Photograph (silver print) showing the 3-foot Rosse Telescope with later equatorial mounting from the eastern side. Taken about 1880 by Lieutent-Colonel Harry J. Watson who was posted to nearby Newbridge. Photograph showing the 3-foot Rosse Telescope
One of of three platinotype prints of engravings in, 'Selenographia' by Johannes Hevelius, 1647 showing sunspots observed through a telescope. From page 519 and dated 3 May to 16 May 1644. Drawing of sunspots, German, 28 October 1642.
One of of three platinotype prints of engravings in, 'Selenographia' by Johannes Hevelius, 1647 showing sunspots observed through a telescope. From page 525 and dated 27 August to 8 October 1644. Drawing of sunspots, German, 28 October 1642.
One of of three platinotype prints of engravings in, 'Selenographia' by Johannes Hevelius, 1647 showing sunspots observed through a telescope. From page 500 and dated 28 October to 6 November 1642 Drawing of sunspots, German, 28 October 1642.
One of two profile gauges with concave profile which was used by the 3rd Earl of Rosse to measure the 72 inch mirrors used on the largest Rosse telescope. Profile gauge with concave profile