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Boeken - Posters

Boeken - Posters

 
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Orion - Planetary & Lunar Explorer Accessory Kit


  • An affordable and thorough collection of telescope accessories to improve your planetary and lunar views
  • Included Orion Color Filter Set enhances landscape details and cloudy features on the bright visible planet
  • Included Orion 7.5mm Sirius Plossl telescope eyepiece provides a crisp high magnification view, with pleasing 52-deg apparent field-of-view
  • Included Orion Shorty 2x Barlow Lens adds versatility by doubling the magnification of each eyepiece in your collection - makes the included 7.5mm eyepiece provide the magnification of a 3.7mm eyepiece
  • The included Orion Beginning Stargazer's Toolkit provides four popular astronomy tools: Orion StarTarget planisphere, Orion MoonMap 260, Orion Telescope Observer's Guide book, and an Orion RedBeam Mini keychain flashlight

130,00 EUR

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Orion - Beginning Stargazer's Toolkit, 40-60 degree


  • Handy kit of astronomy accessories contains four essential items to help beginning stargazers find their way around the heavens
  • The Orion Star Target Planisphere shows you the locations of constellations and deep-sky objects for any night of the year - just dial in the date.
  • Designed for use in 30-deg-50-deg latitudes.
  • The included Orion Telescope Observer's Guide book is a wonderfully written guide to help beginning astronomers locate and observe over 60 interesting objects!
  • The Orion MoonMap 260 identifies over 260 craters and other lunar featuresThe Orion RedBeam Mini LED Astro Flashlight emits red light that won't spoil your night vision so you can use the toolkit at night

49,00 EUR

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Kijk Omhoog! - Frank Deboosere en Philippe Mollet


Het beste Nederlandstalige boek in jaren voor de actieve amateurastronoom!

  • 238 pagina's en overzichtelijke indeling
  • Rijk geďllustreerd met duidelijke foto's en afbeeldingen (o.m. een foto van onze zaak ;-))
  • Talloze tips en ideetjes voor actieve beleving van de astro-hobby

Een absolute topper die wij met plezier aanraden!


22,95 EUR

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Orion - Binocular Astronomy Field Guide


  • This complete observing guide is the perfect companion for any astronomy binocular
  • 16-page guide packed with gorgeous illustrations, correct-image maps of the Moon, Milky Way, constellations, and close-up maps of specific lunar regions
  • Designed for year-round use with seasonal star maps for both Northern and Southern hemispheres
  • Convenient field-of-view images of the most popular deep-space targets make it easy to hunt down elusive objects in the night sky
  • Printed on durable, water-resistant synthetic paper. Measures 26.8" x 19.3" (68cm x 49cm) and folds up to 6.7" x 9.6" (17cm x 24.5cm)


14,00 EUR

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Orion - Telescope Observing Guide


  • This detailed Observer's Guide highlights over 60 celestial objects to observe in a small telescope
  • Packed with helpful hints and tips for exploring star clusters, multiple stars, nebulas, and even the Andromeda Galaxy
  • Useful resources for each object include a map, finder scope view, depiction of what you can expect to see in your telescope eyepiece, and more
  • A thorough guide to the night sky for stargazers of all skill levels from beginners to more experienced amateur astronomers
  • Softbound, 174 pages



19,00 EUR

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Orion - DeepMap 600 Folding Star Chart


  • Full-color star chart with the 644 finest celestial objects Covers the sky from Declination latitudes +70° in the Northern Hemisphere to -60° of the Southern Hemisphere.
  • All are plotted on a giant 33" x 21" full-color star chart by world-renowned star-mapper Wil Tirion
  • Easily folds up like a road map into a compact form
  • Color-coded symbols make it easy to comprehend
  • 537 deep space objects: galaxies, nebulae, star clusters, and all 109 Messier Catalog objects.
  • 85 of the most interesting double and multiple stars and 22 variable stars
  • Printed on dew-proof plastic for durability.


24,00 EUR

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Orion - Star Target Planisphere - North Europe


  • An extremely easy to use accessory that helps you learn the location of constellations, bright stars, and many deep-sky objects such as nebulas, galaxies, and star clusters
  • Simply dial in the date and time across the top, and StarTarget shows you the sky overhead
  • A perfect accessory and great learning tool for use with your telescope, binocular, or even unaided eyes
  • Designed for use within 40° North and 60° North latitudes regardless of calendar year - shows locations of 100 star clusters, nebulas and galaxies for viewing with binoculars or telescope
  • Made of coated, dew-resistant cardboard with a clear plastic window



14,00 EUR

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Rob Walrecht - Planisfeer


Planisfeer voor 52° NB , zeer nauwkeurig voor elk gebied tussen 47° en 57° NB.

  • Planisfeer voor België en Nederland
  • Extra grote diameter van 25cm. met Nederlandstalig gebruiksaanwijzing
  • Gemaakt van hoge kwaliteit sulfaatkarton, voorzien van een laklaag, met een bovenschijf van transparant pvc.
  • Naast alle noordelijke en circumpolaire sterrenbeelden bevat deze planisfeer ook talrijke verrekijker-objecten’: sterrenstelsels, dubbelsterren, veranderlijke sterren, nevels enz. 


14,00 EUR

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Rob Walrecht - Planisfeer voor ervaren waarnemers


Planisfeer voor 52° NB , zeer nauwkeurig voor elk gebied tussen 47° en 57° NB.

  • Ronde planisfeer, 25 cm in diameter, met een Nederlandstalig gebruiksaanwijzing en enkele interessante tips op de achterzijde
  • Deze planisfeer is rond en in 'omgekeerde kleuren', ofwel met blauwe sterren en objecten op een witte achtergrond. 
  • Nieuw zijn de radianten van de belangrijkste meteorenzwermen.

14,00 EUR

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Rob Walrecht - Vakantie Planisfeer Zuid-Europa


Vakantie planisfeer voor 40° NB , zeer nauwkeurig voor elk gebied tussen 35° en 45° NB.

  • Ronde planisfeer, 25 cm in diameter, met een gebruiksaanwijzing en enkele interessante tips op de achterzijde.
  • Voor gebruik in: Centrale VS, Zuid-Europa, Noord-Japan, Korea, Centraal-China.

14,00 EUR

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Moon Map


  • The meticulously detailed MoonMap 260 is a must-have for any backyard astronomer
  • Map identifies over 260 lunar features including craters, valleys, ancient lava flows, mountain ranges, all successful US and Soviet lunar mission landing sites, and more
  • Conveniently laminated for protection against dew, dirt, and the elements
  • Measures 25.25" x 11" when fully unfolded, and folds up to 8.5" x 11" for easy portability
  • Includes both correct-image and reversed "mirror image" maps of the Moon for easy use with binoculars, unaided eyes, or any telescope

13,50 EUR

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Orion Mars Map & Observation Guide


  • An indispensable reference guide for observing the "Red Planet"
  • Identifies Martian features using classical albedo and modern nomenclature
  • Lists all opposition and conjunction events from 2014 to 2020
  • Recommends best filters for visual observation and astrophotography of Mars
  • Plastic-laminated for durability, the Mars Map measures 25.25" x 11" when fully unfolded, and folds up to 8.5" x 11" for easy portability

13,50 EUR

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Orion - Jupiter Map & Observation Guide


  • Beautifully detailed map of the largest planet in our solar system
  • Loaded with useful observing tips to help optimize your views of Jupiter Includes lists of all Jupiter oppositions, observable conjunctions from 2014 to 2020
  • Features an illustrated selection of rare Jovian moon events from 2014 to 2020
  • Plastic-laminated for durability, the Jupiter Map measures 25.25" x 11" when fully unfolded, and folds up to 8.5" x 11" for easy portability

13,50 EUR

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Orion Saturn Map & Observation Guide


  • An ideal reference for observing ringed Saturn and its brightest moons
  • Identifies atmospheric features of Saturn using standard nomenclature
  • Includes lists of all Saturn oppositions, observable conjunctions from 2014 to 2020
  • Lists best filters for visual observation and astrophotography of Saturn
  • Plastic-laminated for durability, the Saturn Map measures 25.25" x 11" when fully unfolded, and folds up to 8.5" x 11" for easy portability


13,50 EUR

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Orion - Planetary Observing Guide Kit


  • Three vital guides to the most popular planets to observe in telescopes and astronomy binoculars
  • Use the included Mars Map and Observing Guide to learn all about the red planet and how to obtain the best views
  • Learn helpful tips and facts about the largest planet in our solar system with the included Jupiter Map and Observing Guide
  • Explore the ringed planet like never before with the included Saturn Map and Observing Guide
  • Plastic-laminated for durability, each included Map and Observing Guide measures 25.25" x 11" when fully unfolded, and folds up to 8.5" x 11" for easy portability


31,00 EUR

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A.A. Shimbalev "See it all!" reference book


  • Alexander Shimbalev heeft een heel nuttig handboek voor de beginnende astronoom geschreven. Het bevat informatie over talloze aspecten uit de astronomie. Het is een eenvoudig leesbaar boek, zonder al te veel technische gegevens, waarin alles wordt uitgelegd wat u moet weten over de telescoop en het heelal in het algemeen.
  • De hoofdstukken zijn logisch ingedeeld en dankzij de kleurrijke illustraties (sterrenkaarten en foto's van sterrenbeelden, sterrenstelsels, nevels, planeten, etc.) is dit boek ook zeer geschikt voor kinderen. (Tekst in het Engels.)

8,00 EUR

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Richard Berry - Discover the Stars


  • Helpful astronomy reference and resource book helps lead you on a tour of the constellations, pointing out fascinating deep-sky objects that can be seen with entry-level telescopes or binoculars
  • Features 12 big star maps that show the entire visible sky each month, accompanied by text that points out each month's sky attractions and constellation mythology
  • Also includes 23 star map charts of smaller regions of the sky, which highlight stars with unusual colors, star clusters, nebulas, and galaxies observable with small instruments
  • Separate chapters cover basics such as how the stars appear to move through the sky, points of interest on the Moon's face, and tips for choosing and using a telescope
  • Softbound, 119 pages

16,00 EUR

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Orion - Solar System, Moon, and Meteors Poster Kit


  • Three gorgeous, full-color, Orion-designed posters perfect for decorating and educating!
  • Solar System Poster measures 30"x 20" and features stunning pictures of the Sun and planets in our solar system
  • Observing the Moon Poster measures 30" x 20" and is packed with vital information for lunar explorations with telescopes and binoculars
  • Meteor Showers Poster measures 20"x 30" and includes helpful information and tips for observing meteors
  • All three posters are folded into a convenient 7.5" x 10" size and shipped in a protective plastic sleeve

19,00 EUR

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Space Posterset


  • Set van 3 mooie posters gedrukt op mooi gecoat glanspapier: The Moon, The Solar System, The Sun and Other Stars.
    Formaat poster: A1 (84 x 60 cm).
    Materiaal: glanzend, gecoat papier.
  • De posters zien er schitterend uit, zowel op de muur van de tienerkamer als in de schoolklas.
     

14,90 EUR

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The 20-cm Schmidt-Cassegrain Telescope


  • A guide to the use of the most popular telescope in the world, the 20-cm (8-in) Schmidt-Cassegrain Telescope. 
  • All aspects of using the telescope in easy stages. It starts with techniques for viewing the Moon, then takes the observer through our planetary system and on to the deep sky, where nebulae and galaxies are treated extensively.
  • There are interesting projects to try, such as observing the nearest star and chasing eclipses.
  • A full range of telescope accessories and detectors is described, together with advice on their use, and suggestions for projects. The 40-page appendix is packed with hard-to-find practical information, arranged in ten separate sections.

32,00 EUR

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Optical Testing


  • Optical Testing — A Practical Introduction for Scientists, Engineers, Optical Designers, Students and Optical Workshop Personnel
  • Written for those working in optics with a practical introduction to optical testing methodologies, instrumentation, and procedures, and assist in the development of their professional careers.
  • No optical component or system should be built without a prior specification which defines base parameters, tolerances, and system performance.
  • Optical testing is done to verify whether the specification and performance criteria have been met

60,00 EUR

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Telescope Optics - Rutten & van Venrooij


  • Many readers will find the analyses of existing designs the most valuable part of the book. Newtonians, Cassegrains, Maksutovs, Schmidt cameras and more are described and analyzed so that you can easily compare them. What's your dream telescope? This book will help you choose it.

    Telescope Optics provides a comprehensive analysis of practically any type of telescope an amateur would use for visual observation or photography. Coverage of the many types of catadioptric systems is outstanding. Taken in total, it is an optical design book, but written in such a way that amateur astronomers will find it of value whatever their level of interest, and the person seriously interested in design will find it a godsend. I recommend it highly for any serious amateur and for the professional who is going to work in these areas.
                                                                                                              Sky & Telescope Magazine

60,00 EUR

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OPTIEK VAN GROOTVEN B.V.B.A.
Opticien-Optometrist 
Kapellestraat 24
2630 Aartselaar - 03 887 73 93 of  0471 68 41 83
info@grootven.be
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