| Answer | Crossword Clue |
|---|---|
| OPTICS | Telescope lenses, e.g. |
| eyepieces | The lens or group of lenses that is closest to the eye in a microscope, telescope, or other optical instrument |
| eyepiece | The lens or group of lenses that is closest to the eye in a microscope, telescope, or other optical instrument |
| lenses | A piece of glass or other transparent substance with curved sides for concentrating or dispersing light rays, used singly (as in a magnifying glass) or with other lenses (as in a telescope) |
