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Flagstaff Hill Maritime Museum and Village
Functional object - Telescope, 1752-1900
... royal national life boat institution... shipwreck-coast flagstaff-hill-maritime-village royal national life ...The discovery of the first telescope in 1608 can be attributed to Hans Lippershey of the Netherlands when he discovers that holding two lenses up some distance apart bring objects closer. He applies for a patent on his invention and this becomes the first documented creation of a telescope. Then in 1668, Newton produces the first successful reflecting telescope using a two-inch diameter concave spherical mirror. This opened the door to magnifying objects millions of times far beyond what could ever be obtained with a lens. It wasn’t until 1729 that Chester Moor Hall develops an achromatic lens (two pieces of glass with different indices of light refraction combined produce a lens that can focus colours to almost an exact point resulting in much sharper images but still with some distortion around the edges of the image. Then in 1729 Scottish instrument maker James Short invents the first parabolic and elliptic, distortion-less mirror ideal for reflecting telescopes. We now come to John Dollond who improves upon the achromatic objective lens by placing a concave flint glass lens between two convex crown glass lenses. This had the effect of improving the image considerably. Makers Information: John Dollond (1707-1761) London England he was a maker of optical and astronomical instruments who developed an achromatic (non-colour distorting) refracting telescope and practical heliometer. A telescope that used a divided lens to measure the Sun’s diameter and the angles between celestial bodies. The son of a Huguenot refugees Dollond learned the family trade of silk weaving. He became proficient in optics and astronomy and in 1752 his eldest son, Peter joined his father in an optical business, in 1753 he introduced the heliometer. In the same year, he also took out a patent on his new lenses. He was elected a fellow of the Royal Society in May 1761 but died suddenly in November and his share in the patent passed to his son Peter. In subsequent squabbles between Peter and the many London opticians who challenged his patent, Peter’s consistent position was that, whatever precedents there may have been to his achromatic lenses, his father had independently reached his practical technique on the basis of his theoretical command of Newtonian optics. As a result of maintaining his fathers patent, Dollond s became the leading manufacturer of optical instruments. For a time in the eighteenth and nineteenth century the word 'Dollond' was almost a generic term for telescope rather like 'Hoover; is to vacuum cleaner. Genuine Dollond telescopes were considered to be amongst the best. Peter Dollond (1731-1820) was the business brain behind the company which he founded in Vine Street, Spitalfields in 1750 and in 1752 moved the business to the Strand London. The Dollonds seem to have made both types of telescopes (reflecting and refracting), possessing the technology to produce significant numbers of lenses free of chromatic aberration for refracting telescopes. A Dollond telescope sailed with Captain Cook in 1769 on his voyage to observe the Transit of Venus. Thomas Jefferson and Admiral Lord Nelson were also customers of the Dollonds. Dollond & Co merged with Aitchison & Co in 1927 to form Dollond & Aitchison, the well-known high street chain of opticians, now fully part of Boots Opticians. They no longer manufacture but are exclusively a retail operation. John Dollond's experiments in optics and how different combinations of lenses refract light and colour gave a better understanding of the divergent properties of lenses. That went on to inform and pave the way for the improvement of our understanding of optics that are represented today. Dollond was referred to in his time as the "Father of practical optics" as a leader in his field he received many prestigious awards. The telescope in the collection is a good example of one of Dollonds early library telescopes and its connection with one of England's 18th-century pioneers in optical development is in itself a significant and an important item to have within the collection. One tube ships day & Night Telescope brass inner tube with timber main tube covered in leather. Unavailable to inspect Inscriptions to determine authenticity.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, telescope, dolland, shipwreck-coast, flagstaff-hill-maritime-village, royal national life boat institution -
Flagstaff Hill Maritime Museum and Village
Equipment - Life Jacket, 1918-1940s
This eight compartment life jacket date from around 1918 to 1940s, when kapok was used as the main filling for life jackets. Cork was used before that time, and synthetic materials began to be used from the mid-1940s. Life Jackets - Life jackets were part of the equipment carried by the Life Saving Rescue Crew of South Western Victoria, including Warrnambool, from around 1858 until the 1950s. The purpose of a life jacket is to keep the wearer afloat until he or she is rescued from the water. Life jackets were first invented in 1854 by Captain Ward of the Royal National Lifeboat Institution in Britain. The early life jackets were filled with cork, which is very buoyant. However, many times he cork caused the jacket to rise up quickly with a force that caused unconsciousness, sometimes turning the person face down in the water , causing them to drown. After the tragic loss of the ship RMS Titanic in 1912 and the lost lives of those onboard, a woman named Orpheus Newman designed the Salvus life jacket (Salvus means safe), which was filled with kapok instead of cork. Kapok comes from seed pods of the Ceiba Pentandra tree and is waterproof as well as buoyant. These Salvus jackets were used by the Royal Navy until new synthetic materials became available around the time of World War II.This life jacket is significant for its connection with local history, maritime history and marine technology. Lifesaving has been an important part of the services performed from Warrnambool's very early days, supported by State and Local Government, and based on the methods and experience of Great Britain. Hundreds of shipwrecks along the coast are evidence of the rough weather and rugged coastline. Ordinary citizens, the Harbour employees, and the volunteer boat and rescue crew, saved lives in adverse circumstances. Some were recognised as heroes, others went unrecognised. In Lady Bay, Warrnambool, there were around 16 known shipwrecks between 1850 and 1905. Many lives were saved but tragically, eight lives were lost.Life jacket, canvas covered, stitched into eight kapok filled compartments. One canvas strap with brass buckle is attached. Shoulder straps are no longer attached. Rflagstaff hill maritime museum and village, flagstaff hill, maritime museum, maritime village, warrnambool, great ocean road, lady bay, warrnambool harbour, kapok, life jacket, salvus jacket, life saving, rescue, rescue crew, l.s.r.c., life saving equipment, marine technology, lifeboat, shipwreck victim, vintage, captain ward, royal national lifeboat institution, orpheus newman