Chasing one of the V4 SCT corrector/reducers from Starizona.
Link:
https://starizona.com/products/stari...coma-corrector
Even better if you also have the 35.3mm threaded spacer for 55mm backfocus.
Link:
https://starizona.com/products/sct-c...or-iii-adapter
Alternatively, I might also interested in the SCT LF Corrector with the 0.7X reduction.
Link:
https://starizona.com/products/stari...coma-corrector