Budget and portability are the final filters. High-quality beginner telescopes typically start between . Avoid "department store" telescopes under $100, which are often poor quality and can discourage new hobbyists. If your budget is tight, a pair of 10x50 binoculars is often a better investment, providing a wide field of view that makes learning the constellations easy.
Newtonians use mirrors to reflect light. They offer the best value, providing much larger apertures for the same price as smaller refractors. They require occasional "collimation," or alignment of the mirrors, but are superior for viewing faint galaxies and nebulae. how to buy a telescope for beginners
The most critical specification for any telescope is its —the diameter of its primary lens or mirror. Unlike a camera zoom, a telescope acts as a "light funnel"; a larger aperture collects more light, allowing you to see fainter deep-sky objects and finer details on the Moon and planets. For beginners, an aperture of at least 4 to 6 inches (100mm to 150mm) is a recommended starting point for meaningful observations. Budget and portability are the final filters