Low Magnification at Prime Focus. They are made to provide more than a lifetime of rewarding service, and many Questars from the early 1950's remain in service to this day.

Or for even better convenience, consider our Questar Tristand. The Questar Standard 3-½ telescope stores into a furnished compact Vinyl Clad Carrying Case (easily "carry on luggage") that has pockets sewn in the liner to accommodate the included table-top tripod legs, an extra eyepiece, the solar filter, and AC adapter cord. Provides about 2X magnification when observing through the telescope; not use able with the Finder. Download size is 348,071 bytes (in Acrobat Reader ".pdf" format). In addition to the telescope's legendary resolution, flatness of field and startling clear contrast, the Standard has integrated convenient features several which are not available with other telescopes.

Barlow Control lever - doubles the magnification when rotated into place (clockwise from 10 to 12 o'clock), 3.

but overall, it is a nice phone. The concepts that originated with early production Questar telescopes of 1954 evolved into variants for astronomical uses including the more versatile Duplex 3-½, the larger Seven models, and for terrestrial applications the Field and Birder models. Questar Corporation is the world’s leading innovator and manufacturer of Maksutov Cassegrain Catadioptric astronomical, birding, surveillance and laboratory optical systems. 10514-50: Questar Anniversary Model, with Silvered Quartz Mirror, Magnesium Fluoride AR, 1/10 wave optics and special accessory package. In addition to the telescope’s legendary resolution, flatness of field and contrast, the Standard has integrated features that are unavailable with other telescopes.

Right: Questar Standard telescope shown with Questar Brandon 12mm eyepiece attached (135,285 bytes). Features within the Questar Control Box include a zenith prism diagonal that can be dialed in or out by the selector knob to move the light from either Finder or Telescope View up to the eyepiece. The drive is smooth enough to provide flawless tracking of celestial objects for visual applications, although the telescope can easily be accessorized to introduce one into most types of film or CCD astrophotography.
The Questar Standard telescope incorporates the Questar Control Box which is engineered and refined to provide reliable convenience and safety features. The Standard Questar telescope has won for the United States and Questar numerous design awards, in fact the Questar 3-½ introduced six patented features to the hobby of astronomy. 10 25 2008 08 42 PM 241,664 REGISTRY USER NTUSER S-1-5-20

questar standard. This telescope has been the model of several attempts to mimic its convenience and performance - yet the Questar remains without peer.

The Control Box incorporates a solar filter for finder lens to facilitate finding and centering the Sun in the field of view of the telescope and to prevent the accidental observing of the Sun through an unfiltered Finder. 3.
Questar Brandon Eyepiece in Diopter Adjuster - to focus Finder (with two locking set screws), 2. The Questar Standard 3-½ has for nearly sixty years been regarded as the finest compact personal telescope in the world. The telescope set includes an off-axis glass Solar Filter for the telescope objective (a full aperture filter is an optional upgrade) providing a pleasing orange red Sun with fine details including Sunspots and Faculae. The Dew Shield/Lens Shade with functional Star Chart is visible just ahead of the Control Box. 6204 Ingham Road - New Hope, PA 18938 - USA - Tel. It has been for many aspiring astronomers the "Holy Grail" of compact telescopes; we hear many who visit our showroom to see a Questar first-hand comment mention they grew up reading the advertisements in "Scientific American" and "Sky & Telescope" - hoping some day they'd own their own. Questar telescope manual pdf. High Magnification.

Right: Questar Standard Fork Mount. For current dimensions and a construction overview of the Questar Standard 3-½ telescope sold by Company Seven download the Questar illustrated two page brochure from Company Seven's Library. A cutaway version of a 1965 Questar telescope was displayed and is retained by the Smithsonian Institution Museum of Technology. Left: Questar Control Box (showing from top to bottom): 1. early production Questar telescopes of 1954, "How to Choose a Questar Astronomical Telescope". When you wish to use your Questar 3-½ astronomical telescope in the backyard or at a location with no convenient platform to set up the provided table-top tripod, we recommend you consider a third party good quality rigid field tripod. The Standard and Duplex models include control for engaging the finder's solar filter. This arrangement provides three magnification (power) changes per eyepiece: 2. Close up view of Declination Setting Circle, with knurled Declination/Altitude lock knob (47,717 bytes). Each of both axes has a manual friction drive control, the Right Ascension also having slip clutch permitting manual override of the tracking motor.

To rotate the barrel simply grasp the fork mount with one hand to steady the set, then with the other hand grasp the Control Box to rotate the optical tube. The equatorial Fork Mount of the Questar is made of a brushed cast aluminum which is then lacquer painted.

Observing through the any of the three magnifications can be achieved and changed without the observer ever moving away from the eyepiece! The Tristand is refined, compact telescope equatorial platform and pier which places the Questar 3-½ eyepiece at a comfortable 41" height. Left: Questar Standard telescope shown in Pole Aligned position on it's table top tripod, and at right stored with standard accessories stored in the case (13,309 bytes). Left: Questar Control Box (showing from top to bottom): 1.

Click on image to see enlarged view (232,764 bytes). The Questar Standard. The mount includes an AC powered synchronous clock drive motor (world wide portable 9 volt drive corrector optional), driven Right Ascension setting circle, and a Declination circle with declination motion variable clutch lock. To help place the eyepiece at a more comfortable position for the observer, particularly when tracking in a pole aligned mode, the entire optical tube assembly can be rotated within the fork mount by about 30 degrees clockwise to the right or 30 degrees counterclockwise to the left.

Otherwise, the Control Box is identical to that provided on the Field Model model too. The provided telescope Barlow is approximately 2X, but we have seen a range over the years of from 1.6 to more than 2X. Questar Distribution News Notes & Interesting Articles Overview Pricing Products Service or Repair, Questar Telescopes LD Surveillance Systems LD Microscopes Accessories. A taller Astropier is also available.

Questar Standard, with Zerodur Mirror, Broad-band and Low-reflection coatings.

These features were conceived by the gifted designer, Lawrence Braymer over more than a decade of research and development in what would go into regular production in 1954 as the "Questar" telescope. Finder or Telescope View selector knob (rotate clockwise from 12 to 3 o'clock into "Finder" position or reverse for "Telescope" view), 4. The eyepiece is installed at a right angle to the barrel thereby making the observing of objects overhead more comfortable. Focus Control Knob - jewel smooth, 6. This housing at the rear of the telescope provides two viewing or imaging ports (at top or axial), with control levers and linkages providing quick flick knob selection. Solar Filter for Finder Mirror (knob below and left of Focus knob) dialed clockwise to store Filter. So, for example one could use the 24mm Brandon eyepiece at 4X with the Finder, then select 50X through the telescope, then increase the magnification to 80X or more by dialing in the Barlow*.

Magnification = 1280 divided by focal length of eyepiece.

I bought my SP3 about 4 weeks ago and simply logged in using my Microsoft Account details. The Questar is an American made family of telescopes and accessories offering unprecedented convenience, manufactured to high industrial levels of perfection and durability. In 1950, Questar introduced the first truly portable, lightweight 3.5” astronomical telescope. For more information about how to work your way through the decision making process of choosing and specifying your Questar 3-½" telescope feel free to contact us, or visit our showroom, or refer to the article in our Questar Notes/Library section "How to Choose a Questar Astronomical Telescope". A focusing eyepiece holder (Diopter Adapter) at the top of the Control Box permits the user to set the diopter adjustment to focus of the Finder for most persons. The limit at of rotation is mechanical as the eyepiece holder will be restricted at the length of travel the the stainless steel fin atop either fork tine. 10008: Standard to Duplex Conversion (must return telescope with … The barrel of the telescope is silk screened with a functional Moon Map, while the removable slide on Dew Cap incorporates a functional Star Chart.

Company Seven's testing process measures it exactly, and we provide the information to our customers so that they may make better choices of eyepieces. Click on the image to see an enlarged view (381,873 bytes). exe 2006-09-01 26624 ANNIE-4FJNCOGXG Application Data alot Button 0 Adware. Right: Questar Standard Model 3-½ telescope, left (West) side view showing the integrated Control Box with manual controls for focus, Barlow, and Finder (96,964 bytes). Axial Port - accepts options including Camera Coupling Set or Image Erecting Prism, 5. Questar A Brief History Introduction to Questar Products: Made in the United States Since 1950. enter.

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