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Tim,
I use an Orion Collimating eye piece ( Cheshire ) to align the secondary on my 6” , 8” and 12” newts
Does the job ok
A hint though , use it on your scope outdoors in good sunlight or if indoors point you’re scope to a bright light, you get a much clearer view and makes collimating easier
To fine tune Collimation I use an Orion LaserMate deluxe collimator
Cheers
Martin
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