Articles by Mark Armstrong

Observing

Giant moon Titan occulted by Saturn

6 August 2024 Mark Armstrong

Presently, there are a number of events taking place involving Saturn’s moons. Saturn’s moons revolve in the plane of Saturn’s equator, so the outline of their orbits matches that of the ring system. This means when the rings are closed up sufficiently we can see Saturn’s moons undergoing ‘Galilean-type’ phenomena. 

Observing

Chasing lunar shadows

2 April 2024 Mark Armstrong

 There’s so much that the Moon offers to an observer armed with just modest instrumentation and the unaided eye. Here’s some of the Moon’s best sights on an exciting observing journey as the Moon waxes from new to full phase.