Thanks Dave. I feel like I have plenty of options now but not sure what to do.
Apologies in advance for over analysis - options:
1) 455 sensor - 6200 or 600 or APX60 -means an end to dual rig, may vignette excessively at F2.8 with 2” mounted filters, wont be effective on my 250px. Increasingly this is looking like the least ideal option.
2) 571 sensor on the Epsilon - mono QHY268 - works with current EFW3, but also means dual rig (other scope ED80 + KAF8300) won’t have enough overlap to be effective at gathering lum in one scope and RGB in other.
3) 571 sensor on the epsilon and change the ED80 to an Esprit 80, and continue to use KAK8300 mono
4) 571 mono sensor on the epsilon and change the KAF8300 on the ED80 to a colour 571 sensor. I’m favouring this option currently. I have a JTD saddle coming tomorrow from FLO so alignment shouldn’t be an issue.
5) ??