Brayebrook Observatory, its history, telescopes and double star programme.
Amateur astronomy, amateur telescope making, double stars,
Dawes limit, the Lord nomogram, Newtonian reflectors, George Calver, German equatorials, astronomical observatories, bifilar micrometers, double image micrometers, Lyot micrometers, divided lens micrometers, Meca-Precis, Cooke Troughton && Simms, eyepieces, polar alignment.
Astronomical articles and notes.
Photographic articles.
Sundri astronomial observations.