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I was with the Department of Radio Astronomy (DRA; until 1996 Torun Radio Astronomy Observatory, TCfA; presently part of the Institute of Astronomy) since 1972, i.e. when I have finished studying at the Nicolaus Copernicus University till retirement in 2015. As a scientific worker for some 8 years I have been responsible for carrying out the solar observations at 127 MHz and their analysis (summary; this eventually led to my Ph.D. in 1980). Then I engaged myself in the VLBI (Very Long Baseline Interferometry) methods and techniques, especially in applications of VLBI to astrometry and geodesy. Among my other scientific interests were: astronomical time and calendars (see e.g. a sundial design, procedures for conversion of the Gregorian, Julian, Persian/Jalaali calendars and Julian Day Number, and Easter dating), ephemerides of the solar system bodies (Sun, Moon and planets; see e.g. my calculations of beginnings of seasons, zodiacal signs and of phases of the Moon – till 2025 to 2100), solar and lunar eclipses and certain aspects of radio astronomical instruments: receivers and telescopes (see e.g. some analyses related to our existing 32 m telescope and an offset paraboloid idea, OptiCass – a new software for developers of Cassegrain telescopes, and an analysis of BBC properties). Of about a hundred of my publications (some arranged by topic are shown here) only one seems to have aroused real worldwide interest and firm acceptance: "Accurate Algorithms to Transform Geocentric to Geodetic Coordinates". After Warsaw authorities refused to approve my thesis for a higher scientific degree (defended in 1994), since 1996 I took a position devoted mainly to technical duties. An interesting scientific endeavour I soon afterwards got involved into is a search for gravitational wave signals (old site)– first ever attempt of this kind.