After you've been at astronomy for a while, you'll want to go out and buy a small astronomical telescope with a lens diameter of 60 to 80 mm. Chen Cheng-peng points out that this far surpasses what Galileo had at his disposal, and will make observing the silver shroud of Venus, sunspots, Jupiter's four major moons, Saturn's rings, and craters on the moon a piece of cake.
等真正入門，想提昇自己觀星水準，再添購口徑六到八公分的小型天文望遠鏡，「它的效果已經比伽利略的望遠鏡好多了，」陳正鵬細數星象：從太陽黑子、金星銀盔、木星的四顆衛星、土星光環、到月球隕石坑，都能一目了然，盡收眼底。