| Date | Person | Description |
|---|---|---|
| Cysat, Johann Baptista | Studied mathematics, astronomical observations in Ingolstadt | |
| 1612 – 1615 | Perovius, Szymon | Studied astronomical observations, proper instrument use in Kalisz |
| 1641 – 1644 | Solski, Stanisław | Studied mathematics, mechanics in Kalisz |