Description
Rifle Scope Product Details
Athlon Optics Cronus UHD 4.5-29×56 First Focal Plane Riflescopes
Rifle Scope Product Features
0.25 MOA Click Value, 110 MOA Total Elevation Adjustment, 25 Yard to Infinity Parallax Adjustment, 11 Illumination Settings.
First focal plane reticle stays valid at all power settings allowing you to fully utilize the specially designed reticle that shrinks or grows along with your target as you zoom in or out.
ED glass significantly reduces chromatic aberration giving you an utmost bright and sharp image with true color reproduction.
Precision Zero Stop System The system allows you to lock down your zero position and dial back to it with a sharp and precise stop right at your zero mark even you are turning it in pitch-dark or blinded folded.
Advanced Fully Multicoated optics effectively reduces reflected light and increases the transmission of light giving you a brighter image than normal single coated lenses.
Sport type: Tactical
Cronus BTR UHD
Whether you want to engage in precision long-range shooting and tactical applications, or extreme long range hunting adventures, the new Cronus BTR UHD scope is just what the doctor ordered. Loaded with features this scope will not let you down when you need it most. This First Focal Plane scope features ED glass, Advanced Fully Multi-Coated lenses, Argon purged, a true zero stop and much more. When you need the best, the Cronus BTR UHD is the answer!
Key Features
UHD Glass
Extra-Low Dispersion glass significantly reduces chromatic aberration giving you an utmost bright and sharp image with true color reproduction.
Advanced Fully Multi-coated
Fully Multi-coated optics effectively reduces reflected light and increases the transmission of light giving you a brighter image than normal single coated lenses
XPL Coating
XPL Coating gives you an extra protection on the exterior lenses from dirt, oil and scratches.
Precision Zero Stop System
Precision Zero Stop System allows you to return to your zero position and dial back to it with a sharp and precise stop right at your zero location.
APLR FFP IR MOA
APLR FFP IR MOA reticle has a large illuminated center with 1 moa incremental hash marks and drop lines in 5 moa incremental on vertical direction down to 50 moa, which help you quickly lock in your target and set holdover positions. The illuminated portion has a 2 moa center cross and 40 moa cross lines (50 moa on lower vertical line). The drop lines have smaller dots with 1 moa in between and bigger dots at each 5 moa interval. The illuminated reticle provides excellent low light visibility and accurate elevation holdovers all the way up to 50 moa.
Subtensions in MOA: A1 (0.14); A2 (2); B1 (1); B2 (0.5); B3 (1.5); B4 (2); C1 (1); C2 (1); C3 (2); C4 (5); C5 (1); C6 (5); D1 (0.2); D2 (0.3).
1-6×24 ATSR2 MOA 4.5-29×56 APRS MIL 4.5-29×56 APLR MOA 4.5-29×56 APRS1 MIL 4.5-29×56 APLR5 MOA 4.5-29×56 APRS MIL
Tube Diameter 30 mm 34 mm 34 mm 34 mm 34 mm 34 mm
Focal Plane Second First First First First First
FoV at 100Y 106.9-17.7 ft 24.8-3.83 ft 24.8-3.83 ft 24.8-3.83 ft 24.8-3.83 ft 24.8-3.83 ft
Eye Relief 3.6-4.0″ 3.6-3.8″ 3.6-3.8″ 3.6-3.8″ 3.6-3.8″ 3.6-3.8″
Turret Style Exposed Exposed Exposed Exposed Exposed Exposed
Length 10.6″ 14.4″ 14.4″ 14.4″ 14.4″ 14.4″
Weight 18.8 oz 35.8 oz 35.8 oz 35.8 oz 35.8 oz 35.8 oz
About the Athlon Optics Brand
Athlon Optics is a premium supplier for rifle scopes, optics, mounts, and other components used for firearms like rifles and long guns. They design and supply their mounts and related products by using building materials which are resilient and long lasting. This includes the Athlon Optics Cronus UHD 4.5-29×56 First Focal Plane Riflescopes by Athlon Optics. For more shooting goods, visit their website.
What You Need to Know About Rifle Optics
Rifle scopes allow you to precisely aim a rifle at different targets by lining up your eye with the target over a range. They do this through magnifying the target by employing a set of lenses within the scope. The scope’s alignment can be adjusted to account for many ecological elements like wind speed and elevation to make up for bullet drop.
The scope’s function is to help the shooter understand exactly where the bullet will hit based on the sight picture you are seeing with the scope as you line up the scope’s crosshair or reticle with the intended point of impact. Most modern-day rifle scopes and optics have around 11 parts which are found inside and on the exterior of the scope. These parts include the rifle scope’s body, lenses, modification dials, objective focus rings, and other components. See all eleven parts of a rifle scope.
About Scope Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Deciding upon the perfect type of rifle glass depends on what type of shooting you plan to do.
About First Focal Plane Scopes
First focal plane scopes (FFP) feature the reticle before the magnifying lens. This causes the reticle to increase in size based on the level of magnification being used. The outcome is that the reticle measurements are the same at the amplified distance as they are at the non amplified range. As an example, one tick on a mil-dot reticle at one hundred yards with no “zoom” is still the exact same tick at one hundred yards with 5x “zoom”. These types of scopes work for:
- Quick acquisition, far away types of shooting
- Shooting situations where estimations are very little
- Experienced shooters who recognize their aim point “hold over” and “lead” correlations for their long gun
- Shooters who don’t mind the reticle is bigger and takes up more visual sight space than a SFP reticle
Second Focal Plane Optics
Second focal plane glass (SFP) come with the reticle to the rear of the magnifying lens. This induces the reticle to remain at the same dimensions in relation to the amount of magnification being used. The final result is that the reticle dimensions adjust based upon the magnification chosen to shoot over longer distances due to the fact that the reticle measurements present different increments which vary with the magnification. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement. These sorts of glass are useful for:
- Far away styles of shooting where shooters have extra time to make ballistic estimations
- Shooting where most shots occur within much shorter ranges and spaces
- Shooters who would like a clearer optic picture without area used up by the bigger FFP reticle
Details on Rifle Scope Magnification
The amount of magnification a scope offers is identified by the size, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Single Power Lens Rifle Optic Details
A single power rifle scope or optic uses a magnification number designator like 4×32. This means the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of optic can not change considering that it is a fixed power scope.
Info on Variable Power Lens Glass
Variable power rifle scopes have adjustable power. It will list the magnification level in a format like 2-10×32. These numbers suggest the zoom of the scope can be set between 2x and 10x power. This always involves the powers in-between 2 and 10. The power modification is achieved utilizing the power ring component of the scope near the back of the scope by the eye bell piece.
The Power and Range Correlation of Rifle Glass
Here are some advised scope powers and the distances where they can be efficiently used. Keep in mind that high magnification scopes will not be as practical as lower magnification level glass because excessive magnification can be a bad thing. The same idea relates to extended distances where the shooter needs to have adequate power to see where to best aim the rifle at the target.
About Glass Lens Finishes
All modern-day rifle optic and scope lenses are layered. There are various types and qualities of finishings. Lens coating is an essential aspect of a rifle when looking at luxury rifle optics and scope equipment. The glass lenses are one of the most significant components of the scope since they are what your eye sees through while sighting a rifle in on the point of impact. The finishing on the lenses safeguards the lens surface area and also assists with anti glare capabilities from refracted sunrays and color perception.
HD Versus ED Lenses
Some scope manufacturers also use “HD” or high-definition lens coatings which use different techniques, polarizations, aspects, and chemicals to draw out separate colors and viewable definition through the lens. Some scope manufacturers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Single Rifle Scope Lens Covering Versus Multi-Coating
Different scope lenses can also have various coverings applied to them. All lenses generally have at least some type of treatment or coating applied to them prior to being used in a rifle scope or optic assembly. This is due to the fact that the lens isn’t just a raw piece of glass. It is part of the finely tuned optic. It must have a finish applied to it so that it will be efficiently usable in lots of kinds of environments, degrees of sunshine (full light VS shaded), and other shooting conditions.
This lens treatment can offer protection to the lens from scratches while minimizing glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single coated lens depends on the scope producer and how much you paid for it.
Some scope manufacturers also make it a point to define if their optic lenses are covered or “multi” coated. Being “better” depends on the manufacturer’s lens treatment technology and the quality of products used in developing the rifle scope.
Details on Anti-water Covering
Water on an optic’s lens does not assist with maintaining a clear sight picture through a scope in any way. Lots of top of the line and premium scope producers will coat their lenses with a hydrophobic or hydrophilic finishing. The Steiner Optics Nano-Protection is a fine example of this kind of treatment. It treats the surface area of the Steiner optic lens so the H2O molecules can not bind to it or produce surface tension. The outcome is that the water beads move off of the scope to preserve a clear, water free sight picture.
Choices for Mounting Glass on Long Guns
Mounting options for scopes are available in a couple of options. There are the basic scope rings which are separately mounted to the scope and one-piece scope mounts which cradle the scope. These various kinds of mounts also generally come in quick release variations which use throw levers which allow rifle operators to quickly install and dismount the glass.
Hex Key Rifle Optic Ring Mounting Solutions
Standard, clamp style mounting optic rings use hex head screws to install to the flattop style Picatinny scope mounting rails on the tops of rifles. These forms of scope mounts use two individual rings to support the scope, and are normally made from 7075 T6 billet aluminum or similar materials which are designed for far away accuracy shooting. This kind of scope mount is excellent for rifle systems which need to have a long lasting, rock solid mount which will not shift regardless of how much the scope is moved about or jarring the rifle takes. These are the style of mounts you should get for a dedicated optics setup on a long distance hunting or competition firearm which will pretty much never need to be altered or adjusted. Blue 242 Loctite threadlocker can additionally be used on the screws to stop the hex screws from backing out after they are installed tightly in place. An example of these rings are the 30mm type made by Vortex Optics. The set generally costs around $200 USD
Quick-Release Cantilever Glass Ring Mounting Solutions
These kinds of quick-release rifle scope mounts can be used to rapidly attach and take off a scope from a rifle. Multiple scopes can also be switched out if they all use a similar style mount. The quick detach mount style is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach securely to a flat top style Picatinny rail. This permits the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while maintaining the original sighting settings. These kinds of mounts come in beneficial for shooting platforms which are moved a lot, to remove the glass from the rifle for protection, or for optics which are used between several rifles. An example of this mount type is the 30mm mount from Vortex Optics. It normally costs around $250 USD
Glass Tube Sealing and Gas Purging
Moisture inside your rifle optic can mess up a day of shooting and your pricey optic by triggering fogging and producing residue inside of the scope tube. Many scopes avoid moisture from entering the scope tube with a system of sealing O-rings which are waterproof.
What to Know About Rifle Scope Tube Gas Purging
Another component of preventing the buildup of wetness within the rifle optic’s tube is filling the tube with a gas like nitrogen. Since this area is currently taken up by the gas, the scope is less altered by temperature level shifts and pressure distinctions from the outdoor environment which might potentially permit water vapor to seep in around the seals to fill the void which would otherwise be there. These are good qualities of a decent rifle scope to look for.
