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Paul,
The guiding numbers on your new EQ8-R are excellent, both my EQ6-R’s in Sydney and South Coast on an average night of seeing guide around 1 arc sec , down south on a good night 0.80 to 0.90 and under excellent seeing 0.75 to 0.85 and that’s with 15kg on board , 1000mm FL , a guide scope and no PEC
If your getting 0.6 arc sec and below out of the box on an average night of seeing then that is excellent , maybe on an excellent night you will get down to 0.4 to 0.2 arc sec which is ridiculously good. I too wouldn’t worry about PEC
I’m still getting round stars at 1 arc sec error pushing +5 minute subs for hours and hours at my focal length
2 weeks ago I imaged the keyhole with a 2 x Powermate which gave me a 2000mm FL and 15 kg on board pushing 5 minute subs for hours and stars were pinpoint. That EQ6-R out of the box is a proven performer as I’m pushing its limits with 15kg on board
Your EQ8-R is definitely in a class of its own
Cheers
Martin
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