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List Price: $420.95
Price: $289.99
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read more Details 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 very package that is comfortable to hold all day. With rugged rubber armor for added durability and a firm grip even in the worst conditions, Nikon guarantees every ATB being 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 for sale in 8x42, 10x42 and 12x42. It is also for sale in Team REALTREE models with all the REALTREE APG HD camouflage pattern.
Technical Specs
Focusing System – Center Focus
Magnification – 8x
Objective Diameter – 42mm
Angular FOV – Real – 6.3°
Angular FOV – Apparent – 47.5°
FOV @ 1000 yds – 330 ft
Close Focus Distance – 8.2 ft
Exit Pupil – 5.3mm
Relative Brightness – 28.1
Eye Relief – 19.6
Size (L&W) – 5.7 x 5.1
Weight – 21.5
Waterproof/Fogproof – Yes
Prism coating – Dielectric
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
5.7x5.1
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 identical brightness as that perceived by the naked eye
Multi-Setting Click Stop Eyecups – provides fast, effective eye relief
Fully Multicoated Lenses
Rugged Rubber Armor for Added Durability
Warranty Information
Nikon is committed to quality, performance and total customer satisfaction. In case your Nikon binocular, Spotting Scope or Fieldscope requires service or repair not protected by our 25 Year Limited Warranty, Nikon will repair or change it (even it absolutely was your fault) just for $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 may be the angle from the visible field, seen without moving the binoculars, measured from your central point with 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 from the viewfield. This also applies to find small nebulas or a cluster of stars in astronomical observations.
Apparent field of view
Apparent field of view is the angle of the magnified field whenever you look over binoculars.
The larger the apparent field of view is, the wider the concept of view you are capable of see even at high magnifications.
With the typical method used previously, the apparent field of view was calculated by multiplying the true field of view through the binocular magnification. (With this formula, apparent field of view wider than 65˚ is known as wide field of view.)
After revision, Nikon's figures have become based around the ISO 14132-1:2002 standard, and obtained from 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 named wide field of view.)
For example, the apparent field of take a glance at 8x binoculars with the 7.0°real field of view will be 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 with the exit pupil. The greater the relative brightness is, the brighter the style will be. With 8x42 binoculars, the brightness is (42÷8)2= 28.1. This implies that when the magnification could be the same, the larger the effective diameter in the objective lens, the brighter the look will be.
Do binoculars with all the same exit pupil offer exactly the same brightness?
No. Brightness may vary even when the exit pupil may be the same. This is because the amount of sunshine reaching the viewer's eyes varies according on the number of lens elements superiority lens/prism coatings. Superior optical design and highquality coating greatly contribute towards the brightness of binoculars. Brightness values specified in product brochures, etc. are theoretical ones calculated inside design process. Please be aware these factors comparing actual brightness values.
Prism Coatings
Multilayer coating can be placed on prisms to raise transmittance. A roof prism system has one surface that does not feature total internal reflection, so vapor deposition with metals, etc. have to be utilized to raise the reflectivity of this surface. Also, phase-correction coating on roof surface ensures high-contrast images.
*Binoculars' brightness and contrast are suffering from not only prism coatings, but additionally the number of objective lens and eyepiece lens, and types of coatings.
Metal-vaporized, high-reflectivity prism coating
Using vacuum-vaporization technology, metallic material for example aluminum or silver is used towards the reverse side of your prism surface that is not totally reflective. This raises the reflectivity from 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 throughout the full visible range, and ensures high color reproducibility.
Reflectance 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 with the reflective mirror, but additionally through the total optical system like the quantity of lenses and quality of coatings.
Phase-correction coating
A roof (Dach) surface may cause phase shift of light that affects image resolution. This phenomenon is brought on by phase differences arising from total light reflection on the roof (Dach) surface and it can occur with a good perfectly processed prism. Phase-correction coating is used to the surface to lower loss of resolution, ensuring high-contrast images.
Twilight Factor
The factor which includes the maximum impact on resolution or image detail, is going to be dependent upon the amount of light available during enough time of observation. During daylight hours, when your talent pupil size will be only about 2 to 3mm, magnification is going to be the main aspect in image resolution. At night, using the eye pupil dilated to 6 to 8mm, aperture size will be the controlling factor. In twilight conditions both of the factors control resolution effectiveness and the twilight factor may be the term that compares binocular performance under these conditions.
The twilight factor is calculated by utilizing the square root in the product with the magnification along with the aperture. The larger the twilight factor, the higher the resolution with the binocular when observing under dim light conditions. For example, a ten X 40 (twilight factor 20) would effectively resolve better under these conditions compared to a 7 X 35 (twilight factor 15.4) though the 10 X 40 features a smaller exit pupil. Remember, however, how the twilight factor does not take into account the transmittance or quality from the optical system.
Dielectric high-reflective multi-layer prism coating. Fully multi-coated lenses. Protective rubber-armored coating. Waterproof and fog proof.
Waterproof/Fogproof
Dielectric High-Reflective Multilayer Prism Coating
Fully Multicoated lenses & Phase-Correction Coated Prisms
Multi-Setting Click Stop Eyecups
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