Description
Rifle Scope Product Details
NightStar 2.5-35x56SFIR Riflescope
Power 2.5x-35x Objective Diameter (mm) 56 Ocular lens diameter (mm) 37 Ocular length (mm) 70 Field of View (ft@100yds) 37.7-2.7 Filed of View (m/100m) 12.6-0.9 F.O.V. angle (°) 7.2-0.52 Exit Pupil (mm) 10.9″1.6 Focus range (YDS) 15- Coating Green multi coated Number of lens 15 Mount length (mm) 188 Focus type side focus Parallax 0.125 Eye relief (in) 4.4-3.5 Type of reticle illuminated red/green mil dot Mian body diameter (in) 1.18 Ocular cell diameter (in) 1.77 Color finish Black matte Eye guard yes Diopter compensation -3~+2 Windage movement range 50 Elevation movement range 50 MOA/click 0.25 MOA Length (mm) 405 Construction One piece tube Water proof @ 300mm deep and 54 yes Fog proof yes Impact resistance 1000G Cleaning Cloth yes
Rifle Scope Product Features
About the NightStar Manufacturer
NightStar is a premium supplier for weapon scopes, optics, mounting solutions, and other add-ons used for firearms like rifles and long guns. They create and manufacture their mounts and related products by applying building materials which are long lasting and resilient. This includes the NightStar 2.5-35x56SFIR Riflescope by NightStar. For additional shooting goods, visit their website.
What You Need to Know About Rifle Optics
Rifle scopes permit you to exactly align a rifle at various targets by aligning your eye with the target at range. They do this through zoom by utilizing a set of lenses inside the scope. The scope’s alignment can be adjusted to take into account separate natural factors like wind and elevation to account for bullet drop.
The scope’s function is to understand precisely where the bullet will hit based upon the sight picture you are viewing with the scope as you line up the scope’s crosshair or reticle with the intended point of impact. Most contemporary rifle scopes have about eleven parts which are located within and on the exterior of the scope body. These scope parts consist of the rifle scope’s body, lenses, elevation dials or turrets, focus rings, and other components. Learn about the eleven parts of scopes.
Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The style of focal plane an optic has decides where the reticle or crosshair is located in connection with the optic’s zoom. It simply implies the reticle is behind or ahead of the magnification lens of the optic. Picking out the most effective form of rifle scope depends upon what kind of shooting or hunting you intend on doing.
First Focal Plane Glass Info
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. These kinds of scopes are helpful for:
- Quick acquisition, long distance kinds of shooting
- Shooting situations where calculations are marginal
- Experienced shooters who know their aim point “hold over” as well as “lead” ratios for their long guns
- Shooters who do not mind the reticle is bigger and requires more visual eyesight space than a SFP reticle
Info on Second Focal Plane Glass
Second focal plane optics (SFP) feature the reticle to the rear of the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement.
- Far away kinds of shooting where shooters have more time to make ballistic estimations
- Shooting where most of the shots take place within shorter proximities and ranges
- Shooters who choose a clearer optic picture without area used up by the larger sized FFP reticle
Rifle Optic Zoom
The quantity of zoom a scope supplies is determined by the size, thickness, 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 and optic comes with a zoom number designator like 4×32. This indicates the zoom power of the scope is 4x power and the objective lens is 32mm. The zoom of this kind of scope can not change given that it is a set power scope.
Variable Power Lens Rifle Scopes
Variable power rifle scopes use enhanced power. The power modification is handled using the power ring part of the scope near the back of the scope by the eye bell.
Power Levels and Range
Here are some suggested scope power settings and the ranges where they may be efficiently used. Keep in mind that high magnification scopes and optics will not be as efficient as lower magnification level scope and optics due to the fact that increased magnification can be a negative thing in certain situations. The exact same idea applies to extended distances where the shooter needs to have sufficient power to see precisely where to properly aim the rifle at the target.
About Lens Covering
All contemporary rifle scope lenses are covered. Lens covering can be a vital element of a rifle’s setup when thinking about high end rifle optics and scope equipment.
HD Versus ED Lenses
Some scope brands likewise use “HD” or high-definition lens coatings which use various methods, elements, chemicals, and polarizations to draw out various colors and viewable quality through the lens. Some scope producers use “HD” to refer to “ED” to signify the lens has extra-low dispersion glass.
Single Rifle Glass Lens Covering Versus Multi-Coating
Different optic lenses can also have different finishes applied to them. All lenses generally have at least some type of treatment or finish applied to them prior to being used in a rifle scope or optic.
This lens treatment can protect the lens from scratches while reducing 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 maker and how much you paid for it.
Some scope manufacturers also make it a point to define if their optic lenses are layered or “multi” covered. This suggests the lens has had multiple treatments applied to them. If a lens receives multiple treatments, it can prove that a producer is taking multiple actions to combat various environmental elements like an anti-glare covering, a scratch resistant anti-abrasion finish, followed by a hydrophilic covering. This also doesn’t necessarily suggest the multi-coated lens will perform better than a single layered lens. Being “better” depends upon the maker’s lens treatment techniques and the quality of products used in building the rifle glass.
Hydrophobic Rifle Optic Lens Covering
Water on a lens does not help with maintaining a clear sight picture through a scope at all. Numerous top of the line and high-end scope companies will coat their lenses with a hydrophobic or hydrophilic covering.
Alternatives for Installing Rifle Glass on Firearms
Installing options for scopes are available in a couple of options. There are the standard scope rings which are individually installed to the optic and one-piece scope mounts which cradle the scope. These different kinds of mounts also normally can be found in quick release variations which use manual levers which permit rifle shooters to quickly install and remove the optics.
Hex Key Rifle Scope Rings
Standard, clamp style mounting scope rings use hex head screws to mount to the flattop design Picatinny scope installation rails on rifles. These types of scope mounts use a couple of separate rings to support the optic, and are often made from 7075 T6 billet aluminum which is created for long range accuracy shooting. This type of scope install is perfect for rifles which require a resilient, sound mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Rifle Optic Rings
These types of quick-release rifle scope mounts can be used to quickly detach a scope and connect it to a different rifle. Multiple scopes can even be swapped out if they all use a similar style mount. These types of mounts come in handy for long guns which are carried a lot, to remove the optic from the rifle for protecting the scope, or for optics which are used in between several rifles.
Sealing and Gas Purging for Rifle Optic Tubes
Wetness inside your rifle scope can destroy a day of shooting and your costly optic by bringing about fogging and creating residue inside of the scope tube. A lot of scopes prevent wetness from going into the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Glass Tubes
Another component of preventing the accumulation of moisture inside of the rifle scope tube is filling the tube with a gas like nitrogen. Because this space is currently occupied by the gas, the glass is less impacted by temperature level shifts and pressure distinctions from the outside environment which may potentially allow water vapor to seep in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a decent rifle scope to seek out.
