File:DUN LAOGHAIRE - THE EAST PIER LIGHTHOUSE (1604426004).jpg
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editDescriptionDUN LAOGHAIRE - THE EAST PIER LIGHTHOUSE (1604426004).jpg |
THE EAST PIER LIGHTHOUSE As the East Pier took shape, a wooden beacon was placed at its extremity to warn shipping, and moved away from the shore as work progressed (fit 10). The Corporation for Improving and Preserving the Port of Dublin (est. 1786) also known as the Ballast Board, had assumed the responsibility for lighting the Irish coast in 1810. Later, these two functions were separated, when the Commissioners of Irish Lights (CIL) were established in 1854. The small lantern (on the end of the east pier while the pierheads were being discussed) can be seen in an engraving of 1834 from the Dublin Penny Journal. In the Commissioners of Public Works Report of 1845 it is recorded "On the east pier-head the new lighthouse is considerable advanced, and will be completion the course of the coming season" . This permanent lighthouse and dwelling was designed by Chief Engineer with the Ballast Board, George Halpin, with some alterations by Jacob Owen (figs 13 & 14). The cost of the granite tower was £937, paid to the contractors. The light here was established on 1st October 1847, 41 feet above high water, and of 12,000 candle-power. As early as 1877 the CIL received suggestions for improving the power and range of the Kingstown lights. In 1892, the City of Dublin Steam Packet Company, which had a monopoly on the Holyhead-Kingstown mail route, complained to the Commissioners of the poor harbour lighting. An Inspection Committee was established and alterations recommended. The tower on the east pier was heightened by 12 feet, thus casting a beam on the Mugglin rocks off Dalkey for the first time. The 'dioptric' lighting system was installed, which involves the refraction of light rays from a source (an oil wick lamp), using glass prisms, so that they are parallelised and aimed at the horizon (ie the approaching mariner). The fog bell was replaced in September 1852 by a tall wooden belfry with a new bell inscribed SHERIDAN DUBLIN MAKER 1852. This manually operated device was succeeded by a reed horn, the firing of a gun, and a mechanised bell (from 1907). In 1944 a diaphone fog signal was installed, consisting of a piston driven by compressed air. In July 1968 the East Pier station switched from vapourised paraffin to electricity, and became unmanned. The new candle-power was 226,000. |
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DUN LAOGHAIRE - THE EAST PIER LIGHTHOUSE
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Author | William Murphy from Dublin, Ireland |
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This image, originally posted to Flickr, was reviewed on 22 October 2013 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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current | 02:11, 22 October 2013 | ![]() | 2,048 × 1,365 (557 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | Transferred from Flickr by User:AlbertHerring |
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Camera manufacturer | Canon |
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Camera model | Canon EOS 5D |
Exposure time | 1/500 sec (0.002) |
F-number | f/11 |
ISO speed rating | 100 |
Date and time of data generation | 13:43, 17 October 2007 |
Lens focal length | 100 mm |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
File change date and time | 20:51, 17 October 2007 |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 13:43, 17 October 2007 |
APEX shutter speed | 8.9657836644592 |
APEX aperture | 6.9188626907074 |
APEX exposure bias | −1 |
Maximum land aperture | 4.375 APEX (f/4.56) |
Metering mode | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Focal plane X resolution | 3,086.9259259259 |
Focal plane Y resolution | 3,091.2954545455 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |