places i can find in the USA
there are 2 others that in theory could be suitable, i think i'll put a separate question up on here to see if anyone has opinions on them specifically with my scope.
thanks for your suggestion
Jack