I have an ED80 so I'll answer what I can and let other more experienced users fill in the blanks.
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Originally Posted by Superb_Universe
Q2 - I always spend more around 30 minutes in polar alignment and three star alignement and so on.. Is there any suggestion for the permanent setup (marking on the ground)..So that i can put my EQG straight on it for perfect polar alignment??
in this regard? Do i need separate guide scope??
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Marks on the ground for tripod legs always help. Or maybe get a pier done with a notch to south. I wouldn't recommend OAG on an ED80. Would be a bit heavy onthe focuser. It's a light scope. Finder's fine. No flexure there.
Quote:
Originally Posted by Superb_Universe
Q5 - With this scope; Is it possible to do deepsky photography?
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Yes the ED80 is a fine scope. You might want to look into a WO FF type IV to get a perfect field for astro photo.
Quote:
Originally Posted by Superb_Universe
Q7 - Can i use my finder scope as a guide scope?
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Yes you definitely can.