The Porter Garden Telescope, 1924

[chamisa.livejournal.com]

From the March 1924 issue of Country Life Magazine.

Comments

[singeaddams.livejournal.com]

Oh, my god, I want one.

[dexter-fox.livejournal.com]

Yeah. Those dried sea floors on the moon are very identifiable. Call one Tranquility.

[crabofdoom.livejournal.com]

"Belts and moons of Jupiter"...? Why just those? How can you see those and not Jupiter, itself? It's flippin' huge!

I can't wrap my head around how the image gets to the eyepiece. I'm sure I must be looking at the device wrong.

[erik]

There is a concave mirror in the base. You point that at what you want to view. Its focal point is at the end of that arm, where there is a prism, which bends the light around into the eyepiece, perpendicular. It's a Newtonian, but without the tube.

The top illustration is misleading, because while it shows the distant boat, and the inset shows a telescopic view of the boat, the telescope appears to be inclined too high to actually be pointed at the boat.