Good to know

Find out why studying eyes under a microscope is entertaining; how insects’ and arachnids’ eyes differ and what the best way is to observe such an interesting specimen

Depending on the optical design, telescopes are divided into three types: lens (refractors), mirror (reflectors) and mirror-lens (catadioptrics)

Learn what a spider looks like under microscope, when the best time is to take photos of it, how to study it properly at magnification and more interesting facts about observing insects and arachnids

Find an interesting review on the history of the changes to a refracting telescope. You will learn what a refracting telescope and its optical scheme were like in different centuries

This review for beginner explorers of the micro world introduces you to the optical, illuminating and mechanical parts of a microscope and their functions

Read an interesting comprehensive article on telescopes for little astronomers