Free Pascal Lazarus project for astronomical calculations. Formulas included in this book: "Practical Astronomy with Your Calculator by Peter Duffett-Smith (Third Edition).
This tool is used to generate ephemeris on the Sun, the Moon, the planets, to have the list of Messier and NGC objects observable at a given date.
Project written by François Gouyaud, started in 1991 with turbo pascal on MSDOS.
This project can be run on a Windows or Linux station.