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Jeff,
Here’s my APT procedure I put together last year when I received my 2600MC
It may help you
Just remember I use Newts and use my diffraction spikes to achieve good focus which works a treat. I suppose if your using a refractor you can still use my method but not as accurate ( I don’t use a software based focuser , I use a JMI autofocuser with a handcontroller and view each 20 sec sub in APT until I’m satisfied
I’m very rarely out of focus
Hope it helps in some way
Cheers
Martin
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