Is It Possible To Change The Reticle On A Spotting Scope
A 100mm spotting telescopic with a paraxial 30mm finderscope
A spotter (right) uses a spotting scope to help a marksman. Spotting scopes are used on target ranges to avoid walking to the target to verify the placement of hits.
A spotting scope is a compact high-power telescope optimized for detailed ascertainment of distant objects. They are used as portable optical enhancement devices for various outdoor activities such as birdwatching, skygazing and other naturalist activities, for hunting and target shooting to verify a marksman's shot placements, for tactical ranging and surveillance, and for any other awarding that requires college magnification than ordinary binoculars (typically twenty× to sixty×).
The light-gathering power and resolution of a spotting scope is adamant past the diameter of the objective lens, typically between l and lxxx mm (2.0 and 3.1 in). The larger the objective, the more massive and expensive the telescope.
The optical assembly has a small refracting objective lens, an internal image-erecting system, and an eyepiece that is usually removable. The image-erecting system may use relay lenses, prisms such as Porro or roof prisms, or a catadioptric system of the Schmidt or Maksutov blueprint. Spotting scopes may have a ruggedized design, a mounting interface for attaching to a tripod, and an ergonomically designed and located control knob for focus adjustment. Some spotting scopes likewise have in-built reticles for stadiametric rangefinding.
Spotting scope eyepieces are ordinarily interchangeable to adapt for different magnifications, or may have variable zoom to give a range of magnifications. Magnifications less than 20× are unusual, as are magnifications more 60× since the latter can atomic number 82 to poorer image brightness, a narrow field of view and also much prototype shaking, even on a tripod. The eyepiece mount layout tin be "straight-through" (the eyepiece is on the same axis as the scope body), or "angled" (the eyepiece is at an bending to the scope body—ordinarily 45 degrees).
The loftier magnification of spotting scopes makes them decumbent to image disturbance from vibrations, then they are often stabilized with tripods or (less ordinarily) monopods, which provide a stationary and steady platform. Tripod heads tin can be used to command any required movements of the scope.
Run across also [edit]
- Milliradian, an athwart measurement used in reticled scopes intended for precision shooting
- Digiscoping, long-range videography using a spotting scope with a digital video recorder mounted to the eyepiece
- List of telescope types
References [edit]
External links [edit]
- Birding Scopes
- Ask-a-Biologist - Advanced Birders Guide - Spotting Scopes
Source: https://en.wikipedia.org/wiki/Spotting_scope
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