Beginners who wants to buy a telescope always ask how far can this telescope see or how powerful is this telescope. Franky speaking, most beginners cannot understand the detailed technical information well. I found a very “beginner-friendly” answer to this question.
Beginner: How far can this telescope see?
Expert: You must be referring to how small the object can the telescope resolve!
Beginner: Oh?
Expert: Well, an 8″ telescope can show you the words on the newspaper at 0.88 km (960 yards). By using the formula below, you know how far can your telescope resolve the words on the newspaper.
Distance = D * 0.11 km (120 yards)
Please note that this formula is just meant for easier understanding of resolution of a telescope but not the actual formula to calculate the resolution.
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