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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