Observatory

During an afternoon when I had nothing to do, I decided to build something technical with lots of gears using LEGO. And what could be more technical than a proper observatory that could be angled to look at different constellations? 

One side of the observatory displays the set of gears that I used; it looks simple and satisfying. This section of the observatory is simply used to angle the radio dish up and down and the gears at the side merely serve the purpose of slowing down the motion. 

The observatory's other side is covered by a plate that shields most of the machinery from wind and rain. The plating on the back of the observatory is placed at an entirely different angle; it is achieved by using SNOT bricks that are connected to the white section. 

The plate at the front and the entire back section can be removed for maintenance purposes. The front plate slots into the Technic axle that protrudes out of the front, whereas the backplate clips on a Technic-Lego connector at the back. 

The observatory's interior consists of all the machinery that is required. Here, I'm using a modified differential gearbox with a bevel gear connected to the middle differential gear to add extra motion. This way, I can achieve two different outputs around a central axle. 

A video of the motion.

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