Requirement

3. Telescopes and binoculars: four explanations, with diagrams

Required

With the aid of diagrams, or real instruments if you have them. Four parts covering why they matter, the kinds there are, the instruments used with them, and how to look after them.

What this is made of

3(a). Why binoculars and telescopes matter, and how they are used
3(b). Several types of telescope compared, including one beyond visible light
3(c). The purposes of three instruments used with telescopes
3(d). Care and storage of telescopes and binoculars, at home and in the field

Where this step comes from

Astronomy Merit Badge Requirements (Merit Badge Hub, last modified 2025-09-19), Requirement 3