MAGUS Bio 260T

MAGUS Bio 260T Biological Microscope
Magnification: 40–1000x. Trinocular microscope head, coded revolving nosepiece, plan achromatic objectives, 3W LED illuminator, intelligent lighting control system

The microscope is suitable for observing transparent and translucent biological samples, such as smears and cross sections using the brightfield microscopy technique in transmitted light. The installation of additional accessories will allow for darkfield, phase-contrast, fluorescence, and polarization methods.
The coded revolving nosepiece maintains a comfortable brightness level when switching objectives. Intelligent control of microscope lighting increases the comfort and speed of the researcher’s routine work. “Smart” functions help students more easily enter the profession and gain the necessary professional experience.
The microscope is suitable for lab work, research, and teaching.
Key features
References and downloads


Microscope head
Trinocular head with infinity-corrected optics. Eyepiece tubes rotate 360°. The user can adjust the eye relief on the eyepiece to fit their height. The digital camera is mounted in the trinocular tube. The beam splitting is 50/50.
The base kit includes 10x/22mm eyepieces with diopter adjustment and a long eye relief for working with glasses. Flat rubber eyecups protect the optics from scratches.

Revolving nosepiece and objectives
The coded revolving nosepiece for 5 objectives is oriented toward the interior: The user can see the objective inserted into the optical path, and the space above the stage is free. An additional objective can also be installed in the free slot in order to achieve extra magnification. The parfocal distance is 60mm.
Above the revolver, there is a slot with a plug for installing the analyzer.

Maintaining comfortable brightness levels when switching magnifications
The objectives of different magnifications transmit light with different levels of intensity, and so each time you change objectives, the brightness of the light must be adjusted. In addition, brightness sharply increases when switching from a higher magnification objective to a lower magnification one. A sharp increase in brightness causes eye fatigue. MAGUS Bio 260T is equipped with intelligent brightness control. The microscope remembers the brightness for each objective that the user has selected and automatically sets this brightness when turning the nosepiece. Intelligent control reduces the time required to adjust brightness. MAGUS Bio 260T increases user comfort and saves time even when work requires frequent magnification changes.

Focusing mechanism
Coaxial coarse and fine focusing knobs.
The coarse focusing knob is located on the left side. Fine focusing knobs are located on both sides; the right knob has recesses for fingers.
The coarse focus lock knob helps you quickly adjust the microscope after changing the subject of study. The knob is located on the left side of the microscope on the same axis as the focusing mechanism.
The ring on the right side adjusts the tension of the coarse focusing travel. The user adjusts the comfortable tension for work.

To ensure the ergonomic operation of the stage, it does not have an X-axis positioning rack. The belt-driven mechanism allows for the smooth movement of the specimen. The specimen holder is secured with two screws and can be easily removed during manual scanning.
The long stage control handle ensures user comfort while working: The hand rests on the table without strain.

The condenser is height-adjustable and can be centered. Mounting type: dovetail.
The condenser ring adjusts the iris aperture diaphragm. The condenser body has a marking for the magnification of the objectives, and the ring has an indicator marker. To achieve contrast on each objective, it is recommended to rotate the ring so that the index marker matches the magnification marking of the objective being used.
The condenser has a slot with a plug for a darkfield slider or a phase contrast slider. The installation of a slider saves time when changing the observation method.

The transmitted light illuminator has a 3W LED. The color temperature does not change when adjusting the brightness. The LED has a lifespan of 50,000 hours.

Köhler illumination in transmitted light
The Köhler illumination improves the image quality of the observed sample: Each objective achieves maximum resolution and the field of view is illuminated evenly without darkening at the edges. The object of study is in sharp focus and the image artifacts are removed.

LCD status screen
The LCD screen on the base of the microscope displays the objective magnification, brightness, and color temperature of the light source as well as the operating mode (“sleep” and “eco”).
Using the screen and two knobs, the microscope user adjusts the brightness, locks the brightness adjustment, and sets the sleep mode and auto-off timer.

Ergonomic design
Physical discomfort causes fatigue and reduces productivity. The ergonomic design of the microscope plays an important role in everyday scientific research.
MAGUS Bio 260T provides user comfort during work.
By rotating the microscope head, the user selects a point of view height so as not to strain their back and neck.
Focusing knobs are located at the bottom of the body. The user does not strain their hands. Thanks to the smooth movement of the mechanism, the user can effortlessly focus on the object.
The microscope is operated with minimal hand movement, since the long stage control handle and fine focusing knob are located in the same working area.
The microscope is equipped with a special carrying handle.
The design for the hidden placement of the power cord improves the workplace esthetic and safety of carrying the microscope as well as simplifies storage of the device.

There is a line of accessories designed for this microscope.
Optional objectives provide additional magnification.
The eyepieces extend the magnification range of the microscope. Optional eyepieces help you maximize the potential of the objective that you use most often.
The phase contrast device, darkfield condenser, and polarization device offer more contrast techniques so you can study the specimens that are invisible in brightfield.
A digital camera outputs the microscope image to a monitor, store files, and software takes real-time measurements of specimens.
A calibration slide is used to measure objects and can be combined with the eyepiece with a scale or with the camera software.

Key features

  • Observations of transparent and translucent samples in brightfield in transmitted light
  • The trinocular head with a vertical tube for installing a digital camera and height adjustment to adjust to the observer; light beam splitting 50/50
  • Coded revolving nosepiece: The brightness of the light source is set automatically depending on the selected objective
  • Transmitted light illuminator is energy-saving 3W LED with a lifetime of up to 50,000 hours
  • Transmitted Köhler illumination, centered and height-adjustable condenser with objective magnification markings
  • Smart lighting control system: automatic brightness selection, dimming lock, timer auto-off, LCD operating status screen
  • Stage without an X-axis positioning rack and with a long control handle for convenient operation
  • Ergonomic stand with a carrying handle and the hidden placement of the power cord
  • Wide range of compatible optional accessories


  • Stand with built-in power supply, transmitted light source, focusing mechanism, stage, condenser mount, and revolving nosepiece
  • Abbe condenser
  • Trinocular head
  • Plan achromatic infinity-corrected objective: 4x/0.10, parfocal height 60mm
  • Plan achromatic infinity-corrected objective: 10x/0.25, parfocal height 60mm
  • Plan achromatic infinity-corrected objective: 40x/0.65 (spring-loaded), parfocal height 60mm
  • Plan achromatic infinity-corrected objective: 100x/0.25 oil (spring-loaded), parfocal height 60mm
  • Eyepiece 10x/22 mm with long eye relief and diopter adjustment (2 pcs.)
  • Eyepiece eyecup (2 pcs.)
  • Light filter
  • C-mount camera adapter
  • AC power cord
  • Dust cover
  • User manual and warranty card

Available on request:
  • 10x/22mm eyepiece with a scale
  • 10x/22mm eyepiece with reticle
  • 10x/22mm eyepiece with crosshairs
  • 12.5x/17.5mm eyepiece (2 pcs.)
  • 15x/16mm eyepiece (2 pcs.)
  • 20x/12mm eyepiece (2 pcs.)
  • Plan achromatic infinity-corrected objective: 20x/0.40, parfocal height 60mm
  • Phase contrast device: set of phase sliders, auxiliary centering telescope, set of phase objectives
  • Darkfield slider
  • Reflected light illuminator
  • Polarization device
  • Digital camera
  • Calibration slide
  • Monitor


Microscope design: upright

Image field: flat-field

Transmitted light microscopy techniques: brightfield; darkfield (optional); fluorescence (optional); polarized light (optional); phase contrast (optional)

Microscope magnification, x: 40–1000 basic configuration (*optional: 40–1250/1500/2000)

Tube length: infinity (∞)

Microscope head type: trinocular

Beam splitting, eyepieces/trinocular tube: fixed, 50/50

Microscope head: Gemel head (Siedentopf, 360° rotation)

Inclination: 30°

Microscope head magnification, x: 1

Interpupillary distance, mm: 47–78

Eyepiece diameter, mm: 30

Eyepieces, x/field, mm: 10x/22 with ±5D diopter adjustment, long eye relief (*optional: 10x/22 with scale, 10x/22 with reticle, 10x/22 with crosshair, 12.5x/17.5, 15x/16, 20x/12)

Revolving nosepiece: 5 objectives, coded

Optical design: infinity plan achromatic objectives (∞), parfocal distance: 60mm

Objectives, x/aperture/working range, mm: 4x/0.10/30; 10x/0.25/10.2; 40x/0.65/1.5; 100x/1.25 oil/0.2 (*optional: 20x/0.40)

Spring-loaded retractable assembly: 40x, 100x

Stage: 230×150mm, two-axis mechanical stage, without a positioning rack

Moving range, mm: 78/54

Condenser: center- and height-adjustable Abbe condenser NA 1.25 with adjustable aperture diaphragm and slot with plug for darkfield and phase contrast sliders; dovetail mount

Diaphragm: adjustable iris diaphragm

Focusing mechanism: coaxial coarse and fine focusing knobs; the coarse focusing knob is located on the left side; fine focusing knobs are located on both sides

Coarse focusing travel, mm: 30

Coarse focusing travel, mm/circle: 37.7

Fine focusing travel, mm/circle: 0.2

Fine focusing scale value, μm: 2

Coarse focusing tension adjusting knob: +

Coarse focusing lock knob: +

Illumination: transmitted light

Transmitted light source: 3W LED

Intelligent lighting control system: automatic brightness adjustment when switching objectives, status display on LCD screen, sleep mode, eco mode

Phase contrast device: *optional: phase contrast slider 10x–40x; phase contrast slider 100x; phase contrast objective (10x, 20x, 40x, 100x); auxiliary centering telescope

Darkfield condenser: *optional: darkfield slider

Device for working in fluorescence method: *optional: reflected light illuminator

Polarization device: *optional: polarizer placed on the collector; analyzer inserted in the slot above the revolving nosepiece

Power supply, V/Hz: AC power supply, 100–240/50/60

Operating temperature range, °C (°F): 0… 70 (32… 158)

Operating humidity range, %: 0… 80 (at temperatures up to 31°C/88°F)