Firefly GT800 Handheld USB Digital Microscope with Measurement Functions Review

Firefly GT800 Handheld USB Digital Microscope with Measurement Functions

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  • Sensor Resolution: 2.0M pixels. Still Image Resolution: 1600×1200 pixels (Format: BMP). Video Resolution: 1600×1200 pixels (Formats: YUY2, AVI, Frame Rate: 30FPS at 640×480 pixels).
  • Magnification: 15x – 230x (Native Optical), 15x – 700x (Digital). Lens Assembly: Dual Lenses, 3-Layer Glass, 650nm cutoff.
  • Lighting: 8 Ultra-Bright LEDs with fully adjustable brightness. Interface: USB2.0 (USB Cable Length: 180cm). Built-in snapshot button. Rugged industrialized construction.
  • Software: Scalable Window, Zoom, Freeze, Resolution, Rotate, Flip Region of Interest (ROI), Real time measurements, Automatic/Manual white balance.
  • Safety Compliance: FCC, CE and RoHS compliant. Manufacturer’s Warranty: 1 year.

Firefly GT800 is one of the industry’s most advanced high precision handheld digital microscopes, providing up to 230x native optical magnification and up to 700x digital magnification. Equipped with multi-layer glass lenses rather than plastic alternatives, this microscope delivers superb focal depth and crystal clear image quality. GT800 is controlled directly with the FireflyPro professional image processing software which is bundled with the microscope. This state-of-the-art software allows users to capture, store, recall, view, manipulate, and measure images and videos in real time. It is easy to take snapshot by hardware button or by software control. GT800 is ideal for a variety of applications including textile inspection, detailed repair, printing inspection, computer parts inspection, living creature examination, reading aid, and collectables examination (coins, stamps). Compatibility: Windows 7/Vista/XP. Package Includes: Microscope (1x), Stand (1x), USB Cable (1x), Software Application CD (1x User’s Manual and software), Calibration Tool (1x), Velvet Carrying Case (1x).

AmScope T490B-DKO 40X-2000X Trinocular Compound Darkfield Microscope with Oil Condenser Review

AmScope T490B-DKO 40X-2000X Trinocular Compound Darkfield Microscope with Oil Condenser

This professional trinocular compound microscope provides both darkfield and brightfield features. It boasts three unique features no other microscope dealer can claim, designed for professional applications in clinical offices and research laboratories. Different from most other microscopes on the market, the T490B is remarkable because it features 1) simultaneous viewing through the photo port and eyepieces, 2) an adjustable parfocal trinocular port, and 3) a detachable C-Mount located on the 23mm photo port. T490B’s adjustable trinocular port creates a parfocal optical system by allowing the image system attached to the photo port and the image in the eyepieces to be in focus at the same time. Traditional microscopes on the market allow you to see through either the trinocular port or eyepieces, forcing you to switch between the port and eyepieces. Because their trinocular port is not designed to be par-focal with the microscope optical system, you have to conduct re-focusing after each “switch”. The T490B, however, has simultaneous viewing and parfocal trinocular port so that these “switch” and “re-focusing” are no longer necessary. Especially handy for teaching demonstrations, clinical examinations and laboratory applications, these features allow your students or colleagues to view crystal clear images simultaneously while you work through the eyepieces. In addition, the T490B’s industry standard 23mm photo port can be converted into a C-Mount port by putting on the free C-mount adapter included, allowing you to attach most of microscope digital cameras and video systems on the market. This versatile microscope is also capable of being upgraded with various accessories and attachments for additional functions. The T490B also includes a 30° inclined 360° swiveling compensation-free trinocular head, a 3-D mechanical stage, and an intensity-variable halogen illumination system. This microscope is made by the same technicians and on the same production

AmScope SM-5TX Professional Trinocular Stereo Zoom Microscope, WH10x Eyepieces, 3.5X-45X Magnification, 0.7X-4.5X Zoom Objective, Ambient Lighting, Ball-Bearing Double-Arm Boom Stand, Includes 0.5X Barlow Lens Review

AmScope SM-5TX Professional Trinocular Stereo Zoom Microscope, WH10x Eyepieces, 3.5X-45X Magnification, 0.7X-4.5X Zoom Objective, Ambient Lighting, Ball-Bearing Double-Arm Boom Stand, Includes 0.5X Barlow Lens

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  • Professional stereo microscope with boom stand has long working distance to enable users to perform work or manipulate large items, including circuit boards and dental appliances
  • Trinocular viewing head with pair of 10x super-widefield eyepieces, adjustable interpupillary distance, fixed 45-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to enable sharing
  • 0.7x-4.5x zoom objective provides continuous zoom magnification and longer focal length for inspecting large-scale specimens, and a 0.5x Barlow lens extends the working distance
  • Ambient lighting illuminates the specimen, eliminating the need for power or batteries
  • Ball-bearing controlled double-arm boom stand has 22-1/2″ arms and 24″ pillar to enable users to position the microscope head on three axes (X, Y, and Z)

The AmScope SM-5TX professional trinocular stereo zoom microscope has a pair of 10x super-widefield high-eyepoint eyepieces, a 0.7x-4.5x zoom objective, a 0.5x Barlow lens, and a ball-bearing controlled double-arm boom stand. The microscope has an overall magnification range of 3.5x-45x. The trinocular viewing head has an interpupillary range of 55 to 75mm, a 45-degree inclination to reduce eye and neck strain, and 360-degree rotation to enable sharing. The vertical trinocular port can be used as a C-Mount or 23mm photo port (camera sold separately). The WH10x20mm super-widefield high-eyepoint eyepieces combine with the 0.7x-4.5x zoom objective to provide continuous zoom magnification and a longer working distance for inspecting large-scale specimens that require handling or repair. The microscope comes with a 0.5x Barlow lens that can be added to the objective to decrease the magnification range. A Barlow lens with a magnification of less than 1.0 reduces magnification and increases the working distance. High-eyepoint eyepieces ease viewing for users who wear glasses, and dioptric adjustment accommodates individual eye-strength differences. A stereo microscope, sometimes called an inspection or dissection microscope, has low magnification and a long working distance that enables users to manipulate the object being inspected.

Ambient lighting illuminates the specimen, eliminating the need for power or batteries. The microscope has a ball-bearing controlled double-arm boom stand that enables users to position the microscope head on all three axes (X, Y, and Z). Bilateral focus eases use for left- and right-handed users. The stand has 22-1/2″ horizontal double arms. The pillar is 24″ and the focus rack has a 3″ diameter. The solid cast-steel base is 1 x 10 x 15 inches (H x W x D, where H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back).

Specifications
Head Trinocular
Magnification range 3.5x-45x
Zoom objective power 0.7x-4.5x
Eyepieces (DIN, 30mm) WH10x20mm high-eyepoint
Trinocular port C-Mount or 23mm
Field of view 2-1/2″
Optical working distance Up to 8″
Microscope stand Ball-bearing controlled double-arm boom stand
Head movement X-, Y-, and Z-axes
Illumination type N/A
Light source Ambient
Power N/A

Microscopes are instruments used to enhance the resolution of an object or image. Types include compound, stereo, or digital. Compound microscopes use a compound optical system with an objective lens and an eyepiece. Stereo microscopes show object depth in a three-dimensional image. Digital microscopes are used to display an image on a monitor, rather than looking through a lens. Microscopes can have monocular (one), binocular (two), or trinocular (three) eyepieces, with varying magnification abilities. Magnification ability refers to the size of an image. Resolution, also known as resolvant power, refers to the clarity of the image. The interaction between field of view (FOV), numerical aperture (NA), and working distance (WD) determines resolution. Microscopes can control magnification through a fixed focus, or through a range of adjustments. They can also utilize LED, fluorescent, and mirror light sources to help control viewing capabilities. Microscopes are widely used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veterinary industries.

United Scope manufactures microscopy equipment and accessories under the brand name AmScope. The company, founded in 1996, is headquartered in Irvine, CA.

What’s in the Box?

  • AmScope SM-5TX stereo zoom microscope with ball-bearing double-arm boom stand
  • WH10x20mm eyepieces, 30mm, one pair
  • 0.7x-4.5x zoom objective
  • 0.5x Barlow lens
  • Focus rack
  • Eye guards, one pair
  • Instructions

AmScope M500 Monocular Compound Microscope, WF10x Eyepiece, 40x-1000x Magnification, Anti-Mold Optics, Tungsten Illumination, Brightfield, Abbe Condenser, Coarse and Fine Focus, Plain Stage Review

AmScope M500 Monocular Compound Microscope, WF10x Eyepiece, 40x-1000x Magnification, Anti-Mold Optics, Tungsten Illumination, Brightfield, Abbe Condenser, Coarse and Fine Focus, Plain Stage

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  • Compound microscope provides high magnification for biological use and educational applications
  • Monocular viewing head with 10x widefield eyepiece, fixed 45-degree vertical inclination to reduce eye and neck strain, 360-degree rotation capability to enable sharing, and anti-mold head to preserve optics in high-humidity areas
  • Forward-facing nosepiece with precision-ground 4x, 10x, 40x(S), and 100x(S,Oil)DIN achromatic glass objectives provide color correction of magnified images
  • Brightfield imaging with rheostat-controlled tungsten (incandescent) illumination and spiral-control 1.25 NA Abbe condenser with iris diaphragm and color filter
  • Plain stage with clips to secure specimen, separate coarse and fine focus on rack-and-pinion mechanism to provide precise focus, and tension control to prevent stage drift

The AmScope M500 monocular compound microscope has a 10x widefield eyepiece, a forward-facing nosepiece with four DIN achromatic objectives, tungsten illumination, separate coarse and fine focus, a 1.25 NA Abbe condenser, and a plain stage. The monocular viewing head has a fixed 45-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to enable sharing. An anti-mold head preserves optics in high-humidity areas. The forward-facing revolving nosepiece has 4x, 10x, 40x(S), and 100x(S,oil) DIN achromatic objectives that provide color correction of magnified images. The 40x(S) and 100x(S,Oil) objectives are spring loaded to prevent damage to the slide or objective when focusing. The 100x(S,Oil)-immersion objective uses oil between the specimen and the objective lens to provide increased resolution over a standard objective. The fully-coated optical system provides sharp, high-resolution images. A compound microscope is used for inspection and dissection of specimens when two-dimensional images are desired.

The microscope has lower (diascopic) Brightfield illumination that transmits light up through the specimen for enhanced visibility of translucent and transparent objects. Brightfield (BF) illumination allows the specimen to absorb light, resulting in a dark image on a light background. Tungsten (incandescent) illumination provides bright light, and a rheostat controls the amount of light emanating from the lamp. The 1.25 NA Abbe condenser can be adjusted to control the distance of the light from the stage and has an iris diaphragm to optimize the amount of light illuminating the specimen. The condenser is controlled using a spiral mechanism. The plain stage has clips to secure the specimen in place, and is 4-3/8 x 4-3/4 inches (110 x 120mm) (W x D; where W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back). Separate coarse and fine focus eases focusing for left- and right-handed viewers, and a rack-and-pinion mechanism provides precise and secure focusing. Focus tension control prevents stage drift. All the mechanical parts of the microscope are constructed of metal to provide durability and resistance to wear. The metal frame has a stain-resistant enamel finish for durability and to ease cleaning. The microscope is powered by a 110V wall outlet.

Specifications
Head Monocular
Eyepieces WF10x (23mm)
Lenses 10x, 20x, 40x(S), 100x(S,Oil) DIN achromatic (20mm)
Stage Plain stage with stage clips
Focus

Nikon 7581 MONARCH 5 8×56 Binocular (Black) Review

Nikon 7581 MONARCH 5 8x56 Binocular (Black)

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  • All MONARCH 5 binoculars are now built with Nikon’s legendary ED (Extra-low Dispersion) glass lenses, which correct chromatic aberrations across the furthest limits of the visible light range and effectively compensate for color fringing.
  • Dielectric High-Reflective Multilayer Prism Coatings are applied to all lenses and prism coatings to provide high-contrast images and accurate color reproduction.
  • Massive 56mm objective lenses provide superior light gathering ability for overcoming less than ideal lighting conditions.

The MONARCH 5 8×56 combines the superiority of Nikon’s ED (extra-low dispersion) Glass with Fully Multicoated Eco-Glass Lenses to deliver images that are extremely lifelike in color and detail. The MONARCH 5 also features a lightweight design, turn-and-slide rubber eyecups and long eye relief, making this binocular comfortable and easy to use.

AmScope SM-4BZ-FRL Professional Binocular Stereo Zoom Microscope, WH10x Eyepieces, 3.5X-90X Magnification, 0.7X-4.5X Zoom Objective, 8W Fluorescent Ring Light, Double-Arm Boom Stand, 110V-120V, Includes 0.5x and 2.0x Barlow Lenses Review

AmScope SM-4BZ-FRL Professional Binocular Stereo Zoom Microscope, WH10x Eyepieces, 3.5X-90X Magnification, 0.7X-4.5X Zoom Objective, 8W Fluorescent Ring Light, Double-Arm Boom Stand, 110V-120V, Includes 0.5x and 2.0x Barlow Lenses

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  • Professional stereo microscope with boom stand has long working distance to enable users to perform work or manipulate large items, including circuit boards and dental appliances
  • Binocular viewing head with pair of 10x super-widefield eyepieces, adjustable interpupillary distance, fixed 45-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to enable sharing
  • 0.7x-4.5x zoom objective provides continuous zoom magnification and longer focal length for inspecting large-scale specimens, a 0.5x Barlow lens extends the working distance, and a 2.0x Barlow lens extends the magnification range
  • Removable 8W fluorescent ring in a plastic housing provides bright, shadow-free illumination
  • Double-arm boom stand has 20″ arms and 17″ pillar to enable users to position the microscope head on three axes (X, Y, and Z)

The AmScope SM-4BZ-FRL professional stereo zoom microscope has a pair of 10x super-widefield high-eyepoint eyepieces, a 0.7x-4.5x zoom objective, two Barlow lenses, and a double-arm boom stand. The microscope has an overall magnification range of 3.5x-90x. The binocular viewing head has an interpupillary range of 55 to 75mm, a 45-degree inclination to reduce eye and neck strain, and 360-degree rotation to enable sharing. The WH10x20mm super-widefield high-eyepoint eyepieces combine with the 0.7x-4.5x zoom objective to provide continuous zoom magnification and a longer working distance for inspecting large-scale specimens that require handling or repair. The microscope coms with 0.5x and 2.0x Barlow lenses that can be added to the objective to increase the magnification range. A Barlow lens with a magnification of less than 1.0 reduces magnification and increases the working distance, while a Barlow lens with a magnification greater than 1.0 increases the magnification and reduces the working distance. High-eyepoint eyepieces ease viewing for users who wear glasses, and dioptric adjustment accommodates individual eye-strength differences. A stereo microscope, sometimes called an inspection or dissection microscope, has low magnification and a long working distance that enables users to manipulate the object being inspected.

The removable 8W fluorescent ring light provides cool, white light for observing specimens as they would appear in their natural environment. A ring light provides shadow-free illumination. It has a 2-3/8″ inner diameter and uses a 110V-120V power supply. The microscope has a double-arm boom stand that enables users to position the microscope head on all three axes (X, Y, and Z). Bilateral focus eases use for left- and right-handed users. The stand has 20″ double arms, and a 30″ overall length. The pillar is 17″ and the focus rack has a 3″ diameter. The solid cast-steel base is 2 x 8-1/4 x 10-1/4 inches (H x W x D, where H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back).

Specifications
Head Binocular
Magnification range 3.5x-90x
Zoom objective power 0.7x-4.5x
Eyepieces (DIN, 30mm) WH10x20mm high-eyepoint
Zoom range 26:1
Field of view 2-1/2″
Optical working distance Up to 8″
Microscope stand Double-arm boom stand
Head movement X-, Y-, and Z-axes
Illumination type Episcopic (reflected)
Light source Fluorescent ring, 8W
Power 110V-120V

Microscopes are instruments used to enhance the resolution of an object or image. Types include compound, stereo, or digital. Compound microscopes use a compound optical system with an objective lens and an eyepiece. Stereo microscopes show object depth in a three-dimensional image. Digital microscopes are used to display an image on a monitor, rather than looking through a lens. Microscopes can have monocular (one), binocular (two), or trinocular (three) eyepieces, with varying magnification abilities. Magnification ability refers to the size of an image. Resolution, also known as resolvant power, refers to the clarity of the image. The interaction between field of view (FOV), numerical aperture (NA), and working distance (WD) determines resolution. Microscopes can control magnification through a fixed focus, or through a range of adjustments. They can also utilize LED, fluorescent, and mirror light sources to help control viewing capabilities. Microscopes are widely used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veterinary industries.

United Scope manufactures microscopy equipment and accessories under the brand name AmScope. The company, founded in 1996, is headquartered in Irvine, CA.

What’s in the Box?

  • AmScope SM-4BZ-FRL stereo zoom microscope with double-arm boom stand
  • WH10x20mm eyepieces, 30mm, one pair
  • 0.7x-4.5x zoom objective
  • 0.5x Barlow lens
  • 2.0x Barlow lens
  • Fluorescent ring light, 8W (FRL8)
  • Focus rack
  • Eye guards, one pair
  • Instructions

Nikon 7294 Monarch ATB 8×42 Binocular Review

Nikon 7294 Monarch ATB 8x42 Binocular

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  • Waterproof/Fogproof
  • Dielectric High-Reflective Multilayer Prism Coating
  • Fully Multicoated lenses & Phase-Correction Coated Prisms
  • Multi-Setting Click Stop Eyecups

Size:8×42  |  Color:Black

Product description

A roof prism binocular with a hearty feature-set that’s easy on the wallet and the environment? Yes! – the Monarch ATB 8×42 from Nikon is here – it’s layered with assets, and it won’t break the bank when you bring one home.

Nikon’s proprietary lead and arsenic free optical-glass formula, known as Eco-Glass, is used for all lenses and prisms in this fine Monarch binocular. All of the air-to-glass surfaces are fully multicoated to ensure maximum light transmission, sharpness, and contrast. The roof prisms are finished with a dielectric coating that enhances the efficiency of the optical system to near perfection. This easy-to-handle optic is fully waterproof and fogproof, and a tactile rubberized exterior ensures a secure grip at all times. The centered focus knob is fast, accurate, and easy to use. A pair of multi-setting click-stop eyecups and a notable 15.5 mm of eye relief allow you to tailor the binocular to suit your needs – whether you’re wearing glasses or not. Sleek lightweight form factor – excellent ergonomics, easy to carry, durable Center focus knob – fast full-range of focus for quick viewing. Click stop eyecups – clear comfortable view with/without sun/eyeglasses Specifications Prism Type – Roof Magnification – 8x Objective Lens Diameter – 42 mm Angle of View – 6.3 Field-of-View – 330′ @ 1000 yd / 110 m @ 1000 m Minimum Focus Distance – 8.2′ / 2.5 m Exit Pupil Diameter – 5.3 mm Eye Relief – 19.6 mm Interpupillary Adjustment – 56 – 72mm / 2.2 – 2.83 Focus Type – Center Weatherproofing – Water and fogproof Dimensions (WxHxD) – 5 x 2.4 x 5.7 / 127 x 60.96 x 144.78mm Weight – 21.5 oz / 609.53g

From the Manufacturer

https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/MonarchLogo._V202516172_.jpg http://binocularstelescopes.tektron.top/wp-content/uploads/2018/06/atb_logo._V202516209_.jpg

The Monarch ATB 42mm with Dielectric High-Reflective Multilayer Prism Coating binocular features brighter, sharper colors, crisp and drastically improved low-light performance. A new body style provides unparalleled strength and ruggedness in a package that is comfortable to carry all day. With rugged rubber armor for added durability and a firm grip even in the worst conditions, Nikon guarantees every ATB to be 100% waterproof and fogproof, each is backed by Nikon’s 25 Year Limited Warranty and No-Fault Repair/Replacement Policy. The new Monarch ATB 42mm with Dielectric High-Reflective Multilayer Prism Coating binocular is available in 8×42, 10×42 and 12×42. It is also available in Team REALTREE models with the REALTREE APG HD camouflage pattern.

Technical Specs

Model Focusing
System
Magnification Objective
Diameter
Angular
FOV Real
FOV @
1,000 Yards
Close
Focus Distance
Exit
Pupil
Relative
Brightness
Eye
Relief
Size
(L&W)
Weight Waterproof Prism
Coating
7294 & 7297 CF 8 42 6.3 330 8.2 5.3 28.1 19.6 5.7×5.1 21.5 Y Dielectric
7295 & 7298 10 5.5 288 4.2 17.6 18.4
7296 & 7299 12 5 262 3.5 12.3 15.4

Dielectric High-Reflective Coating – This technique provides almost the same brightness as that perceived by the naked eye
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Multi-Setting Click Stop Eyecups – provides fast, effective eye relief
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Fully Multicoated Lenses
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Rugged Rubber Armor for Added Durability
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Warranty Information

Nikon is dedicated to quality, performance and total customer satisfaction. If your Nikon binocular, Spotting Scope or Fieldscope requires service or repair not covered by our 25 Year Limited Warranty, Nikon will repair or replace it (even it was your fault) for just $10, plus return shipping and handling.
Excludes – StabilEyes, Laser Rangefinders and Spotting Scope/Fieldscope eyepieces.

FAQ’s

Real field of view
Real field of view is the angle of the visible field, seen without moving the binoculars, measured from the central point of the objective lens. The larger the value is, the wider the viewfield available. For example, binoculars with a wider field of view are advantageous for locating fast-moving wild birds within the viewfield. This also applies for finding small nebulas or a cluster of stars in astronomical observations.

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Apparent field of view

Apparent field of view is the angle of the magnified field when you look through binoculars.
The larger the apparent field of view is, the wider the field of view you can see even at high magnifications.

With the conventional method used previously, the apparent field of view was calculated by multiplying the real field of view by the binocular magnification. (With this formula, apparent field of view wider than 65˚ is called wide field of view.)

After revision, Nikon’s figures are now based on the ISO 14132-1:2002 standard, and obtained by the following formula:

tan ω’ = τ x tan ω
Apparent field of view: 2ω’
Real field of view: 2ω
Magnification: τ
(With this formula, apparent field of view wider than 60° is called wide field of view.)

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For example, the apparent field of view of 8x binoculars with an 7.0°real field of view is as follows:
2ω’ = 2 x tan-1 (r x tan ω)

= 2 x tan-1 (8 x tan 3.5)
= 52.1
°

Relative Brightness
Relative brightness value is obtained by squaring the diameter of the exit pupil. The greater the relative brightness is, the brighter the image will be. With 8×42 binoculars, the brightness is (42÷8)2= 28.1. This means that if the magnification is the same, the larger the effective diameter of the objective lens, the brighter the image will be.

Do binoculars with the same exit pupil offer the same brightness?

No. Brightness may vary even if the exit pupil is the same. This is because the amount of light reaching the viewer’s eyes varies according to the number of lens elements and quality of lens/prism coatings. Superior optical design and highquality coating greatly contribute to the brightness of binoculars. Brightness values specified in product brochures, etc. are theoretical ones calculated in the design process. Please note these factors when comparing actual brightness values.

Prism Coatings
Multilayer coating is also applied to prisms to raise transmittance. A roof prism system has one surface that does not feature total internal reflection, so vapor deposition with metals, etc. must be used to raise the reflectivity of this surface. Also, phase-correction coating on roof surface ensures high-contrast images.
*Binoculars’ brightness and contrast are affected by not only prism coatings, but also the number of objective lens and eyepiece lens, and types of coatings.


http://binocularstelescopes.tektron.top/wp-content/uploads/2018/06/Coatings._V202987056_.jpgMetal-vaporized, high-reflectivity prism coating
Using vacuum-vaporization technology, metallic material such as aluminum or silver is applied to the reverse side of a prism surface that is not totally reflective. This raises the reflectivity of the prism mirror surface.

Dielectric high-reflective multilayer prism coating
This coating features reflectance that exceeds 99%. By utilizing light interference, this coating assures high reflectivity across the full visible range, and ensures high color reproducibility.

http://binocularstelescopes.tektron.top/wp-content/uploads/2018/06/ReflectiveCharacteristics._V202987021_.jpgReflectance characteristics of prism coatings on mirror surface
The horizontal axis indicates the wavelength of light. The vertical axis indicates the reflectance of light.
Binoculars’ brightness is determined not only by the reflective mirror, but also by the total optical system such as the number of lenses and quality of coatings.

Phase-correction coatinghttp://binocularstelescopes.tektron.top/wp-content/uploads/2018/06/PhaseCorrection._V202987059_.jpg
A roof (Dach) surface can cause phase shift of light that affects image resolution. This phenomenon is caused by phase differences arising from total light reflection on a roof (Dach) surface and it can occur with even a perfectly processed prism. Phase-correction coating is applied to the surface to minimize loss of resolution, ensuring high-contrast images.

Twilight Factor
The factor that has the greatest impact on resolution or image detail, will be dependent upon the amount of light available during the time of observation. During daylight hours, when your eye pupil size will be only about 2 to 3mm, magnification will be the principal factor in image resolution. At night, with the eye pupil dilated to 6 to 8mm, aperture size is the controlling factor. In twilight conditions both of these factors control resolution effectiveness and the twilight factor is the term that compares binocular performance under these conditions.

The twilight factor is calculated by taking the square root of the product of the magnification and the aperture. The higher the twilight factor, the better the resolution of the binocular when observing under dim light conditions. For example, a 10 X 40 (twilight factor 20) would effectively resolve better under these conditions than a 7 X 35 (twilight factor 15.4) even though the 10 X 40 has a smaller exit pupil. Remember, however, that the twilight factor does not take into account the transmittance or quality of the optical system.

AOFAR Range Finder 1000 Yards Waterproof Hunting Golf, 6X 25mm Measurer Laser Rangefinder Speed Scan Fog, Free Battery Review

AOFAR Range Finder 1000 Yards Waterproof Hunting Golf, 6X 25mm Measurer Laser Rangefinder Speed Scan Fog, Free Battery

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  • High Precision Laser Rangefinder: our engineer advanced pinsensor technology, magnification objective is 6x 25mm range measure accuracy is±1yard, speed measure accuracy ±5km/h.
  • Hunting Range Finder: 6x magnification, measure up to 1000yards, it also has fog and speed modes, give you amazing experience for hunting.
  • Golf Rangefinder: with continuous scan mode, flagpole lock, golfers can easily identify flagstick. Particularly, useful when the flagpole is partially blocked.
  • Lightweight and portable: measures just 110x 75 x 45 mm and weighting just 180g, with a water and dust resistant, durable body, perfect for carrying while golfing or hunting.
  • Full Package: including carrying pouch, free CR2 battery, strap, carabiner shape, microfiber cleaning cloth and quick start guide, we are factory direct selling, AOFAR happy guarantee (2 years) and lifetime customer support.

ABOUT AOFAR:
Nearly twenty years, AOFAR focus on the research and development of outdoor products especially in range finder and compass, AOFAR has first-class production technology and R&D experts. Nowadays, our products is selling all over the world and very popular. We dedicate to improve customer’s outdoor life by rich experience and expertise.
CHOOSE AOFAR! ENJOY LIFE!

Features:
High accuracy, short measuring time, low power consumption, automatic power-off
Portable optoelectronic device, waterproof

Specification:
Laser type:905nm
Measuring range of distance:5-1000yards
Measuring range of speed:0-300km/h
Magnification:6x
Eye piece size:16mm
Exist pupil diameter:3.8mm
Range measure accuracy:±1yard
speed measure accuracy ±5km/h
Net weight:180g
Dimensions:110*75*45mm
Battery:CR2-3V
Operating temperature:-10°C~50°C

Package including:
1 Laser rangefinder
1 User manual
1 Battery
1 Lanyard
1 Carabiner shape
1 Carrying pouch
1 Cleaning cloth

Galileo 800mm x 90mm Smartphone Photo Adapter Reflecting Telescope Review

Galileo 800mm x 90mm Smartphone Photo Adapter Reflecting Telescope

    This fits your .
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  • 800mm x 90mm Astronomical Reflector Telescope
  • 1¼″ 6mm eyepiece (133X Power/Magnification)
  • 1¼″ 20mm eyepiece (40X Power/Magnification)
  • SPA Smartphone adapter lets you use the camera feature on your smartphone to take pictures or video through the optics of your Telescope
  • Sturdy, fully adjustable, pre-assembled metal tripod featuring an accessory tray

This Galileo SS-80090TR 800mm x 90mm Astronomical Reflector Telescope and Galileo #G-SPA Smartphone Adapter kit lets you use the camera feature on your Smartphone to take pictures or video through the optics of your telescope, or use your smartphone to assist navigating your telescope view to your celestial object of interest. Finding your target is easy with its Altitude Azimuth Tracker mount featuring slow motion altitude and azimuth adjustment rods for precision adjustments, attached to a sturdy, fully adjustable, pre-assembled metal tripod featuring an accessory tray with slots to place 4 1¼” eyepieces or lenses and retractable rubber feet. The Galileo #SS-80090TR optical tube assembly features an 800mm focal length. The primary mirror is 90mm in diameter and is mounted in a heavy duty mirror cell with push / pull collimation screws. The finderscope is Galileo’s Mars’ Eye electronic RED DOT Finderscope which helps by getting the observer behind the telescope without losing the surrounding field of view when targeting objects. Also included with the #SS-80090TR are a 1¼″ 6mm eyepiece (133X Power/Magnification) and a 1¼″ 20mm eyepiece (40X Power/Magnification). As well as mounting to the telescope, the Galileo #G-SPA Smartphone adapter lets you use the camera feature on your smartphone to take pictures or video through the optics of your Telescope (or very own binoculars, spotting scope, microscope etc. as well). It also allows you to mount your Smartphone on a standard camera tripod (not included) for hands-free video calls, family photos with everyone in the picture, or anytime you want to include yourself in the action. Fits most popular smartphones.

AmScope SE306-PZ-LED 20X-80X LED Cordless Stereo Microscope w/Top & Bottom Light illumination System Review

AmScope SE306-PZ-LED 20X-80X LED Cordless Stereo Microscope w/Top & Bottom Light illumination System

    This fits your .
  • Make sure this fits by entering your model number.
  • Three stereo magnification settings: 20X, 40X, 80X
  • High quality 10X and 20X widefield eyepieces
  • Backward widefield binocular head
  • Sturdy pillar stand with all metal framework and built-in LED top and bottom lights
  • Rechargeable AA batteries and one AC adapter/charger are included

This cordless LED binocular stereo microscope has both top and bottom lights. It is designed for indoor and outdoor applications, powered through an outlet or by batteries. It is a portable microscope that can be taken out to field sites. This microscope offers sharp clear stereo images, three magnification levels (20X, 40X, 80X when used with both sets of eyepieces), and provides freedom from cords. It comes with a rechargeable illumination system capable of taking rechargeable AA batteries, and an AC adapter/charger. This durable and reliable microscope is a perfect instrument for viewing insects, plants, rocks, stamps, coins, jewel, etc.. It is also an ideal microscope for students and hobbyists.

Features :
– A great cordless stereo microscope with top and bottom LED lights
– Powered by either batteries or by an outlet
– Convenient for on-site applications
– Built-in rechargeable incident and transmitted LED illumination system
– 10-LED top light, 7-LED bottom light
– Three magnification settings: 20X, 40X, 80X
– 45 degree inclined binocular head with locked-in eyepieces
– Adjustable interpupillary distance
– Sharp stereo erect images with a wide field of view
– High quality original true color
– Ocular-tube with adjustable diopter
– Accurate alignment reducing eye strain for longer periods of viewing
– Rugged metal frame and stand
– Full optical glass elements
– Precise ground glass lenses
– All metal mechanical components
– GS CE approval electric apparatus
– White/black plate and rubber eyeguards included
– Manufactured under ISO 9001 quality control system
– Excellent five (5) year warranty
– Unbeatable low price guaranteed or the difference back!
– Satisfaction guaranteed or your money back!

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