{"product_id":"microscopio-polarizador-magus-pol-850","title":"MAGUS Pol 850 polarizing microscope","description":"\u003cp\u003e\u003cstrong\u003eMagus Pol 850 Polarizing Microscope\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e50–600x magnification. Trinocular head, plan achromatic objectives. Transmitted and reflected light, light sources: 30W halogen bulbs, Köhler illumination with reflected and transmitted light. Bertrand lens and compensators\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe microscope is designed for studying objects in natural and polarized light.\u003c\/p\u003e\u003cp\u003eWith transmitted light, you can study geological samples as well as anisotropic biological and polymer samples in thin sections.\u003c\/p\u003e\u003cp\u003eWith reflected light, you can examine polished sections with one side polished. The thickness of polished sections is arbitrary, typically 5–10mm. The microscope allows you to examine opaque objects up to 15mm thick.\u003c\/p\u003e\u003cp\u003eA polarizing microscope uses the birefringence of an anisotropic sample to generate an image. When polarized light passes through an anisotropic sample, it splits into two beams and changes the polarization plane. The analyzer brings the vibrations of the beams to the same plane and axis, thus causing destructive and constructive interference between the two wave fronts. The bright, high-contrast image changes color when the stage rotates.\u003c\/p\u003e\u003cp\u003eThis microscope has strain-free objectives. The intermediate tube contains the analyzer and Bertrand lens and has a slot for installing compensators. This microscope is used in crystallography, petrography, mineralogy, forensics, and other fields of science.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMicroscope head\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTrinocular head with infinity-corrected plan achromatic objectives. Digital imaging devices are installed in the trinocular tube. The eyepiece\/camera light path selection knob allows you to direct the light beam to the digital camera or to the eyepiece tubes.\u003c\/p\u003e\u003cp\u003eThe diopter adjustment control is located on the left tube.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRevolving nosepiece\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFive objectives. The nosepiece has a free position for centering the light source. An additional objective can also be installed in a free position on the nosepiece to increase the magnification power. The design of the revolving nosepiece leaves free space above the stage as it is located below it, and therefore, the user can see the objective that is inserted into the optical path. The positions of the revolving nosepiece are centered to align the optical axis of the objective and the microscope.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eObjectives\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eInfinity-corrected plan achromatic objectives are specifically designed for observations with polarized light: The strain-free optics ensure that the birefringence comes from the observed sample and not from the optical elements. The objectives are designed for studying samples without coverslips.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFocusing mechanism\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCoaxial coarse and fine focusing knobs are located on both sides at the bottom of the microscope body. The user can rest their hands on the table while using the microscope, which allows for relaxed work. Focusing adjustment is smooth and effortless.\u003c\/p\u003e\u003cp\u003eThe design of the focusing mechanism allows for quick adjustment of the microscope after changing the sample under study. For this purpose, a coarse focus lock knob is located on the right side. The tension of the coarse focus can be adjusted by rotating the ring on the left side.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eStage\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe stage can rotate 360° to view the color change of the sample when the polarizer and analyzer are arranged perpendicularly to each other. The stage has a rotation angle scale. With the Vernier scale, measurements are made with an accuracy of 0.1°.\u003c\/p\u003e\u003cp\u003eThe stage can be centered with two screws because the analysis of an anisotropic object with polarized light requires precise alignment of the stage's rotation axis with the microscope's optical axis.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLight source\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e30W halogen bulbs are used in both reflected and transmitted light illuminators. Halogen bulbs emit light with a color temperature that allows for comfortable work. The 30W bulb is bright enough to make observations with objectives from 4x to 100x magnification used for polarized and brightfield light microscopy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eReflected light illumination\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe illumination system allows setting up the Köhler illumination method. The field and aperture diaphragms are factory pre-centered and do not require additional centering. If necessary, the diaphragms can be adjusted with centering screws. The light source is centered along three axes. The removable analyzer and polarizer are used for the polarized light microscopy technique. The polarizer rotates from 0 to 360°, the analyzer rotates 360°, and the analyzer's Vernier scale provides accurate angle measurement.\u003c\/p\u003e\u003cp\u003eThe set of filters included in the kit allows for color reproduction adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTransmitted light illumination\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eKöhler illumination: adjustable field diaphragm; centered and height-adjustable Abbe condenser with adjustable aperture diaphragm and rotating auxiliary lens. NA = 1.25. The polarizer can rotate from 0 to 360°, with rotation angles of 0°, 90°, 180°, and 270° marked on the scale. The analyzer rotates 360°, the analyzer's Vernier scale provides accurate angle measurement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKöhler illumination with reflected and transmitted light\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eKöhler illumination improves the image quality obtained from a sample. With such illumination, you can achieve maximum resolution for each objective lens and uniform illumination of the field of view, without dark areas at the edges. The examined sample will be in sharp focus, and the image will be free of artifacts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eStudying samples with polarized light\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe intermediate tube contains the analyzer and Bertrand lens and has a slot for installing compensators. The analyzer is inserted into the light path to observe objects with polarized light. When the polarizer and analyzer rotate, the angle of polarization changes. You can place the two filters perpendicularly to each other by setting both to the “0” position. When the microscope body is rotated, depending on the polarization angle, the surface of the sample reflects light differently. The Bertrand lens is used for conoscopic studies. Compensators are designed to improve the contrast of samples that have weak birefringence.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAccessories\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThere is a range of accessories designed for this microscope.\u003c\/p\u003e\u003cp\u003eAdditional objectives can be used to study samples up to 0.32 µm.\u003c\/p\u003e\u003cp\u003eAdditional eyepieces can be used to extend the magnification range of the microscope. These additional eyepieces will help you get the most out of the objective lens you use most frequently.\u003c\/p\u003e\u003cp\u003eOther accessories include a digital camera for sending the image obtained by the microscope to a monitor and storing files, and which has software for real-time sample measurements. You can use a calibration slide to measure observed samples and use it in combination with an eyepiece provided with a measuring scale or with the camera software.\u003c\/p\u003e","brand":"MAGUS","offers":[{"title":"Default Title","offer_id":52888771952983,"sku":"82912","price":3305.74,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/6198\/6860\/files\/82912_magus-pol-850-microscope_00.jpg?v=1772207509","url":"https:\/\/astrotelescopios.com\/en-efta\/products\/microscopio-polarizador-magus-pol-850","provider":"Astro Telescopios","version":"1.0","type":"link"}