Presenters: Than Rattanakij and Pannawish Tanthawichian

As a part of our school project, we explained the equatorial coordinate system (ECS) with our DIY model.

The topic that we covered are these:
Celestial equator
Ecliptic
Equinox and Solstice
Declination and Right Ascension
How to transform Altitude in HCS to Declination in ECS
Circumpolar star

Note that we are not real professors. Just for laughs.

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