White Oak Observatory

BLOG Concerning Jim Bruton’s Practicing Amateur Astronomy Without a License

Notes from the cloudy state of Oregon, Part 1: What can a 71 mm refractor and a DSLR accomplish?

Garage Foundation and Floor

This model is nominally to check shadow angles for the sun in winter and summer but those are easily calculated. I just liked making a model.
Footing trench dug by hand, insulation and gravel added.
Vapor barrier 3 mil plastic added
Wire mesh added.
gravel on top
It took two concrete trucks

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