Detaljer

P-195

"Astronomical Instruments. Dr. Herschel's Forty Feet Reflecting Telescope."

Tanner, Benjamin, Anderson, H., Dobson, Thomas

Illustration of Herschel's forty-foot telescope.

1798

Engraving, Black ink

United States

	Imperial(in)		Metric(cm)
Height			26.6
Width			19.5
Depth
Diameter
Circumference

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	Imperial(in)		Metric(cm)
Height			27.1
Width			21.4
Depth
Diameter
Circumference

	Imperial(in)		Metric(cm)
Height
Width
Depth
Diameter