I hope you agree with me when I say: Being passionate about Astronomy is definitely interesting but not so interesting when it comes to the cost of it. If you want to treat your eyes, only a telescope would work best as it allows deep sky viewing. Before you juggle between which telescope to purchase, let me guide you through it. A Telescope is basically an instrument designed to see far away objects by making it appear large, best telescope under 300 dollars here, hence closer. There are mainly 2 types of telescopes; Refractor Telescopes & Reflector Telescopes.