My ASI2600 has been a joy. Previously shot with the ASI533MM Pro, which has a much smaller sensor. Glad your 2600 got fixed.

(4/4) Even shooting at 260mm FL, guiding (using PHD2) has been consistently in the 0.5" - 0.6" range, sometimes as low as under 0.4". This is the first year that I haven't had to debug my travel rig.

FWIW, my software stack for image capture is N.I.N.A., PHD2, and Green Swamp Server.

(3/4) Pegasus FocusCube 3 Universal
Pegasus Pocket Powerbox Advanced
Sky-Watcher Wave 150i strain wave mount
iOptron LiteRoc tripod (originally shipped with the GEM45 mount)
iOptron Mini Pier (mates the mount and the tripod)

This stack has given great results over my first three nights of imaging.

(2/4) Sky-Watcher Esprit 80ED f/5 apo refractor (with flattener)
Starizona Apex ED-S 0.65x reducer/corrector
ZWO ASI2600MM Pro camera
ZWO ASI2900MM mini guide camera
ZWO off-axis guider
ZWO 7-positon 36mm filter wheel

#astrophotography

You just described my entire career. Funny thing, when you become "good enough" you appear elite to those who aren't.

@debf56.bsky.social thanks! Very kind of you to say.

Same experience with my 6" RC. Using an OAG with even a smaller sensor (533) has been challenging. Might try a separate guide scope.

I'm encouraged by my first night with the Wave 150i. Guiding was at least acceptable and I think can be improved with a little more tweaking. Got decent data.