Refractor Telescope Lenses

Refractor Telescope Lenses. By Detlev Wieseltier, 4 February, 2018 05:40:08.

Apm 140 ed doublet refractor telescope fpl53 glass

Apm 140 ed doublet refractor telescope fpl53 glass


Für jeden Entfernungsbereich werden geeignete Messmittel benötigt. Im Folgenden wird ein Überblick über die verschiedenen Anwendungen der Entfernungsmessung gegeben.

Bereits im Altertum wurde die Triangulation zur Landvermessung eingesetzt und wird bis auf technische Neuerungen auch heute noch dafür verwendet. Hinzugekommen sind Verfahren der optischen Messtechnik wie die Streifenprojektion und die Photogrammetrie, die andere Anwendungsbereiche erschlossen haben.

Mit Radarwellen können Entfernungen zwischen wenigen Zentimetern und mehreren Millionen Kilometern gemessen werden, weshalb sie häufig in der Luftfahrt eingesetzt werden. Die Antenne sendet kurze Impulse bei einer Frequenz von einigen Gigahertz (109 Hertz) und misst die Zeit bis zum Empfang des vom Messobjekt reflektierten Signals. Neben der Entfernung können auch noch die Geschwindigkeit und die Richtung des Objektes gemessen werden.

Für Entfernungen über 1 Zettameter (rund 100 000 Lichtjahre), jenseits der Milchstraße, benutzen die Astronomen die fotometrische Parallaxe. Um diese Verfahren zu kalibrieren, werden sogenannte „Standardkerzen“ verwendet. Das sind Sterne, die eine bekannte absolute Helligkeit besitzen, aus der sich dann durch Messung der scheinbaren Helligkeit die Entfernung bestimmen lässt. Bekannt ist die absolute Helligkeit beispielsweise bei den Cepheiden, da bei ihnen die so genannte Perioden-Leuchtkraft-Beziehung besteht.

Best refractor telescope: reviews on top products on the market

Best refractor telescope: reviews on top products on the market


Telephoto vs telescope infrared conversions ir modifications

Telephoto vs telescope infrared conversions ir modifications


Robs telescope page

Robs telescope page


Mt. hamilton telescopes: great lick 36 inch refractor

Mt. hamilton telescopes: great lick 36 inch refractor


Orion eon 104mm ed x2 f 6.25 triplet apo refractor telescope

Orion eon 104mm ed x2 f 6.25 triplet apo refractor telescope


Ts photoline 60mm f 5.5 apo travel scope u2013 astronomy now

Ts photoline 60mm f 5.5 apo travel scope u2013 astronomy now


Triplet refractor collimation and lens centering atm optics and

Triplet refractor collimation and lens centering atm optics and


Blender two lens refractor telescope demo youtube

Blender two lens refractor telescope demo youtube


Telescope and astronomy stuff astroboot

Telescope and astronomy stuff astroboot


Guide to beginner intermediate advanced and expert astronomical

Guide to beginner intermediate advanced and expert astronomical


Galileo refractor telescope 1.25in 6mm eyepiece 20mm eyepiece 50

Galileo refractor telescope 1.25in 6mm eyepiece 20mm eyepiece 50


Dick parkers telescope mirror workshop: refractor telescope project

Dick parkers telescope mirror workshop: refractor telescope project


The irving porter church telescope

The irving porter church telescope


Sky watcher evostar 72ed ds pro refractor telescope review bbc sky

Sky watcher evostar 72ed ds pro refractor telescope review bbc sky


6 inch jaegers refractor telescope al paslow

6 inch jaegers refractor telescope al paslow


Refractor telescope with tripod 50x 100x vivitar ebay

Refractor telescope with tripod 50x 100x vivitar ebay


Celestron explorascope 70az celestron 70mm refractor telescope

Celestron explorascope 70az celestron 70mm refractor telescope


Cff telescopes premier 200mm f8 oil spaced triplet apochromatic

Cff telescopes premier 200mm f8 oil spaced triplet apochromatic


Celestron 70mm x 900mm refractor telescope lens set 900mm f l

Celestron 70mm x 900mm refractor telescope lens set 900mm f l


What is the difference between refractor and reflector telescopes

What is the difference between refractor and reflector telescopes


Stellarvue 50 mm little rascal telescope

Stellarvue 50 mm little rascal telescope


Teleskop express: cff telescopes 132 mm f 6.9 triplet apo 3

Teleskop express: cff telescopes 132 mm f 6.9 triplet apo 3


Primaluce lab airy apo104t 104mm f 6.25 apochromatic quintuplet

Primaluce lab airy apo104t 104mm f 6.25 apochromatic quintuplet


Meade 70az adr refractor telescope 70mm 04054 w tripod eyepieces

Meade 70az adr refractor telescope 70mm 04054 w tripod eyepieces


Homemade telescope. how to make telescope refractor. diy telescope

Homemade telescope. how to make telescope refractor. diy telescope


Vintage micronta d=50. f=500 refractor telescope w lenses tripod

Vintage micronta d=50. f=500 refractor telescope w lenses tripod


Telescopes ireland astronomy dublin telescopes reflector telescopes

Telescopes ireland astronomy dublin telescopes reflector telescopes


Anatomy of a refractor telescope

Anatomy of a refractor telescope


Visionking 70350cf refractor astronomical telescope k9mm 40x k25mm

Visionking 70350cf refractor astronomical telescope k9mm 40x k25mm


Altair starwave 110ed v2 refractor telescope

Altair starwave 110ed v2 refractor telescope


Celestron powerseeker 70eq telescope #21037 ozscopes

Celestron powerseeker 70eq telescope #21037 ozscopes


Levenhuk skyline 70mm refractor telescope

Levenhuk skyline 70mm refractor telescope


Sky watcher esprit 120ed pro super apo triplet refractor telescope

Sky watcher esprit 120ed pro super apo triplet refractor telescope


Altair 60 edf doublet refractor telescope rother valley optics ltd

Altair 60 edf doublet refractor telescope rother valley optics ltd


Company seven televue pronto telescope

Company seven televue pronto telescope


Everything you need to know before buying a telescope b&h explora

Everything you need to know before buying a telescope b&h explora


Refractor telescope 50x 100x in fulham london gumtree

Refractor telescope 50x 100x in fulham london gumtree


D.i.y. refractor telescope distantfuturejosh

D.i.y. refractor telescope distantfuturejosh


Refractor telescope w zoom lens kogan.com

Refractor telescope w zoom lens kogan.com


150mm diameter f 17 pcx lens 2600mm fl

150mm diameter f 17 pcx lens 2600mm fl


Vixen telescope sd81s optical tube assembly vixen

Vixen telescope sd81s optical tube assembly vixen


Bresser classic 60 900 az refractor telescope bresser

Bresser classic 60 900 az refractor telescope bresser


6 inch jaegers refractor telescope al paslow

6 inch jaegers refractor telescope al paslow


Zhumell 60mm az refractor telescope zhun001 1 telescopes at

Zhumell 60mm az refractor telescope zhun001 1 telescopes at


Company seven unitron model 132 4 inch 102mm achromatic

Company seven unitron model 132 4 inch 102mm achromatic


Diy small scope improvements

Diy small scope improvements


Telescopes to help you touch the stars b&h explora

Telescopes to help you touch the stars b&h explora


Cff telescopes premier 160mm f6.5 oil spaced triplet apochromatic

Cff telescopes premier 160mm f6.5 oil spaced triplet apochromatic


Saxon saxon 80mm apochromatic fcd100 air spaced ed triplet

Saxon saxon 80mm apochromatic fcd100 air spaced ed triplet


Amazon.com : bushnell 78 9512 deep space 420 x 60mm refractor

Amazon.com : bushnell 78 9512 deep space 420 x 60mm refractor


Stellarvue sv80st is imaging refractor telescope system buy telescopes

Stellarvue sv80st is imaging refractor telescope system buy telescopes


Refractor telescope w zoom lens kogan.com

Refractor telescope w zoom lens kogan.com


Altair astro starwave travel 70mm edt r refractor review bbc sky

Altair astro starwave travel 70mm edt r refractor review bbc sky


Projectiontv lens as refractor? atm optics and diy forum cloudy

Projectiontv lens as refractor? atm optics and diy forum cloudy


Celestron explorascope 80az refractor telescope 22102 telescopes

Celestron explorascope 80az refractor telescope 22102 telescopes


Astro blog delta « planetary shootout: jupiter with refractor

Astro blog delta « planetary shootout: jupiter with refractor


Tasco galaxsee 525x telescope refractor lenses 525 power scope

Tasco galaxsee 525x telescope refractor lenses 525 power scope


Homemade refractor telescope diy focuser eyepiece adapter binoviewer

Homemade refractor telescope diy focuser eyepiece adapter binoviewer


High quality 154mm objective lens support pressure ring for

High quality 154mm objective lens support pressure ring for


Orion 09565 eon 130mm ed triplet apochromatic refractor telescope

Orion 09565 eon 130mm ed triplet apochromatic refractor telescope


Altair wave series 152 f8 ed triplet apo refractor telescope

Altair wave series 152 f8 ed triplet apo refractor telescope


Astronomy for kids best telescopes for children and teens

Astronomy for kids best telescopes for children and teens


Choosing your first telescope u2013 dark site finder

Choosing your first telescope u2013 dark site finder


Make a refractor telescope activities unawe

Make a refractor telescope activities unawe


Diy super mini telescope how to make at home homemade refractor

Diy super mini telescope how to make at home homemade refractor


Lzos apochromates

Lzos apochromates


Amazon.com : sky watcher proed 100mm doublet apo refractor telescope

Amazon.com : sky watcher proed 100mm doublet apo refractor telescope


Telescope and astronomy stuff astroboot

Telescope and astronomy stuff astroboot


Inspire 70az refractor telescope celestron telescopes telescope

Inspire 70az refractor telescope celestron telescopes telescope


Cff telescopes premier 105mm oil spaced triplet apochromatic refractor

Cff telescopes premier 105mm oil spaced triplet apochromatic refractor


A quick guide to the best refractor telescopes on the uk market

A quick guide to the best refractor telescopes on the uk market


Refractor telescope w zoom lens kogan.com

Refractor telescope w zoom lens kogan.com


My homemade refractor amateur telescope making atm articles

My homemade refractor amateur telescope making atm articles


How to use a meade telescope sciencing

How to use a meade telescope sciencing


365astronomy 80 600mm f 7.5 imaging achromatic refractor telescope

365astronomy 80 600mm f 7.5 imaging achromatic refractor telescope


Aomekie telescope for kids adults and astronomy beginners 70mm

Aomekie telescope for kids adults and astronomy beginners 70mm


National geographic 60 800 refractor telescope az bresser

National geographic 60 800 refractor telescope az bresser


Anatomy of a refractor telescope

Anatomy of a refractor telescope


Amazon.com : vivitar tel50600 60x 120x telescope refractor with

Amazon.com : vivitar tel50600 60x 120x telescope refractor with


My homemade refractor amateur telescope making atm articles

My homemade refractor amateur telescope making atm articles


Classification of telescopes u2013 the blog formerly known as mcwiki

Classification of telescopes u2013 the blog formerly known as mcwiki


Camera museum microscopes and telescopes

Camera museum microscopes and telescopes


Stellarvue access 125mm super ed apo refractor telescope sv125 access

Stellarvue access 125mm super ed apo refractor telescope sv125 access


Altair starwave 70 ed triplet apo travel refractor rother valley

Altair starwave 70 ed triplet apo travel refractor rother valley


A prinz astral 400 refractor telescope with tripod eye piece

A prinz astral 400 refractor telescope with tripod eye piece


Optical telescopes telescopes that detect light waves from stars

Optical telescopes telescopes that detect light waves from stars


Starwave 102 ed doublet refractor telescope

Starwave 102 ed doublet refractor telescope


Celestron powerseeker2 70 refractor telescope w tri ocular eyepiece

Celestron powerseeker2 70 refractor telescope w tri ocular eyepiece


Altair 60 edf doublet refractor telescope

Altair 60 edf doublet refractor telescope


400x70mm refractor astronomical telescope eyepieces w tripod for

400x70mm refractor astronomical telescope eyepieces w tripod for



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