Suiters star testing astronomical telescopes, discusses how to do it. Star testing your telescope backyard astronomers guide. Sct collimation under adverse circumstances astromart. Suiters star testing astronomical telescopes telescope making magazine no longer published jean texereaus how to make a telescope stephen j.
Suiters excellent star testing astronomical telescopes. Manual for optical evaluation and adjustment is the star testers bible, and tells you every. It tests the telescope for precisely what it was meant to do. Pendleton, or 1888current, september 23, 1915, roundup souvenir edition, page page eleven, image 11, brought to you by university of oregon libraries. It is the oldest and most sensitive of the optical testsan inspection of the diffraction image itself. The brightest parts of the visible spectrum are deliberately folded into the tightest bundle, with the deep red and violet ends hanging. Suiter s book, star testing astronomical telescopes. From richard berrys foreword to the second edition. Finally, harold suiters book star testing astronomical telescopes. This is a great book, and every amateur should have a. It is a purely theoretical book based on state of the art calculations of the diffraction phenomena in astronomical telescopes peformed and written by a physicist. A profound source of psychological confusion about star doughnuts, whose main function in life is, and ought to be, collimating, is the entire industry of people who are busy obsessing about their optics because of suiters book on star testing. By all means pick up a copy of suiters star testing astronomical telescopes.
Sep 21, 2019 not an expert on star testing so take my judgment with a grin of salt. Aspects of instruments and observing, explained by ianmorison. The hard part here is you sent some images that do not represent this exact picture. The infocus diffraction pattern at high power, a star looks like a distinct spot surrounded by a series of concentric. Illustration 1 shows the star test of a perfect 8 telescope. But the ultimate test of an entire telescope is the star test. Suiter, star testing astronomical telescopes 2nd ed, willmannbell, 2008. After verifying the illuminated field areas using the newt software program, i.
The star test rather than narrowing the scope of the book to testing individual components, suiters focus of the book is a test method that can be used at the observing site, so that all the problems that impact on a telescopes. I still managed two early twilight jupiter sessions, see the two sketches on this. Suiter, star testing astronomical telescopes 2nd ed, willmann. It is possible to find different star tests for many different telescopes 7 but it is usually. With the hubble optics 5 star artificial star, telescopes are truly easy to test and collimate.
Suiter s excellent star testing astronomical telescopes. It is important to have the source far enough away, as explained in the book. I read several telescope and mirror making books and visited many amateur telescope making or atm websites to learn how to build a 14. While not the brightest star, there was no detectable color. By doing so in simple terms he arms his audience with enough knowledge to shop for a quality refractor with a fair. To put this in perspective, lets consider a set of 3 mm thick filters. Spreadsheet to reduce and analyse the raw data and display the results. Looking in suiters book1, i would say that the dominant aberration was spherical one at the level of 6 to 5. Aug 28, 2010 harold suiter, in his book star testing astronomical telescopes, provides an excellent analogy to describe the essence of a classical achromat. Everyday low prices and free delivery on eligible orders. Harold suiters method atmj 2 chap digital knifeedge test reduction. Aspects of instruments and observing, explained by.
Video camera and frame grabber to capture series of images. With the hubble optics 5star artificial star, telescopes are truly easy to test and collimate. In chapter 2 the author has a condensed star test manual for those who want a quick start into testing. Suiter s star testing astronomical telescopes telescope making magazine no longer published jean texereau s how to make a telescope stephen j. This web page provides an overview of my large homemade telescope making project. Suiters book, star testing astronomical telescopes. On the other hand, this info is just invaluable to an amateur telescope owner. Those in the 200k were slightly less precise at about onethird wave. Full text of air corps news letter, january 1, 1940 see other formats. But a quick look at the first couple of chapters, a little staring at. Bad or poorlyaligned instruments fail the star test unambiguously. Attitude from chaos manor south rod mollises skywatch. Eugene, or, and the national digital newspaper program.
Hubble optics 5star artificial star for testing and. This book has probably everything you may want to know about the theory of star testing. Achromatism can be compared to tying the spectrum in a knot. The objective view march 2006 newsletter of the northern. Taking advantage of improved measurement efficiency, the star reading 2. Startest results apply to the complete imaging performance of the telescope. The astronomical unit tutorials basic star testing.
A manual for optical evaluation and adjustment second edition by harold richard suiter. Tonkins amateur telescope making john walleys your telescope, a construction manual wilkins and moores how to make and use a telescope. It has often been stated that star testing is really only valid for simple. By giving its readers a simple, sensitive, and reliable test for optical performance, he enhanced the observing experience of every amateur astronomer who. Org calendar february 24, 2017 last day to submit rule changes before the trial of champions. I first tried it with the amici diagonal and the 9 mm eyepiece on a bright star. About how that test works, why it is so revealing, what it reveals etc. Split and splice of pictures to determine null crossings. The shaping and testing of two 20 optical telescope mirrors. Mar 15, 2009 buy harold richard suiters star testing astronomical telescopes. Star testing astronomical telescopes, a manual for optical. Harold richard suiters star testing astronomical telescopes author.
Star testing astronomical telescopes second edition astromart. It is not often that a book opens the eyes of a whole generation of amateur astronomersbut the first edition of dick suiters star testing astronomical telescopes was just such a book. Apr 02, 2012 and another page you might have seen floating around, borrowed from suiter s star testing re. The size of our scope does make atmospheric turbulence a problem.
From my melles griot optics guide 5 catalog, in the section entitled fundamental optics, they say that the. Company seven suiter star testing astronomical telescopes. The star test is so revealing and so highly useful to evaluating your scope. And another page you might have seen floating around, borrowed from suiters star testing re. Buy harold richard suiters star testing astronomical telescopes. Harold richard suiters star testing astronomical telescopes. About the first thing i did, at first light with this scope was to star test it.
A manual for optical evaluation and adjustment, 2nd ed. Harold richard suiter is the author of star testing astronomical telescopes 4. The first panel is inside focus, the middle panel is at focus, and the right panel is the same distance outside that the first panel is inside. After reading the same article by the late nils, its the only method i use when away from home using may 2nd gen laser. The length of the star reading test was shortened and standardised.
A manual for optical evaluation and adjustment second edition. Nonetheless, a backyard look at capella with a 5mm nagler showed a nice compact airy disk with a very fine ring close to the disk. Renaissance place id can be used during setup of accelerated reader on ipad, iphone, or ipod touch and during setup of star reading, star math, star early literacy, and star reading spanish on ipad. Fusion of protons into helium in the star s center generates heat and pressure that can support the weight of the star. Thoughts on optical aberrations and simple telescope testing free download as pdf file. It is not a poor substitute or a workaround that uses bits and pieces of the optical system. March 31, 2017 deadline to submit hall of fame nominations. It uses the entire working aperture and all the elements of a telescope. Use a good quality plossl eyepiece that will give you a least 300 power for collimating and star testing. A manual for optical evaluation and adjustment is the star testers bible, and tells you everything that you could possibly want to know about star testing. With good optical quality and lots of included accessories. With the tde out of the way, interpreting the star test would be a little easier. By all means pick up a copy of suiter s star testing astronomical telescopes.
Suiters star testing astronomical telescopes to learn more about what this test can tell you. Pulling out bruce suiters book, star testing astronomical telescopes, and using the illustrations for 0%. After verifying the illuminated field areas using the. Pdf harold richard suiters star testing astronomical. Harold richard suiter author of star testing astronomical. Kitchen table collimation of a cassegraintype reflector. The unit should be kept in a clean ziploc bag when not in use, separated from the magnetic mask. Engineering, design and construction of portable newtonian telescopes, advanced telescope making techniques volume 1 optics, advanced telescope making techniques volume 2 mechanica, a manual for amateur telescope makers, amateur telescope making, the best of amateur telescope making journal, build your own telescope, the dobsonian telescope star. Star testing astronomical telescopes a manual for optical. The books say that you should get a good infocus star image looking at a mag.
By giving its readers a simple, sensitive, and reliable test for optical. Richard suiters book star testing astronomical telescopes, as well as the freeware program abberator plus several other sources suggested using a secondary that would result in less than 20% central obstruction. Thoughts on optical aberrations and simple telescope testing. In principle, all you need for that is a steady star, your telescope, a shortfocallength eyepiece, and a copy of richard suiters book on startesting optical telescopes. These notes relate to reflectors with central obstructions newtonian, cassegrainian, etc. In the meantime, yes some ronchi pictures might really help here. Star testing astronomical telescopes is the bible of telescope star testing testing and adjustment. A manual for optical evaluation and adjustment 2 by suiter, harold richard isbn. Bills homemade telescope making project this web page provides an overview of my large homemade telescope making project. Tests performed on different astronomical telescopes. English gives short but quite informative instructions on how to evaluate visually. Renaissance place id is a unique identifier that provides a shortcut to your renaissance place site.
The star test is administered by examining star images at high power, both in focus and out of focus. I am going to search some pictures in suiter s book a bit and see if i cant find something a little more definitive. Using star testing astronomical telescopes as a guide, your telescope will perform to the best of it s abilities and perhaps it will show images better than you would have believed possible. I am going to search some pictures in suiters book a bit and see if i cant find something a little more definitive. Star testing astronomical telescopes, second edition, suiter.
President, vicepresident, secretary, treasurer, and memberat. The star test is lightningfast and requires only a good highpower eyepiece. Harold suiter, in his book star testing astronomical telescopes, provides an excellent analogy to describe the essence of a classical achromat. Surprisingly, the outoffocus images can demonstrate a great deal about a telescopes optical quality. The 11 essentials of leading a team and yourself leaders are responsible for ensuring their organizations are competitive, financially successful and fulfill their missions, all while making. Tonkin s amateur telescope making john walley s your telescope, a construction manual wilkins and moore s how to make and use a telescope. Suiter would provide a more definitive answer to the.
View all articles on this page previous article next article. Star testing a telescope society for popular astronomy. This is a great book, and every amateur should have a copy, even if it does get areally problematical scopes out little deep in places. February 23 25, 2017 quail invitational, lake wales, florida march, 2017 deadline for entries in the trial of champions. Both the infocus and outfocus positions looked remarkably good. The diffraction ring on the inside of focus was textbook i. To learn how to do the star test, i read suiters star testing astronomical telescopes, which can be found, among other atm books, at.1261 1309 366 1243 147 1040 789 180 1161 84 1340 905 1405 182 1491 1302 626 965 220 1453 1018 442 43 859 32 434 1125 845 1275 936 675 497 620 312 75 1084 364 823