Replica in the William Herschel Museum, Bath, Somerset | Bath, of a telescope similar to that with which Herschel discovered Uranus

The term for this class of objects is a partial misnomer that originated ( 1784 or 1785 ) with astronomer William Herschel, because when viewed through his telescope, these objects appeared to be clouds ( nebulae ) that were similar in appearance to Uranus, the planet that had been discovered telescopically by Herschel.

In an effort to polish a badly tarnished public image, Yerkes decided in 1892 to bankroll the world's largest telescope after being lobbied by the astronomer George Ellery Hale and University of Chicago president William Rainey Harper.

The first ever micrometric screw was invented by William Gascoigne in the 17th century, as an enhancement of the vernier ; it was used in a telescope to measure angular distances between stars and the relative sizes of celestial objects.

However, this invention was not published until 1827, so this type of telescope has become associated with a similar design by William Herschel, the Herschelian telescope.

For nearly fifty years following their discovery, Titania and Oberon would not be observed by any instrument other than William Herschel's, although the moon can be seen from Earth with a present-day high-end amateur telescope.

Messier and German-born astronomer William Herschel speculated that the nebula was formed by multiple faint stars that were unresolvable with his telescope.

Ashfield is the birthplace of prominent director Cecil B. DeMille ( whose parents were vacationing in the town at the time ), Alvan Clark, nineteenth century astronomer and telescope maker, and William S. Clark, member of the Massachusetts Senate and third president of Massachusetts Agricultural College ( now UMass-Amherst ).

John William Draper, an American physician, chemist and scientific experimenter, managed to make the first successful photograph of the moon a year later on March 23, 1840, taking a 20-minute-long daguerreotype image using a 5-inch ( 13 cm ) reflecting telescope.

* William Parsons, 3rd Earl of Rosse, astronomer and builder of the then largest telescope in the world.

During this time William perfected his telescope making, building a series of ever larger devices that ultimately ended with his famous focal length instrument.

William Gascoigne was the first who commanded a chief advantage of the form of telescope suggested by Kepler: that a small material object could be placed at the common focal plane of the objective and the eyepiece.

* William Herschel Telescope, Ground-based telescope on La Palma

The Herschelian reflector is named after William Herschel, who used this design to build very large telescopes including a 49. 5 inch ( 126 cm ) diameter telescope in 1789.

* William Herschel ( astronomer to George III and discoverer of the planet Uranus ) lived with his sister in a house on Horton Road in 1782 and from 1783 to 1785, he occupied " The Lawn " on Horton Road and built a 20 ft telescope in the garden.

Charles Wesley Tuttle was an amateur astronomer who constructed his own telescope, and on a visit to the Harvard Observatory so impressed William Cranch Bond that by 1850 he was hired as an assistant observer.

Henry Draper's father, John William Draper, was an accomplished doctor, chemist, botanist, and professor at New York University ; he was also the first to photograph the moon through a telescope in the winter of 1839 – 1840.

The speculum metal mirror from William Herschel's 1. 2-meter ( 49. 5-inch ) diameter " 40-foot telescope ", at the Science Museum ( London ) | Science Museum in London.

Although speculum metal mirror reflecting telescopes could be built very large, such as William Herschel's 126-cm ( 49. 5-inch ) " 40-foot telescope " of 1789 and Lord Rosse 1845 183-cm ( 72-inch ) mirror of his " Leviathan of Parsonstown ", impracticalities in using the metal made most astronomers prefer their smaller refracting telescope counterparts.

Lawrence Parsons, 4th Earl of Rosse KP FRS ( 17 November 1840 – 29 August 1908 ) was the son and successor of the astronomer William Parsons, 3rd Earl of Rosse who built the " Leviathan of Parsonstown " telescope, largest of its day, and his wife, the Countess Rosse ( née Mary Field ), an amateur astronomer and pioneering photographer.

Picard was the first to attach a telescope with crosswires ( developed by William Gascoigne ) to a quadrant, and one of the first to use a micrometer screw on his instruments.

Pogson awarded the honour of naming it to William Henry Smyth, the previous owner of the telescope used for the discovery.

From the back garden of his house in New King Street, Bath, and using a, ( f / 13 ) Newtonian telescope " with a most capital speculum " of his own manufacture, in October 1779, Herschel began a systematic search for such stars among " every star in the Heavens ", with new discoveries listed through 1792.

Herschel discovered that unfilled telescope apertures can be used to obtain high angular resolution, something which became the essential basis for interferometric imaging in astronomy ( in particular Aperture Masking Interferometry and hypertelescopes ).

Herschel wrote many papers and articles, including entries on meteorology, physical geography and the telescope for the eighth edition of the Encyclopædia Britannica.

A discovery by the infrared telescope Herschel in conjunction with other ground based telescopes, determined that black patches of space in certain areas encompassing a star formation were not dark nebulae but actually vast holes of empty space.

* 1789-William Herschel finishes a 49-inch ( 1. 2 m ) optical reflecting telescope, located in Slough, England

* Herschel Space Observatory, ESA's far infrared space telescope

Telescopes operating in this band include the James Clerk Maxwell Telescope, the Caltech Submillimeter Observatory and the Submillimeter Array at the Mauna Kea Observatory in Hawaii, the BLAST balloon borne telescope, the Herschel Space Observatory, and the Heinrich Hertz Submillimeter Telescope at the Mount Graham International Observatory in Arizona.

John Herschel had been expected to find the comet first, as he was at the time in South Africa with his 20 ft focal length reflector-at this time the largest telescope in the world.

The disk and rings phenomenon had been known prior to Airy ; John Herschel described the appearance of a bright star seen through a telescope under high magnification for an 1828 article on light for the Encyclopedia Metropolitana:

The William Herschel Telescope ( WHT ) is a optical / near-infrared reflecting telescope located at the Observatorio del Roque de los Muchachos on the island of La Palma in the Canary Islands, Spain.

The telescope, which is named after William Herschel, is part of the Isaac Newton Group of Telescopes.

Replica of a telescope similar to that with which Herschel discovered Uranus

Many astronomical and musical artifacts are on display, including a replica of a telescope similar to that with which Herschel discovered Uranus, and a full scale reproduction of a lamp micrometer.

The medal features an image of the 40-foot telescope that was constructed by German-born astronomer Sir William Herschel.

Observations of such a star were made difficult by the limited field of view of Bradley and Molyneux's telescope, and the lack of suitable stars of sufficient brightness.

Significant progress in Big Bang cosmology have been made since the late 1990s as a result of advances in telescope technology as well as the analysis of data from satellites such as COBE, the Hubble Space Telescope and WMAP.

After the invention of the telescope, measurements were made by observing occultations of stars by the Moon, which allowed the derivation of more closely spaced and more accurate values for ΔT.

In that year Smith made Seen Through the Telescope, in which the main shot shows street scene with a young man tying the shoelace and then caressing the foot of his girlfriend, while an old man observes this through a telescope.

The four moons were discovered sometime between 1609 and 1610 when Galileo made improvements to his telescope, which enabled him to observe celestial bodies more distinctly than had ever been possible before.

As a result of improvements Galileo Galilei made to the telescope, with a magnifying capability of 20 ×, he was able to see celestial bodies more distinctly than was ever possible before.

The first solution to the problem of deriving an orbit of binary stars from telescope observations was made by Felix Savary in 1827.

In 1921 Albert A. Michelson made the first measurements of a stellar diameter using an interferometer on the Hooker telescope.

* Galileo Galilei ( 1564 – 1642 ) improved the telescope, with which he made several important astronomical discoveries, including the four largest moons of Jupiter, the phases of Venus, and the rings of Saturn, and made detailed observations of sunspots.

Galileo's main contributions to the acceptance of the heliocentric system were his mechanics, the observations he made with his telescope, as well as his detailed presentation of the case for the system.

This 40-inch aperture instrument was also the second ( and final ) telescope made by famed optician, George Ritchey.

Modifications of the Boeing 747SP airframe to accommodate the telescope, mission-unique equipment and large external door were made by L-3 Communications Integrated Systems of Waco, Texas.

Tracking errors in guiding the telescope during the long exposure made the photograph came out as an indistinct fuzzy spot

This made the image focus at the side of the telescope tube, where the observer could view the image with an eyepiece without blocking the image.

The firm's successor, Merz und Mahler, made a telescope for the New Berlin Observatory, which confirmed the existence of the major planet Neptune.

Possibly the last telescope objective made by Fraunhofer was supplied for a transit telescope at the City Observatory, Edinburgh, the telescope itself being completed by Repsold of Hamburg after Fraunhofer's death.

Unfortunately, because of the harsh criticism that he encountered, especially that of René Descartes, he made no attempt to build a telescope of his own invention.

Much larger binoculars have been made by amateur telescope makers, essentially using two refracting or reflecting astronomical telescopes.

He made observations of the steadiness and clarity of star images with the 3. 6-inch ( 9 cm ) Sheepshanks telescope and found both much better than at Edinburgh.

A recording of the minutes in which British technicians at the radio telescope facility in Jodrell Bank observed Luna 15's descent was first made available to the public on 3 July 2009.

During the next decade, two additional repair missions were made ( March 2002 and in May 2009 ), eventually bringing the telescope to even better that its initially intended performance.

During the Ninth Pass of the Red Star, population pressure and improved technology made possible the recolonization of the Southern Continent and the rediscovery of the original settlements along with the creation of brand new ones such as the telescope project on the oft forgotten Western Continent mentioned towards the end of The Skies of Pern.