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- Q1752914 subject Q7010353.
- Q1752914 subject Q8952855.
- Q1752914 abstract "A spotting scope is a small portable telescope with added optics to present an erect image, optimized for the observation of terrestrial objects. They are used for birdwatching and other naturalist activities, for hunting, verifying a marksman's shots, surveillance, and for any other application that requires more magnification than a pair of binoculars, typically on the order of 20× to 60×. The light-gathering power and resolution of a spotting scope is determined by the diameter of the objective lens, typically between 50 and 80 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 image erecting system that uses either image erecting relay lenses or prisms (Porro prisms or roof prisms), and an eyepiece that is usually removable and interchangeable to give different magnifications. Other telescope designs are used such as Schmidt and Maksutov optical assemblies. They may have a ruggedised design, a mounting for attaching to a tripod, and an ergonomically designed and located knob for focus control. Eyepieces are usually interchangeable to give different magnifications, or may consist of a single variable "zoom" eyepiece to give a range of magnifications. Magnifications of less than 20× are unusual, as are magnifications of more than 60× since it can lead to poorer image brightness, a narrow field of view, and show too much image shake, even on a tripod. The eyepiece mount layout can be "straight-through" (the eyepiece is on the same axis as the body of the scope), or "angled" (the eyepiece is at an angle of about 45 degrees to the body of the scope).".
- Q1752914 thumbnail Yukon_spotting_scope.jpg?width=300.
- Q1752914 wikiPageExternalLink advanced_birders_guide_5.pdf.
- Q1752914 wikiPageExternalLink birding_optics_spotting_scopes.htm.
- Q1752914 wikiPageWikiLink Q102626.
- Q1752914 wikiPageWikiLink Q1076893.
- Q1752914 wikiPageWikiLink Q1115145.
- Q1752914 wikiPageWikiLink Q1205220.
- Q1752914 wikiPageWikiLink Q1444534.
- Q1752914 wikiPageWikiLink Q1750812.
- Q1752914 wikiPageWikiLink Q1886563.
- Q1752914 wikiPageWikiLink Q1898382.
- Q1752914 wikiPageWikiLink Q193516.
- Q1752914 wikiPageWikiLink Q210440.
- Q1752914 wikiPageWikiLink Q216778.
- Q1752914 wikiPageWikiLink Q334401.
- Q1752914 wikiPageWikiLink Q35273.
- Q1752914 wikiPageWikiLink Q36963.
- Q1752914 wikiPageWikiLink Q3880557.
- Q1752914 wikiPageWikiLink Q4213.
- Q1752914 wikiPageWikiLink Q484591.
- Q1752914 wikiPageWikiLink Q5385398.
- Q1752914 wikiPageWikiLink Q675287.
- Q1752914 wikiPageWikiLink Q685629.
- Q1752914 wikiPageWikiLink Q7010353.
- Q1752914 wikiPageWikiLink Q8952855.
- Q1752914 wikiPageWikiLink Q986547.
- Q1752914 comment "A spotting scope is a small portable telescope with added optics to present an erect image, optimized for the observation of terrestrial objects. They are used for birdwatching and other naturalist activities, for hunting, verifying a marksman's shots, surveillance, and for any other application that requires more magnification than a pair of binoculars, typically on the order of 20× to 60×.".
- Q1752914 label "Spotting scope".
- Q1752914 depiction Yukon_spotting_scope.jpg.