QM 1 Long Mount
Long-Distance Microscope
(#30002)
Specification Sheet
The QM 1, for which Questar Corporation received an IR-100 award in 1983, was the first of a new series of long-distance microscopes. It has a working range of 22 to 60 inches, a 30 to 1 variability in field of view, and remarkable depth of field, linearity and chromatic correction which make it an indispensable tool for a wide variety of laboratory and industrial applications. The QM 1 Long Mount includes two selectable ports, a semi-rugged tube design with integrated full length mount for system stability and is compatible with standard eyepieces, 35 mm, and video formats.
| Type: | Maksutov Cassegrain Catadioptric | ||
| Working Range: | 560 mm (22 inches) to 1520 mm (66 inches), subject plane to front element. | ||
| Clear Aperture: | 89 mm (3.5 inches). | ||
| Entrance Pupil: | Primary Mirror 96 mm (3.8 inches). | ||
| Relative Aperture/Numerical Aperture: | Working Distance | Num.Aper. | F/num. |
| 1400 mm (55 inches) | .0288 | 16.8 | |
| 1020 mm (40 inches) | .0385 | 12.9 | |
| 700 mm (27.5 inches) | .0511 | 10 | |
| 560 mm (22 inches) | .0580 | 8.7 | |
| Resolution: | Better than 3 microns at 22 inches | ||
| Magnification: | To 125 times visual, to 12 times at image plane. | ||
| Format: | Diffraction limited field 12 mm, 18 mm nearly diffraction limited. | ||
| Back Focal Distance: | 70 mm (2.75 inches) minimum measured from back plate. | ||
| Optics | Corrector: BK7, Magnesium Fluoride Coated, 89 mm (3.5 inch) diameter. | ||
| Primary Mirror: Pyrex, Aluminum Coated, SiO overcoated, 96 mm (3.8 inch) diameter. | |||
| Secondary Mirror: Aluminum Coated, R1 surface of corrector, 22 mm (.87 inch) diameter. | |||
| Baffling: Helix in central tube, all interior surfaces black anti-reflection coated. | |||
| Mechanical | Barrel: Aluminum Hollow Bar, machined full length, with integrated lens cell and mount, black anodized exterior finish. | ||
| Length (with control box) 30.5 cm (12 inches); Outside diameter 10.8 cm (4.25) inches. Weight 3.7 pounds. | |||
| Rear Closure Plate: | With stainless steel central tube - precision machining and alignment after assembly. | ||
| Focusing Mechanism: | Mirror thimble integral with stainless steel sliding tube. Slides on fixed, stainless steel light baffle tube (centerless ground). | ||
| Control Box: | Cast Aluminum, selectible axial or 90o port. Internally mounted 1.5X Barlow selectable for 90o port, flick knob controlled. | ||
| Knobs: | Aluminum 24S-T4, corrosion-resistant, hand-turned on turret lathe, stainless steel shafts and levers. | ||
| *Specifications subject to change without notice. |
Questar Corporation Phone 215-862-5277 or 800-247-9607
6204 Ingham Road Fax 215-862-0512
New Hope, PA 18938 Email Questar@QuestarCorporation.com
USA Web
www.QuestarCorporation.com