Solar Filter for Finder Mirror (knob below and left of Focus knob) dialed clockwise to store Filter. Axial Port - accepts options including Camera Coupling Set or Image Erecting Prism, 5. Finder or telescope view selector knob (rotate clockwise from 12 to 3 o'clock into "Finder" position or reverse for telescope view), 4. Barlow Control lever - doubles the magnification when rotated into place (clockwise from 10 to 12 o'clock), 3. Questar Brandon Eyepiece in Diopter Adjuster - to focus Finder (with two locking set screws), 2. Left: Questar Control Box (showing from top to bottom): 1. Click on each image to see enlarged view (each Approx. the OTA shown clear of the saddle and fork mount.Įach image size Approx. tilted to access the OTA restraining bolt, 3. What Makes The Duplex A Duplex Telescope?:Ībove left to right: illustrating the removal of Questar Duplex telescope optical tube assembly from its fork mount. Furthermore, this still offers the owner an extremely portable tracking telescope when the tube is "docked" into the fork mount. In addition we provide a registration position to help insure the proper realignment of the telescope to the fork when it is reinstalled onto the Questar fork mount.įor those whose interests include astronomy, aside from being a complete working telescope, one could dismount the OTA from the folk mount and then employ the detached 3-½" OTA as a piggyback lens, or with its high effective focal length - a photo guide telescope, or the finder for a larger telescope (as on a nearby NASA 36" telescope!). The OTA of the Duplex is furnished with a machined aluminum base threaded to accept the common 1/4"-20 tpi, and 3/8" mounting bolts and so it is a simple matter to attach the OTA onto a variety of tripods, heads, or other fixturing hardware. The Duplex is the most versatile of all the Questar 3-½" telescopes, providing a portable spotting telescope or ultra telephoto lens (for use as the Field Model) without the need to carry the weight and bulk of a fork mount. The result is an instrument of unique flexibility, perfect for the multiple interests of a whole family of users. The shift from one configuration to the other is accomplished by the use of a special fork mount Saddle which adds very little to the weight of the instrument but permits the quick detachment of the Optical Tube from the base of the Fork Mount with a single knurled bolt. Then a good case can be made that the Questar is the telescope for the rest of us" "if Macintosh is the computer for the rest of us, Martin Cohen, founder of Company Seven proclaimed: Right: Questar Duplex with Powerguide I controller, optional Motorized Declination Drive installed on the telescope Fork Mount, on a Questar Tristand (151,558 bytes).Ĭlick image to see enlarged view (332,338 bytes).Īs with most of the other Questar telescopes, the design and engineering features provided in the Questar Duplex made this telescope "user friendly" well before Jobs and Wozniak gave the world the "Macintosh" computer. This provides the Duplex telescope will be even more versatile, a more compact and lightweight alternative to taking a complete fork mounted telescope into the field. (1.4 kg) Optical Tube of the Duplex is attached to the Questar Fork Mount in such a manner to facilitate the easy disjoining of optical tube from the mount. The Duplex resembles the Standard Questar 3-½ however, the 3 lb. The Questar Duplex is an elegant high performance versatile telescope which combines the high technology optics, convenience, and great portability of the Questar Field Model with the fully instrumented features and tracking capabilities of the Questar astronomical Standard 3-½ telescope made since 1954. Questar Telescopes LD Surveillance Systems LD Microscopes Accessories Questar Distribution News Notes & Interesting Articles Overview Pricing Products Service or Repair Company Seven | Questar Duplex Telescope PageĬ-7 Home Page C-7 News Consignment Library Products& Services Product Lines Order Search C7.com
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