AmScope T490 Series Phase-Contrast Simul-Focal Trinocular Compound Microscope with 20W Halogen, Turret Condenser, 3D Mechanical Stage and Digital Camera

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The T490-PCS ads phase-contrast to our hardest-working go-to microscope. A top choice for veterinarians, breeders, and clinics, this instrument has proven reliability and optical q uality. It boasts features such as a compensation-free Siedentopf head, smooth stage translation, and a precision focus system with easy tension-adjustment and vertical-lock. The simul-focal trinocular head provides a dedicated photo port which can be used simultaneously with both eyepieces. Upgraded with a phase-contrast system, new contrast-enhancement techniques are available for studying internal cellular structures and composite materials. A 5-position turret condenser provides easy access to brightfield and multiple phase-contrast settings with the turn of a dial. To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the both ocular tubes to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The 23mm photo port is height-adjustable to match focus with the eyepieces, and can be replaced with an optional CX series C-mount port which have built-in reduction, and can directly interface with C-mount cameras. The objective turret provides instant access to 4 magnification levels to easily focus in on minute details from 40X to 1000X. This covers magnifications needed for studying hair follicles, cells, and bacteria. These high-quality lenses are achromatically corrected to improve resolution and color accuracy. The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. Halogen sub-stage lighting provides bright illumination with excellent color rendering. The warm lighting is better suited for prolonged use, causing less eyestrain than LED and fluorescent lighting. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field. The condenser holder uses rack-and-pinion movement for precise height adjustment. A phase-contrast kit is included with a 5-position turret condenser and 4 plan-achromatic phase-contrast objective lenses. Phase contrast is used to reveal detail in indistinct objects, such as unstained cells and microorganisms that would otherwise appear invisible. By using a combination of specialized objective lenses and a modified light condenser, these invisible objects can be visualized by manipulating variations in phase. This turret condenser allows you to easily rotate through the brightfield and four phase-contrast settings (10X, 20X, 40X, 100X). Each phase-contrast setting has a centerable annulus for proper alignment. Each of the phase-ring equipped objective lenses has plan-achromatic corrections for improved color and resolution, as well as edge-to-edge sharpness. Specifications Optical System Finite-conjugate Mechanical Tube Length 160mm Head Trinocular, 30° incline, 360° rotatable Interpupillary Adjustment Siedentopf compensation-free gemel Ocular Diameter 23mm Eyepieces 10X Photo Port height-adjustable 23mm tube, CX series, simul-focal Objective Lenses DIN standard Objective Parfocal Distance 45mm Objective Mounting Thread RMS 20.32mm Objective Turret quadruple Focusing System Coaxial coarse and fine focus, upper limit-stop, tension control Focus Range 30mm Division of Fine Focus 0.002mm Stage Design Double-layer with caliper Stage Dimensions 140mm x 140mm X-Y Translation Range 75mm x 45mm Transmitted Illumination 20W halogen Condenser NA1.25 Abbe condenser with iris diaphragm, 32mm filter holderNA1.25 5-position phase-contrast turret (BF, 10X, 20X, 40X, 100X) Sub-stage Condenser-holder rack and pinion Power 110VAC 60Hz Objective Lenses Magnification Corrections NA Immersion Medium Cover-glass Thickness 4X achromatic 0.10 — 0.17mm 10X achromatic 0.25 — 0.17mm 40X achromatic 0.65 — 0.17mm 100X achromatic 1.25 oil 0.17mm 10X Plan-achromaticPhase contrast 0.25 — 0.17mm 20X Plan-achromaticPhase contrast 0.40 — 0.17mm 40X Plan-achromaticPhase contrast 0.65 — 0.17mm 100X Plan-achromaticPhase contrast 1.25 oil 0.17mm Packing List:One trinocular head One microscope body One photo port Four objective lenses: 4X, 10X, 40X, 100X One pair 10X eyepieces One phase contrast kit: -- Four objective lenses -- One turret condenser -- One centering eyepiece -- One green filter -- One screwdriver -- One aluminum case One power cord (US and Canada standard) One dust cover Three color filters (blue, green, yellow) One spare halogen bulb One spare fuse One sample bottle of immersion oil Show more