[AdamJL]

Hi all

Looking for some advice as to my next "upgrade".
I currently use:
Mount: EQ6-R Pro
Scope: Skywatcher ED80 (no field flattener)
Camera: Canon 5D IV not modified
Alignment: PoleMaster
Software: NINA, SynScanPro for alignment (using NINA's inbuilt crosshair)

The issues I'm finding are
- the edge quality of the scope. It's only really useable in the centre
- the inability to shoot emission nebula in more detail with the 5D
- I can get 3+ minutes tracking when facing south, but when I turn east, I seem to only be able to hit 1 minute before trails appear, so a guide-system is necessary in future.

Just after some opinions here. What would you upgrade?
My gut feeling is to go after a new camera. Whether that's a dedicated astro-cam or an EOS Ra (not modding any of my normal cameras) is something I'll decide later, but I feel that if guiding accuracy and edge quality becomes irrelevant if the camera can't actually capture what I want it to capture.
So my thoughts are camera first (which will also crop into the centre of the imaging circle, minimising edge quality issues on the scope), then a field flattener after that.

What do you all think?
Cheers
Adam