![]() ![]() This multi-focal length optical system features all the components like the SZ 90 and SZ 180, and it is fully motorized, with standard parfocusing, microcomputer controlled Maksutov Cassegrain Catadioptric Optical features. Questar Step Zoom 182 – Newest in the family of Questar Step Zooms. With remote operations, the SZ180 pan/tilt and camera features can be packaged for portable operation or permanently installed for day/night operation. It is a high powered portable system used for border surveillance which it provided video evidence of a SCUD missile launcher in Kuwait from a distance of 30 kilometers due to its powerful 8:1 variable focal length lens and longest focal length available in an optic of its size. Questar Step Zoom 180 – Completely motorized with microprocessor control. Questar Step Zoom 90 – The choice of police, intelligence, and military users in more than 30 countries and US Federal and State agencies, Questar surveillance systems "take the danger out of getting close." Completely motorized, this instrument is rugged, multi-focal length, compact, light weight, versatile, remote controlled, and weatherized – optimizes image quality, portability and magnifying power. In the 1990’s, Questar introduced the Step Zoom Series of surveillance equipment described below. Applications: nuclear reactive acquisition, infrared, microchip dissection, etc. An 8:1 variation in field of view and depth of field at a fixed working distance. Two selectable ports allow simultaneous mounting of two detectors or an eyepiece and camera. It is used for fatigue crack detection, laser & electron beam spot alignment, thermal expansion, etc. The Questar LDM has a working range of 55 cm to 1.7 meters (22” to 66”). In the 1980’s, Questar introduced the Long Distance Microscope (LDM) – from 6” (15cm) to infinity. ![]() In 2002, Questar introduced the new Lightweight Titanium 7” and the QMAXTM Solar Spectrometer. First in space, images of the earth taken through a Questar made and continue to make headlines. In the 1960’s, Questar optical systems were introduced for industrial use in many US government projects such as the Gemini space program. Today Questar is known worldwide and has set the highest standard for optical performance. Natural evolution and new technology helped to establish the next generation of instruments: the Questar 7”, Questar Birder and the Questar Field Model. Long regarded as the finest personal telescope in the world, the 3.5” Questar Standard is legendary in its resolution, flatness of field and contrast. In 1950, Questar introduced the first truly portable, lightweight 3.5” astronomical telescope. Questar Corporation is the world’s leading innovator and manufacturer of Maksutov Cassegrain Catadioptric astronomical, birding, surveillance and laboratory optical systems. The Duplex stores in a carrying case that has pockets for the included tabletop legs, extra eyepiece, solar Filter and AC adapter cord.Home > Telescopes > Questar Telescopes Questar Telescopes The RA circle is universal for northern and southern hemispheres. The setting circle for Right Ascension and Declination is fully functional. It includes an AC powered synchronous clock drive motor and declination clamp. The equatorial fork mount is brushed cast aluminum, aircraft polyurethane painted, with friction drive alt-azimuth controls. The barrel rotates for viewing height adjustment. Included also are a star-diagonal prism, solar filter for finder lens, off-axis glass solar filter, and focusable eyepiece diopter. It provides three power changes per eyepiece, an internal finder and two telescopic powers. The control box has two (2) viewing ports with flick knob selection. In addition to the telescope’s legendary resolution, flatness of field and contrast, and has integrated features that are unavailable with other telescopes. The Questar Duplex 3.5 has long been regarded as the finest personal telescope in the world. ![]() Leather carrying case, tripod, power cord and lenses included ![]()
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