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Topic: Telescope making

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Reflector telescope

Reflecting telescope

Mirror

Amateur astronomy

Isaac Newton

	Optical telescope - Wikipedia, the free encyclopedia
		An optical telescope is a telescope which is used to gather, and focus light, for directly viewing a magnified image, making a photograph, etc. The term is used especially for a monocular with static mounting for observing the sky.
		The f-ratio of a telescope is the ratio between the focal length and the aperture (i.e., diameter) of the objective.
		Wide-field telescopes are used to track satellites and asteroids, for cosmic-ray research, and for surveys of the sky.
	en.wikipedia.org /wiki/Optical_telescope (1033 words)

	Amateur telescope making - Wikipedia, the free encyclopedia
		The field of amateur telescope making is considered an offshoot of the amateur astronomy community.
		They build their telescopes for the enjoyment of the hobby, or so they can make a personal contribution to the field of astronomy.
		Since the Newtonian Reflector is the most common telescope built by amateur telescope makers, large sections of the literature on the subject are devoted to fabrication of the primary mirror.
	en.wikipedia.org /wiki/Amateur_telescope_making (1427 words)

	The Galileo Project \| Science \| Telescope
		With the acceptance of the astronomical telescope, the limit on magnification caused by the small field of view of the Galilean telescope was temporarily lifted, and a "telescope race" developed.
		Because of optical defects, the curvature of lenses had to be minimized, and therefore (since the magnification of a simple telescope is given roughly by the ratio of the focal lengths of the objective and ocular) increased magnification had to be achieved by increasing the focal length of the objective.
		From the typical Galilean telescope of 5 or 6 feet in length, astronomical telescopes rose to lengths of 15 or 20 feet by the middle of the century.
	galileo.rice.edu /sci/instruments/telescope.html (2709 words)

	Wayne Schmidt's Telescope Making Page
		The altitude bearings would be be fixed to the telescope tube in such a position and be of such a size so that their centers coincided with the center of gravity of the scope.
		I found it was much easier to make a series of separate masks, one for each zone, out of fl construction paper with two, 3/4-inch diameter holes cut into it to make a mask for testing that particular zone.
		To make the telescope body mounts, cut a vertical slice down the center of a quarter-inch diameter bolt using a cutoff wheel on a Dremel tool or a thin bladed hack saw.
	www.waynesthisandthat.com /telescop.htm (5338 words)

	Bill's 14.5 inch Telescope Making Project
		Some say a homemade telescope is always being worked on and this certainly applies to me. I have since rebuildt the truss tube and mount to make them lighter and more sturdy.
		To improve the balance of the telescope, I later drilled large holes in the pine strips, as shown, to lessen the weight of the cage.
		And by making the secondary cage even lighter, I could make the mount smaller by shifting the balance point closer to the rear of the telescope.
	www.geocities.com /telescope1999/14-5inch.html (12422 words)

	How to Build a Telescope
		Make a series of radial cuts around the edge of the disk to make a set of tabs, Moisten the tabs; then place the tube cap on one end of the principal tube and bend the tabs around the outside of the tube.
		Make the length of the principal tube short enough to allow you to grip the protruding part of the eyepiece tube with your fingers as you adjust the focus.
		With the telescope, you can appreciate that the birds flying in your garden are not all sparrows, but also titmice, robins, finches, flcaps, etc. With your telescope, you will be able to recognize the various species by their colored plumage.
	www.funsci.com /fun3_en/tele/tele.htm (2393 words)

	My Telescope Making Bookshelf (Site not responding. Last check: 2007-10-30)
		While it is not really sufficient in its coverage of mirror making, it is excellent in its coverage of all the rest of telescope making: mainly assembling the tube and building a telescope mount.
		If you want to be able to decide if a telescope is really functioning properly, one of the best ways is to star test it, and this book gives all the practical details for how to star test and interpret what you see.
		Not strictly speaking a telescope making book, this book tells you how to construct star trackers: simple platforms that will allow you to take reasonably long exposures of the sky using just ordinary camera lenses.
	www.telescopemaking.org /bookshelf.html (733 words)

	Amateur Telescope Making Books 1,2 and 3
		The article was about the "Poor Man's" telescope and told the story of how a group of Vermont villagers built their own reflecting telescopes.
		It was to be a fateful event because Albert Ingalls was an editor of Scientific American magazine and telescope making was about to gain a much larger audience through America's preeminent science magazine.
		Some amateur telescope makers were fascinated by the process itself, while others (like the great observer of the night sky, William Herschel) became amateur telescope makers as a means to their ultimate objective of exploration.
	www.telescopes.ca /telescopes/RENDER/5/1019/1030/11543.html (520 words)

	Telescope Making..!
		The 6-inch f/8 Newtonian reflecting telescope is probably the most popular star gazing instrument in use by the amateur astronomers.This is easily understood when we examine the instrument in more detail.
		The figure "f/8" is an optical expression derived from the ratio between the focal length and the diameter of the telescope mirror.
		The name "Newtonian" refers to the over-all design of this type of reflecting telescope in which ray from the objective or main mirror are focused onto a smaller mirror mirror known as the "diagonal".The diagonal is set further up in the telescope tube at a 45 degree angle to the main mirror and the eyepiece.
	www.geocities.com /yatheen/Tele (654 words)

	Cheapest Space Telescope: Making the MOST of $10 million
		The MOST telescope will use a small 15-cm aperture to make observations, compared to the Hubble's 2.4 meter telescope, which is about 16 times larger.
		ET The mantra 'bigger is better' is popular among astronomers, who develop ever-larger telescopes for a better view of the universe.
		The Canadian telescope, dubbed the Microvariability and Oscillation of Stars or MOST telescope, weighs in at 132 pounds (60 kilograms) and measures 2 feet (65 cm) both wide and tall, and about one foot (30 cm) deep.
	www.space.com /businesstechnology/technology/most_telescope_020703-1.html (1138 words)

	Telescopes astronomy Vixen Porta-Mount TAL Telescopes novosibirsk russia coronado pst toucam philips green laser
		Telescope science with amateur astronomy telescopes and professional astronomical telescopes.
		Also, construct your own telescope using your own chosen parts according to your budget using ready made mirrors or make the mirror yourself and save.
		Operating from a hilltop location in the south of Adelaide, Australia, we offer customers a chance to view through various instruments including spotting scopes and binoculars, day or night, to give people an idea what can be seen with the different instruments and their sizes and types.
	www.telescopes-astronomy.com.au (316 words)

	Telescope Making
		Amateur Telescope Makers of Boston - membership is open to all those interested in pursuing astronomy as a hobby.
		Mel Bartels' Telescopes and Telescope Making - includes instructions for motorizing and adding computer control to your telescope.
		Telescope Maker's Projects, A - amateur telescope making using aluminum.
	web.global.net.mt /amateurtelescope.htm (222 words)

	Stellafane ATM: Main Page
		It is also true that if an amateur starts out to build a telescope just for fun he will find, before his labors are over, that he has become seriously interested in the wonderful mechanism of our universe.
		Also, if there are other aspects of telescope making that you're interested in that you don't see on the list please let us know.
		Telescope making is at the heart of the Springfield Telescope Makers - after all its two thirds of our club's name - and on these pages we hope to show your that you too can make your own telescope - and it can be an excellent performer!
	www.stellafane.com /atm/atm_main.htm (743 words)

	Mark's Notes for the Amateur Telescope Maker
		It makes an excellent small planetary scope, and is fairly straightforward to construct.
		This is mainly a list of things that don't necessarily have to do with telescope making, but that other people might find interesting.
		I mean as much as one might try to do telescope making all the time, sometimes other interests do intrude...
	www.telescopemaking.org (871 words)

	Lindsay: Telescope Making (Site not responding. Last check: 2007-10-30)
		Contents include: materials for telescope making, making the mounting, making the clasp and clamp.
		vertical and horizontal slow motions, telescope body, lenses for the telescope, object end, eyepieces, finder and steadying rods, finishing and lacquering, erecting and adjusting the telescope.
		But it could make a great project if you have a lathe and build it from brass tubes with all the accessories.
	www.lindsaybks.com /bks6/teles/index.html (250 words)

	Open Directory - Science: Astronomy: Amateur: Amateur Telescope Making (Site not responding. Last check: 2007-10-30)
		ATM - Amateur Telescope Making - Information on telescope building, equatorial platform, scotch mount, and binocular mount, and information how to let a Dobsonian telescope move smoothly.
		Making and Motorizing of Telescope - Construction of small newtonian and Mel Bartels system for computer control.
		Telescope Making 1997 - 2000 - Personal log of making a 10 inch Newtonian telescope and mirror, including pictures.
	dmoz.org /Science/Astronomy/Amateur/Amateur_Telescope_Making (772 words)

	TELESCOPE MAKING
		Tim Puckett is one of the leading amateur telescope makers in the USA and last summer I was fortunate to spend a couple of nights at his observatory in the Southern Appalachians.
		Another disadvantage of driven alt-az telescopes is that they have a dead zone around the zenith.
		So an equatorial is easiest but because the telescope will be moved under computer control both axes have to have full drives ie a sector arm which is commonly used on the DEC axis is not suitable.
	ourworld.compuserve.com /homepages/david_ratledge/tm7.htm (1463 words)

	Telescope Making Home Page (Site not responding. Last check: 2007-10-30)
		When the Warren Astronomical Society was first formed, telescope making was the mainstay of the group.
		Over the years as commercial telescopes became more available and affordable, the main focus of amateur telescope making took a back seat.
		This did not deter many individuals who continued making telescopes it's just that the Warren club took on a larger purpose, the purpose of advancing the entire range of topics in astronomy.
	mywebpages.comcast.net /mtgproducts (200 words)

	Telescope making 1997 - 2000
		We came up with a few ideas, such as spin-casting epoxy resin, or vacuum forming mylar film, and decided to look on the net (since somebody must have already thought of all this in their own beer garden somewhere else in the world).
		Looking carefully at the pictures you might be able to make out that the mirror is still a bit grey at the centre, so there was still a little more polishing to go at that stage.
		Three years is a long time to be making a telescope (a really dedicated person could knock one out in a few weeks), but I've moved house five times since starting, and run out of materials a few times, and generally had several month long gaps.
	members.fortunecity.com /nikcain (764 words)

	Amateur Telescope Making
		World's largest portable amateur telescope, 41.2" Newtonian reflector with pictures of the telescope and during construction.
		Information to add altitude-azimuth controller and unipolar stepper motor controller to a telescope, and directions with drawings and images of individual parts for a ten inch scope.
		Information on telescope building, equatorial platform, scotch mount, and binocular mount, and information how to let a Dobsonian telescope move smoothly.
	www.squidoo.com /amateurtelescopemaking (576 words)

	Telescope Making - The Bolton Group (Site not responding. Last check: 2007-10-30)
		Gerald is a self taught machinist specialising in aluminium fabrications.
		Brian is a optic maker of some renown having made tens of mirrors, a 5 inch object glass, a Maksutov and a Springfield mounted Newtonian.
		The telescopes detailed here may be copied freely for private use but commercial copying is not permitted.
	ourworld.compuserve.com /homepages/david_ratledge/tm.htm (162 words)

	Mike's Amateur Telescope Making Page
		I've strayed a long ways from astronomy and telescope making; now I'm a software consultant, and I spend most of my free time just hanging out on the Net.
		I had planned to start off again by completing the polishing and figuring of my 10 inch mirror - it is not quite polished out to the edge, and the figure is not spherical.
		After making it spherical I must then carefully parabolize the mirror.
	www.geometricvisions.com /atm (356 words)

	Telescope Making (Site not responding. Last check: 2007-10-30)
		The Amateur Telescope Making web ring comprises sites that are partly or wholly devited to the construction of astronomical telescopes by amateurs.
		Its goal is to provide a searchable index of site which are a source of ideas, inspiration and information for other telescope makers.
		Freeware telescope design software of the most popular telescope systems used by the amateur astronomers and telescope makers, including spot diagrams, ray fans, wave aberrations, optical layout, optimization, tolerancing, mirror testing etc.
	l.webring.com /hub?ring=telescopemaking (779 words)

	Build Your Own Telescope
		In clear, step-by-step instructions, author Richard Berry tells how to build five telescopes, from a simple reflecting telescope suitable for a parent and child to build together to a "research-grade" 10-inch telescope capable of sustaining a lifetime's interest in astronomy.
		He also founded Telescope Making, the quarterly journal behind many of the breakthroughs that made the 1980s such explosive years in the growth of amateur astronomy,
		Most books about telescope making do not include telescope plans, and many assume that you have access to a machine shop in order to make amounting.
	www.willbell.com /tm/tm2.htm (1581 words)

	Jan: Astronomy indexpage
		One of the most rewarding aspects of astronomy is ATM: Amateur Telescope Making.
		Most self-built telescopes are Newtonian telescopes on a Dobsonian mount.
		My first self-built telescope, a 12 inch f/6 Dobsonian is pictured here.
	home.wanadoo.nl /jhm.vangastel/Astronomy (370 words)

	Telescope Making
		Expert amateur astronomers from B.R.A.S. will lead you through the telescope assembly and alignment, provide you with instruction on telescope optics, operation and care, as well as practical methods for how to locate and identify planets, galaxies, star clusters and nebulae during different seasons.
		We also include a Rigel Quick Finder to allow you to point your telescope with a minimum of effort, narrow field and wide field eyepieces, a solar filter kit that will allow you to safely view the sun through your telescope and a high quality planisphere to quickly locate objects in the night sky.
		Materials fee is $390 and covers telescope, guide book, eyepieces, planisphere and materials used during the hands-on activities.
	www.bro.lsu.edu /ICESS/TelescopeMaking.htm (378 words)

	the @stro pages - telescope making
		There are great resources on the web for mirror grinders and telescope makers.
		To that end I've begun working on a 6" piece of Astrosital (low-expansion Russian equivalent to Zerodur) to make a long focal length (f/11) for specialized solar and planetary viewing.
		telescope making ~ observer's log ~ in san diego ~ @stro calendar
	theastropages.com /atm (393 words)

	Amazon.com: Advanced Telescope Making Techniques (Advanced Telescope Making Techniques): Books: Mackintosh (Site not responding. Last check: 2007-10-30)
		This book is an compilation of articles from the newsletter "Maksutov Circulars", a telescope building organization dedicated originally to building Maksutov telscopes, an original, creative idea for telescope design largely fallen out of favor due to it's overly complex design relative to its (marginal) advantages over more conventional designs.
		There is precisely one chapter on "Telescope Construction" which has 12 articles: 4 on fiberglass telescope tubes, and one each on polar alignment, collimation, baffling, and making a telescope tube.
		A more modern approach, and very well-written, is a new book, "The Dobsonian Telescope: A Practical Manual for Building Large Aperture Telescope", by Dave Kriege, owner of Obsession Telescopes, and Dave Berry, long-time telescope making author.
	www.amazon.com /Advanced-Telescope-Making-Techniques/dp/0943396115 (713 words)

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