


Approximate positions of the Sun, part 1: maximum and minimum altitude

Venus occultation by the Moon, 2020-06-19

A few things to consider when starting in amateur astronomy

Building a DIY dobsonian base for a Skywatcher 200PDS Newtonian telescope

Observing through the Earth’s atmosphere: Light path vs zenith angle.

Building a DIY motorized control for a Skywatcher EQ5, part 4: new motors, test and final thoughts

Building a DIY motorized control for a Skywatcher EQ5, part 3: two steps forward, one backward, and some lessons

Building a DIY motorized control for a Skywatcher EQ5, part 2: important properties of the original system

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