Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to choose the right telescope [title] The diameter of the objective lens or mirror is the most important number describing a telescope. [step] Larger diameter lenses or mirrors allow higher resolution (ability to separate closely spaced objects) and will gather more light from faint astronomical objects. They also cost more.

Ending1: Still, smaller diameter lenses tend to be better at this task. [title] Be able to adjust the magnification of the telescope with magnification enhancers. Ending2: Larger diameter lenses or mirrors tend to travel higher than mirrors so it will give you more magnification (not as much as mirrors). The diameter of your viewing space will have to be determined by comparing the diameter of the lens with the diameter of the mirror. Ending3: Consider the size of your objective (or mirror if you're choosing a telescope with closed dowels) if you have questions. [title] Choosing the telescope is easier with larger lenses. Ending4: A good size for a first telescope is roughly four inches (100 mm). Bigger tends to be considerably more expensive and more inconvenient.

Answer format: ending1/ending2/ending3/ending4