Photoptics Mod for Minecarft 1.10 Mods adds Optical Instruments to minecraft, like telescopes. Currently it adds basic binoculars, which can be crafted by 4 glass panes on the edges, 3 iron ingots on the middle row in the crafting table, and basic handheld telescope, which can be crafted by putting a glass block on the middle of the first row, an iron block on the second row, a glass pane on the third row.
Download link: Photoptics Mod for Minecarft 1.10/1.8.9