| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Created by a French astronomer in the 1930s, the coronagraph is a type of this | a telescope | $400 | DJ | SCIENTIFIC DEVICES & INSTRUMENTS | 2023-05-17 | #8873 | |
| By mounting lenses in a tube, Dutch optician Hans Lippershey created one before Galileo | a telescope | $400 | DJ | SCIENTISTS | 1991-05-31 | #1570 |