Definition of Amateur. Examples of Amateur in a sentence. Even though I am an amateur singer, I hope to make a career out of it one day. My friends and I play in an amateur bowling league for fun. I attend many amateur nights at comedy clubs, hoping to make my big break.
Amateirs incentive licensing, a large number of amateurs attained Advanced and Amateur Extra Class licenses. However, several telescope manufacturers have recently developed telescope systems that are calibrated with Amateurs sample use of built-in Amateurs sample, decreasing the time it takes to set up a telescope at the start of an observing session. In areas such as astronomy, amateurs can be invaluable when making specific At Tracy elliott husband texas one name must be used twice in this set as there are five questions and only four names. November
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You should spend about 20 minutes on Questions 1- 13 , which are based on Reading Passage below. During the scientific revolution of the 17th century, scientists were largely men of private means who pursued their interest in natural philosophy for their own edification. Only in the past century or two has it become possible to make a living from investigating the workings of nature.
Modern science was, in other words, built on the work of amateurs. Perhaps surprisingly, however, amateurs — even those without private means — are still important. A recent poll carried out at a meeting of the American Association for the Advancement of Science by astronomer Dr Richard Fienberg found that, in addition to his field of astronomy, amateurs are actively involved in such field as acoustics, horticulture, ornithology, meteorology, hydrology and palaeontology.
Far from being crackpots, amateur scientists are often in close touch with professionals, some of whom rely heavily on their co-operation. Anything that requires expensive equipment is clearly a no-go area. Dr Fienberg makes a strong case for astronomy. There is, he points out, a long tradition of collaboration between amateur and professional sky watchers.
Numerous comets, asteroids and even the planet Uranus were discovered by amateurs. Amateur observers are helpful, says Dr Fienberg, because there are so many of them they far outnumber professionals and because they are distributed all over the world. Another field in which amateurs have traditionally played an important role is palaeontology. Adrian Hunt, a palaeontologist at Mesa Technical College in New Mexico, insists that this is the field in which amateurs have made the biggest contribution.
Despite the development of high-tech equipment, he says, the best sensors for finding fossils are human eyes — lots of them. Finding volunteers to look for fossils is not difficult, he says, because of the near universal interest in anything to do with dinosaurs.
There are, he notes, thought to be as many as 60 million birdwatchers in America alone. Given their huge numbers and the wide geographical coverage they provide, Mr Bonney has enlisted thousands of amateurs in a number of research projects. Over the past few years, their observations have uncovered previously unknown trends and cycles in bird migrations and revealed declines in the breeding populations of several species of migratory birds, prompting a habitat conservation programme.
Despite the successes and whatever the field of study, collaboration between amateurs and professionals is not without its difficulties. Dr Fienberg says that some amateur astronomers are happy to provide their observations but grumble about not being reimbursed for out-of-pocket expenses. Others feel let down when their observations are used in scientific papers, but they are not listed as co-authors.
Dr Hunt says some amateur palaeontologists are disappointed when told that they cannot take finds home with them. These are legitimate concerns but none seems insurmountable. Provided amateurs and professionals agree the terms on which they will work together beforehand, there is no reason why co-operation between the two groups should not flourish.
Last year Dr S. He says that one of the main benefits of the prize is the endorsement it has given to the contributions of amateur scientists, which has done much to silence critics among those professionals who believe science should remain their exclusive preserve. At the moment, says Dr Carlson, the society is involved in several schemes including an innovative rocket-design project and the setting up of a network of observers who will search for evidence of a link between low- frequency radiation and earthquakes.
Having laid the foundations of science, amateurs will have much to contribute to its ever — expanding edifice. Questions Complete the summary below. Write your answers in boxes on your answer sheet. Summary Prior to the 19th century, professional However, while In areas such as astronomy, amateurs can be invaluable when making specific Similarly, in the area of palaeontology their involvement is invaluable and helpers are easy to recruit because of the popularity of Amateur bird watchers also play an active role and their work has led to the establishment of a Occasionally the term 'amateur' has been the source of disagreement and alternative names have been suggested but generally speaking, as long as the professional scientists Questions Reading Passage contains a number of opinions provided by four different scientists.
Match each opinion Questions with the scientists A-D. Amateur involvement can also be an instructive pastime. Amateur scientists are prone to accidents.
Science does not belong to professional scientists alone. It is important to give amateurs a name which reflects the value of their work. Name of scientists A. Dr Fienberg B. Adrian Hunt C. Rick Bonney D. Answer: 1. Essay Vocabulary Topics Related Vocabulary. I consent to this website collecting my details through this form. Send Reset Cancel. Follow Us. Like us on Facebook.
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Amateur astronomy is a hobby where participants enjoy observing or imaging celestial objects in the sky using the unaided eye , binoculars , or telescopes. Even though scientific research may not be their primary goal, some amateur astronomers make contributions in doing citizen science , such as by monitoring variable stars ,  double stars  sunspots ,  or occultations of stars by the Moon  or asteroids ,  or by discovering transient astronomical events , such as comets ,  galactic novae  or supernovae in other galaxies.
Amateur astronomers do not use the field of astronomy as their primary source of income or support, and usually have no professional degree in astrophysics or advanced academic training in the subject.
Amateurs can also join as members of amateur astronomical societies , which can advise, educate or guide them towards ways of finding and observing celestial objects. They can also promote the science of astronomy among the general public.
Collectively, amateur astronomers observe a variety of celestial objects and phenomena. Common targets of amateur astronomers include the Sun , the Moon , planets , stars , comets , meteor showers , and a variety of deep sky objects such as star clusters , galaxies , and nebulae. Many amateurs like to specialise in observing particular objects, types of objects, or types of events which interest them.
One branch of amateur astronomy, amateur astrophotography , involves the taking of photos of the night sky. An early pioneer of radio astronomy was Grote Reber , an amateur astronomer who constructed the first purpose built radio telescope in the late s to follow up on the discovery of radio wavelength emissions from space by Karl Jansky.
Non-visual amateur astronomy includes the use of infrared filters on conventional telescopes, and also the use of radio telescopes. Some amateur astronomers use home-made radio telescopes, while others use radio telescopes that were originally built for astronomical research but have since been made available for use by amateurs. The One-Mile Telescope is one such example. Amateur astronomers use a range of instruments to study the sky , depending on a combination of their interests and resources.
Methods include simply looking at the night sky with the naked eye , using binoculars , and using a variety of optical telescopes of varying power and quality, as well as additional sophisticated equipment, such as cameras , to study light from the sky in both the visual and non-visual parts of the spectrum.
Commercial telescopes are available, new and used, but it is also common for amateur astronomers to build or commission the building of their own custom telescopes. Some people even focus on amateur telescope making as their primary interest within the hobby of amateur astronomy. Amateur astronomers also use star charts that, depending on experience and intentions, may range from simple planispheres through to detailed charts of very specific areas of the night sky.
Amateur astronomers often like to keep records of their observations, [ according to whom? Observing logs typically record details about which objects were observed and when, as well as describing the details that were seen.
Sketching is sometimes used within logs, and photographic records of observations have also been used in recent times. The information gathered is used to help studies and interactions between amateur astronomers in yearly gatherings. Although not professional information or credible, [ according to whom? The popularity of imaging among amateurs has led to large numbers of web sites being written by individuals about their images and equipment. Much of the social interaction of amateur astronomy occurs on mailing lists or discussion groups.
A great deal of the commerce of amateur astronomy, the buying and selling of equipment, occurs online. Many amateurs use online tools to plan their nightly observing sessions, using tools such as the Clear Sky Chart. While a number of interesting celestial objects are readily identified by the naked eye, sometimes with the aid of a star chart, many others are so faint or inconspicuous that technical means are necessary to locate them.
Star hopping is a method often used by amateur astronomers with low-tech equipment such as binoculars or a manually driven telescope. It involves the use of maps or memory to locate known landmark stars, and "hopping" between them, often with the aid of a finderscope. Because of its simplicity, star hopping is a very common method for finding objects that are close to naked-eye stars. The advent of mobile applications for use in smartphones has led to the creation of many dedicated apps.
These apps make use of the inbuilt hardware in the phone, such as GPS location and gyroscope. Useful information about the pointed object like celestial coordinates , the name of the object, its constellation, etc.
These apps are gradually getting into regular use during observing, for the alignment process of telescopes. Setting circles are angular measurement scales that can be placed on the two main rotation axes of some telescopes. By knowing the coordinates of an object usually given in equatorial coordinates , the telescope user can use the setting circle to align i. A computerized setting circle is called a "digital setting circle" DSC.
Although digital setting circles can be used to display a telescope's RA and Dec coordinates, they are not simply a digital read-out of what can be seen on the telescope's analog setting circles. As with go-to telescopes, digital setting circle computers commercial names include Argo Navis, Sky Commander, and NGC Max contain databases of tens of thousands of celestial objects and projections of planet positions.
To find a celestial object in a telescope equipped with a DSC computer, one does not need to look up the specific RA and Dec coordinates in a book or other resource, and then adjust the telescope to those numerical readings. Rather, the object is chosen from the electronic database, which causes distance values and arrow markers to appear in the display that indicate the distance and direction to move the telescope. The telescope is moved until the two angular distance values reach zero, indicating that the telescope is properly aligned.
When both the RA and Dec axes are thus "zeroed out", the object should be in the eyepiece. Many DSCs, like go-to systems, can also work in conjunction with laptop sky programs. Traditional printed sources are subtitled by the epoch year , which refers to the positions of celestial objects at a given time to the nearest year e. Computerized sources, on the other hand, are able to calculate the right ascension and declination of the "epoch of date" to the exact instant of observation.
With these computer-driven telescopes, the user typically enters the name of the item of interest and the mechanics of the telescope point the telescope towards that item automatically. GOTO also allows manufacturers to add equatorial tracking to mechanically simpler alt-azimuth telescope mounts, allowing them to produce an overall less expensive product.
GOTO telescopes usually have to be calibrated using alignment stars in order to provide accurate tracking and positioning. However, several telescope manufacturers have recently developed telescope systems that are calibrated with the use of built-in GPS, decreasing the time it takes to set up a telescope at the start of an observing session.
With the development of fast Internet in the last part of the 20th century along with advances in computer controlled telescope mounts and CCD cameras "Remote Telescope" astronomy is now a viable means for amateur astronomers not aligned with major telescope facilities to partake in research and deep sky imaging. This enables anyone to control a telescope a great distance away in a dark location.
The observer can image through the telescope using CCD cameras. The digital data collected by the telescope is then transmitted and displayed to the user by means of the Internet. An example of a digital remote telescope operation for public use via the Internet is the Bareket observatory , and there are telescope farms in New Mexico ,  Australia and Atacama in Chile.
Because CCD imagers are linear, image processing may be used to subtract away the effects of light pollution, which has increased the popularity of astrophotography in urban areas.
Narrowband filters may also be used to minimize light pollution. Work of scientific merit is possible, however, and many amateurs successfully contribute to the knowledge base of professional astronomers.
Astronomy is sometimes promoted as one of the few remaining sciences for which amateurs can still contribute useful data. To recognize this, the Astronomical Society of the Pacific annually gives Amateur Achievement Awards for significant contributions to astronomy by amateurs. The majority of scientific contributions by amateur astronomers are in the area of data collection. Several organizations, such as the American Association of Variable Star Observers and the British Astronomical Association , exist to help coordinate these contributions.
Amateur astronomers often contribute toward activities such as monitoring the changes in brightness of variable stars and supernovae , helping to track asteroids , and observing occultations to determine both the shape of asteroids and the shape of the terrain on the apparent edge of the Moon as seen from Earth.
A relatively recent role for amateur astronomers is searching for overlooked phenomena e. In the past and present, amateur astronomers have played a major role in discovering new comets. There are a large number of amateur astronomical societies around the world, that serve as a meeting point for those interested in amateur astronomy.
Members range from active observers with their own equipment to "armchair astronomers" who are simply interested in the topic. Societies range widely in their goals and activities, which may depend on a variety of factors such as geographic spread, local circumstances, size, and membership.
For example, a small local society located in dark countryside may focus on practical observing and star parties , whereas a large one based in a major city might have numerous members but be limited by light pollution and thus hold regular indoor meetings with guest speakers instead. Major national or international societies generally publish their own journal or newsletter , and some hold large multi-day meetings akin to a scientific conference or convention.
They may also have sections devoted to particular topics, such as lunar observation or amateur telescope making. From Wikipedia, the free encyclopedia.
For the magazine, see The Amateur Astronomer. For other uses, see Stargazing disambiguation. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Main article: Star hopping. Main article: Setting circles. Main article: GoTo telescopes. This section needs expansion.
You can help by adding to it. November See also: Astrophotography. Play media. Main article: List of astronomical societies. Astronomy portal.
Retrieved September 17, Double Stars. Reidel Publishing Company, Dordrecht. Clay; Koed, Thomas L. The Origin and Evolution of the Universe.
European Southern Observatory. Retrieved March 29, Retrieved January 28, October Ingalls, T. Mirror mirror: a history of the human love affair with reflection. Basic Books.