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Updated: May 24, 2025
"It was only five hours' travel from Pueblo to Denver, and we went on to that city. The trunks, for some unexplained reason, or for no reason at all, chose to remain at Pueblo. "One telescope-tube reached Denver when we did; but a telescope-tube is of no value without glasses.
In a secondhand store they found a small Gregorian reflector which had an aperture of about two inches. This gave them a little peep into the heavens, but was really only a tantalization. They set to work making a telescope-tube out of pasteboard.
Its velocity is 186,000 miles per second. In 1681 he took up his duties as astronomer at Copenhagen, and built the first transit circle on a window-sill of his house. The iron axis was five feet long and one and a-half inches thick, and the telescope was fixed near one end with a counterpoise. The telescope-tube was a double cone, to prevent flexure.
Three horizontal and three vertical wires were used in the focus. These were illuminated by a speculum, near the object-glass, reflecting the light from a lantern placed over the axis, the upper part of the telescope-tube being partly cut away to admit the light. A divided circle, with pointer and reading microscope, was provided for reading the declination.
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