The most common mistake for beginners is buying a telescope based on "magnification" power.
: For beginners, an aperture between 4 and 8 inches (100mm to 200mm) offers the best balance of performance and price. 2. Choosing an Optical Design telescope buying guide for beginners
: The aperture is the diameter of the main lens or mirror. It determines how much light the telescope gathers. More light means you can see fainter objects (like galaxies) and finer details on bright ones (like the Moon's craters). The most common mistake for beginners is buying