- Planet Jupiter Drawings (on A4 sheets)
Pencil drawings of the planet Jupiter on forms of the “Groupement planetaire Société Astronomique de Suisse” obtained from 1963 to 2010 by various observatories, mainly by S.Cortesi at the Specola, with the private 250 mm Newton reflector. - Notebook 1
Visual observations of Jupiter, and Saturn from 1952 to 1955, of lunar details from 1953 to 1955, performed in Lugano (via Madonnetta 17) with 180 mm Newton azimuth reflector. From 1956 to 1957 always in Lugano, with a 250 mm Newton azimuth reflector. From 1958 to 1962 at Specola di Locarno Monti, with a 250 mm Newton reflector, mainly visual observations of Jupiter. - Notebook 2
- 1954-1961 visual observations of lunar details, from 1954 to 1957 in Lugano (Newton 180 mm reflector), from 1958 to 1961 at the Specola di Locarno Monti (Newton 250 mm reflector).
- 1954-1956 visual observations of Mars at Lugano (180 mm ref.).
- 1958-2003 visual observations of Mars at Locarno-Monti (250 mm reflector).
- Protuberances – version 1
Visual observations of solar protuberances in the red hydrogen line with Zeiss spectrograph (ETH) and 150 mm refractor at the Solar Specola in 1957-1958. Pencil drawings. - Protuberances – version 2
Visual observations of solar protuberances in the red hydrogen line with Zeiss spectrograph (ETH) and 150 mm refractor at the Solar Specola in 1957-1958. Pencil drawings.
All of these documents were scanned in 2020 by Renzo Ramelli, before being sent to the ETH-Zurich University Archives.