Early units did not serialize Silver upgrade options. $250.00. Forum de discussion des propriétaires de télescopes Questar, Tutorial d'utilisation du Questar rédigé par l'Observatoire de la Drew University (Madison New-Jersey USA), https://fr.wikipedia.org/w/index.php?title=Questar&oldid=169087102, Entreprise ayant son siège en Pennsylvanie, Entreprise de fabrication ayant son siège aux États-Unis, licence Creative Commons attribution, partage dans les mêmes conditions, comment citer les auteurs et mentionner la licence, Donald J. Bandurick, Président Directeur Général. All have some identifier in the sequence which can help to determine which type unit it is. Free shipping on many items | Browse your favorite brands ... Questar Telescope Accessory - Porro Prism. Un modèle 7 pouces, a été développé ultérieurement mais en raison de son prix élevé comparé aux autres télescopes, il n'a jamais atteint la renommée du 3,5 pouces. Showroom hours ( by appointment only), Phone: 603-382-0836 The Questar of the 1950s and early 1960s had a proprietary screw in eyepiece design and offered little capacity to employ third-party accessories. 2001. The Seven was also very expensive for its intended market and has never been a big seller. The main identifier is the number 7. #questarcorp Questar Corporation is a company based in New Hope, Pennsylvania, which manufactures precision optical devices for consumer, industrial, aerospace, and military markets. This Questar Seven Classic Titanium uses the same quartz mirror and coatings combination as the renowned 50th Anniversary 3.5" Questar, perhaps the ultimate small telescope. The ads focused on the telescope's mechanical and optical design, educational value for children, ease of use, and adaptations as a spotting scope and telephoto lens. It includes an AC powered synchronous clock drive motor and declination clamp. The Long Mount will have (AL) at the front of the serial number. The Questar units which use this base numbers are: Field Model, Birder, QM-1 short and long mount, 3.5 Ruggedized all varities, Field Ranger and Field Ranger Light Weight. It is a five digit sequential series of numbers. Un Questar 3.5” standard fait partie des collections du, Des versions du Questar 3.5” ont été utilisées par la. It also included a star chart engraved in white on a blue aluminum sleeve (this doubles as a dewcap), around the barrel which contained a moon map. Other optical configurations are possible and will follow the format shown above. Questar was founded in 1950 by Lawrence Braymer, who set up Questar to develop and market Maksutov telescopes and other optical devices for the consumer, industrial, and government customers. The MFL number system was an add-on system to differentiate between a certain type of tube assembly and a multi-port attachment. Questar Corporation manufactures quality telescopes since 1950! Earlier years with single digit will only give you the year not the decade i.e. The base number was 50 and is now a 4 digit number at approx 6000. See duplex option below. You will need to see shipping papers to determine an actual year. For a while they also offered 12-inch (300 mm)-aperture optical-tube assemblies. This is a telescope that will last a lifetime and future servicing will not be an issue. The RA circle is universal for northern and southern hemispheres. Ending Thursday at 11:13AM PDT 3d 6h. 10213, Zerodur Mirror, Broad Band & Low Reflection Coatings, Mdl. Questar Brandon Dakin Barlow 2X Lense. This variant came with the standard accessories, and a separate case containing the distance microscope barrel assembly. The Questar Seven was sold as a combination Tube and Mount as the Questar 7 Fully Mounted unit. It was a scaled-up Questar 3-1/2" with the integrated Control Box. They are used in astronomy, nature study, radar calibration/boresighting/tracking rocket launches, surveillance, and as long-distance microscopes. Min. There are similar optical and optional variables also imbedded in the sequence see above Standard and Duplex listings. Questar est fondé en 1950 par Lawrence E. Braymer (1901 - 1965). Malgré cela, le Questar a gagné une réputation inégalée et est devenu un must pour qui peut se l'offrir. Field Model Mount) or Long Mount which is similar to a ruggedized mount on 10021 units. ( best to buy two maching set ), Front Lens Cap for Questar 3.5 aluminum with logo 75.00 plus 8.95 shipping, Questar T-shirts In addition to the telescope’s legendary resolution, flatness of field and contrast, the Standard has integrated features that are unavailable with other telescopes. Questar est fondé en 1950 par Lawrence E. Braymer (1901 - 1965). 1/10 wave P-V), Enhanced Aluminum coatings, Specials, Used and Demo Scopes, Mounts, Eyepieces and Binoculars. Products sold by Questar include 3.5” (89 mm) and 7” (178 mm) aperture Maksutov Cassegrain astronomical/terrestrial telescopes for the consumer market. This numbering system has many variations and model types that use the basic serial numbers. The Short mount will have the (F) at the front of the serial number. Questar QM introduced, early close focus microscope series. Inventeur de génie, Braymer crée Questar pour développer et commercialiser des télescopes de Maksutov et d'autres appareils d'optique aussi bien pour le grand public, que pour l'industrie ou le gouvernement américain. Maksutov-Cassegrain telescope, THE QUESTAR, COSMOS - HEBDEN BRIDGE ASTRONOMY SOCIETY, page 7, September 2000, Company Seven | Questar Products Index & Overview Page, Joe Bergeron's Astronomy Equipment Reviews - Questar 3.5", Rod Mollise, "Choosing and Using a New CAT", page 96, https://en.wikipedia.org/w/index.php?title=Questar_Corporation&oldid=972469927, Companies based in Bucks County, Pennsylvania, Manufacturing companies established in 1950, Manufacturing companies based in Pennsylvania, Privately held companies based in Pennsylvania, Creative Commons Attribution-ShareAlike License. The Standard (Deluxe) model was produced in two mirror types, Pyrex and Quartz. The barrel rotates for viewing height adjustment and is silk-screened with a functional Moon Map. Short mount (Std. The 3.5" Standard model, with nonremoveable optical tube and control box, the predominant model. . The threaded legs become standard product for Questar 3.5 base. Récemment, Questar a reconçu son modèle 7 pouces et l'a renommé le " Titanium Light Weight Classic Seven". Les microscopes longue distance, une version modifiée des télescopes Maksutov Cassegrain permettant d'imager des objets à courte distance et utilisées en recherche et dans les procédés de contrôle qualité en fabrication. 0 bids. 10314, Pyrex Mirror, Magnesium Fluoride Coatings, Mdl. Later models accept standard slide-in 1.25" eyepieces and other accessories. We carry all brands and products, like Meade telescopes, Celestron telescopes, and more. [6] A 7-inch (180 mm) model was introduced in 1967 for hobbyists, industry and government. The optics are made by an optical company called Cumberland who apparently also makes optics for the US military. The maintube is changed to the current Wide Field type. For a while they also offered 12-inch (300 mm)-aperture optical-tube assemblies. Questar Standard $5150.00 plus shipping 150.00 and paypal fees, Questar 3-½ Astronomical/Multi-mission Instruments, Leg Hole Plugs: 22.00 each. De nombreux articles ont été publiés sur l'appareil, se focalisant principalement sur sa qualité optique et mécanique, ses valeurs éducationnelles, sa facilité d'utilisation et ses nombreuses adaptations avec des caméras et des téléobjectifs. The setting circle for Right Ascension and Declination is fully functional. All will have the M1 listed in the serial number. This is a modified Questar Field Model with a fixed 10x finder with a rapid-focus knob used for observing birds and other wildlife. The Duplex (Dual Model) is produced #2597. Is this Questar the ultimate mid-sized telescope? Products sold by Questar include 3.5” (89 mm) and 7” (178 mm) aperture Maksutov Cassegrain astronomical/terrestrial telescopes for the consumer market. questar standard. In early years of production the Standard unit was called the Deluxe Model, not to be confused with the Duplex and there were no other units available. Company 7 - A resource for the international amateur and professional astronomical, nature watching, and law enforcement/defense communities. A 3.5" Duplex, optically and mechanically identical to the Standard, but which included a simple way of detaching the telescope from the. 10214, Zerodur Mirror, Broad Band & Low Reflection Coatings, Mdl. The standard Field Ranger with Field Model type mount and the new Light Weight (LW) with special low profile and weight mount. Johnny Carson, scénariste, acteur et animateur de télévision américain, reconnu comme un astronome amateur passionné a acheté un des premiers modèles. this was the last 12 produced and sold by the questar company and is in great condition with very little use. 10114, Pyrex Mirror, Broad Band & Low Reflection Coatings, Mdl. This page was last edited on 12 August 2020, at 07:28. It manufactures precision optical devices for consumer, industrial, aerospace, and military markets. Ce modèle était initialement prévu pour être un télescope de 5", mais Braymer décida qu'un télescope d'une telle taille ne correspondait pas au marché qu'il désirait atteindre car il serait trop lourd et trop onéreux. The Questar 12 inch is produced. The Questar Standard. 1 bid. Parmi les produits commercialisés par Questar, on trouve: Développé tout de suite après la seconde guerre mondiale, le Questar 3.5” a été pendant longtemps le produit phare de la société. Le principe de base est un objectif catadioptrique Maksutov, nommé d'après son inventeur Dmitry Maksutov, avec un réflecteur Cassegrain modifié créant un chemin optique replié compact (Ce type de télescope est aussi appelé "Spot- Maksutov"). The 9 volt built-in Powerguide is introduced with the battery in the telescope base. You will have to see shipping papers for more information or describe the shape. The barrel or tube and mount could be, and now is, purchased separately. Après sa mort, sa femme Peggy puis le Dr. Douglas M. Knight après 1976 ont continué à faire progresser la société. The control box has two (2) viewing ports with flick knob selection. En 2001 Questar Corporation a été reprise par Donald J. Bandurick, Président Directeur Général de la socié… As with all the number systems before, it will include similar optic and accessory functions. Some early units did not have a date entry. Although many advances have been made in the treatment of Pituitary Tumors physically, there have not been many studies on the emotional, psychological effects these tumors cause or the end result…. The serial number does not tell you which type tube: 10019,10020,10021 or other. astronomyshoppe, Pyrex Mirror, Magnesium Fluoride Coatings, Mdl. En 2001 Questar Corporation a été reprise par Donald J. Bandurick, Président Directeur Général de la société "National Engineering and Manufacturing". Le but recherché par Braymer pour ce télescope a été sa portabilité, sa compacité et sa facilité d'utilisation. A 3.5" convertible model that came with two barrels: the standard one, and a separate longer barrel, which could be screwed onto the duplex fork mount in place of the standard one, and used as a distance microscope.
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