| Date | Person | Description |
|---|---|---|
| 1664 – 1668 | Bonfa, Jean | Studied theology in Avignon |
| Bouvet, Joachim | Studied theology in Paris, Bourges | |
| 1719 – 1722 | Carboni, Giovanni Battista | Studied theology in Naples |
| Carboni, Giovanni Battista | Carboni conducted astronomical observations together with Capassi in Lisbon | |
| Cassani, José | Studied philosophy, theology in Alcalá de Henares | |
| 1613 – 1617 | Cysat, Johann Baptista | Studied theology in Ingolstadt |
| Cysat, Johann Baptista | Studied mathematics, astronomical observations in Ingolstadt | |
| Cysat, Johann Baptista | Cysat helped Scheiner to conduct astronomical observations in Ingolstadt | |
| Fournier, Georges | Studied theology in La Flèche, Bourges | |
| Fournier, Georges | Fournier collaborated with Boulliau on astronomical observations in Paris | |
| 1766 – 1770 | Güssmann, Franz | Studied theology in Vienna |
| von Hallerstein, Augustin |
Studied theology in Graz
For four years |
|
| 1776 | Hell, Maximilian | Since 1776, Güssmann collaborated with Hell on astronomical observations in Vienna, leading up to Hell’s publication “ Ephemerides astronomicae ” |
| Hell, Maximilian | Hell assisted Franz in doing astronomical observations in Vienna | |
| 1747 – 1751 | Hell, Maximilian | Studied theology in Vienna |
| 1768 – 1769 | Hell, Maximilian | On invitation by the Danish King Christian VII, Hell and Sajnovics conducted astronomical observations on the isle of Vardø in 1768–1769 |
| 1730 – 1733 | Kéri, Ferencz Borgia | Studied theology in Trnava |
| 1613 – 1616 | Kirwitzer, Venceslaus Pantaleon | Studied theology in Graz |
| 1768 – 1769 | Koc, Jan | Studied theology in Warsaw |
| 1769 – 1772 | Koc, Jan | Studied theology in Vilnius |