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Depends on what you want to capture, the bintel newt is 800mm and the GSO 8" is 1650mm focal length.
With the RC 8 you could use a flattener/reducer to get a shorter focal length so it is a bit more versatile.
I use a short refractor flattener on my RC 6 and it is working amazingly well for the cheapest flattener Bintel sells.
I also use a Pflat3 that is a 0.85 reducer/flattener and that works good too.
I am waiting for a 2" 2X reducer to see if i get a good field with pinpoint stars at almost 800mm with the RC8.
Martin.
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