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Bilder Videos

Refraktor Bilder ❘ Science Photo Library

Refracting telescope on tripod — 13474250 - Refracting telescope on tripod

36 inch telescope at the Lick Observatory, USA — 13452405 - 36 inch telescope at the Lick Observatory, USA

Refracting telescope on tripod — 13474245 - Refracting telescope on tripod

Amateur astronomer, illustration — 13403170 - Amateur astronomer, illustration

Astronomer observing in Moonlight — 13273216 - Astronomer observing in Moonlight

Astronomer observing in Moonlight — 13273217 - Astronomer observing in Moonlight

Eye test — 13676408 - Eye test

Lick observatory, Mount Hamilton, CA — 13502274 - Lick observatory, Mount Hamilton, CA

Hevelius' 150-foot telescope, 1674 — 13502245 - Hevelius' 150-foot telescope, 1674

Hevelius' 150-foot telescope, 1673 — 13502244 - Hevelius' 150-foot telescope, 1673

Hall's discovery of the moons of Mars, 1877 — 12347494 - Hall's discovery of the moons of Mars, 1877

Detection and treatment of keratoconus — 12287291 - Detection and treatment of keratoconus

Meudon Grand Lunette observatory — 11710684 - Meudon Grand Lunette observatory

US Naval Observatory refractor telescope, 19th century — 12347493 - US Naval Observatory refractor telescope, 19th century

Refracting telescope — 11712267 - Refracting telescope

Refracting telescope — 11712265 - Refracting telescope

Newton on telescopes,18th century — 11672632 - Newton on telescopes,18th century

Lick Observatory telescope,1887 — 11713044 - Lick Observatory telescope,1887

Mars,early 20th century illustration — 11714543 - Mars,early 20th century illustration

Refractor astrograph telescope — 11686040 - Refractor astrograph telescope

Hevelius' 150-foot telescope,artwork — 11689114 - Hevelius' 150-foot telescope,artwork

Alvan Clark and Yerkes 40-inch lens,1897 — 11688805 - Alvan Clark and Yerkes 40-inch lens,1897

Refracting telescope,artwork — 11656331 - Refracting telescope,artwork

Dyslexia centre — 12251832 - Dyslexia centre

Refracting telescope — 11712266 - Refracting telescope

Eye Examination,illustration — 12043478 - Eye Examination,illustration

Mars,early 20th century illustration — 11714542 - Mars,early 20th century illustration

Telescope and Orion nebula — 11705218 - Telescope and Orion nebula

Boy Looking Through Telescope — 12449147 - Boy Looking Through Telescope

Boy observing space, illustration — 12495537 - Boy observing space, illustration

7.25-inch telescope,Sydney Observatory — 11637126 - 7.25-inch telescope,Sydney Observatory

Eye test equipment — 11628550 - Eye test equipment

Dyslexia centre — 12251833 - Dyslexia centre

Artwork of a Star Party — 12449143 - Artwork of a Star Party

Woman having eye examination — 12350483 - Woman having eye examination

Crossley Observatory,19th century — 11696982 - Crossley Observatory,19th century

Old observatory building,Poland — 11686039 - Old observatory building,Poland

Westgate-on-Sea Observatory,1890 — 11602159 - Westgate-on-Sea Observatory,1890

Eye Examination,illustration — 12043477 - Eye Examination,illustration

Eye examination — 11849519 - Eye examination

Lowell Observatory telescope — 11571852 - Lowell Observatory telescope

6-inch Grubb refractor,19th century — 11602219 - 6-inch Grubb refractor,19th century

Newton's catadioptric telescope,1672 — 11653755 - Newton's catadioptric telescope,1672

Telescope at Yerkes Observatory,USA — 11879883 - Telescope at Yerkes Observatory,USA

Chamberlin Observatory,Denver,USA — 11879670 - Chamberlin Observatory,Denver,USA

Eye examination — 11849602 - Eye examination

Historical ophthalmology refractor — 11638690 - Historical ophthalmology refractor

Artwork of a Star Party — 12449128 - Artwork of a Star Party

Hevelius' 150-foot telescope,1673 — 11879930 - Hevelius' 150-foot telescope,1673

Strasbourg Observatory,France — 11879651 - Strasbourg Observatory,France

Telescope at the Lick Observatory,USA — 11879870 - Telescope at the Lick Observatory,USA

Lick Observatory telescope,1889 — 11649438 - Lick Observatory telescope,1889

Elizabeth Brown,English astronomer — 11827619 - Elizabeth Brown,English astronomer

15-inch Cooke refractor,19th century — 11602224 - 15-inch Cooke refractor,19th century

USNO Great Equatorial dome — 11588134 - USNO Great Equatorial dome

Refractor telescope,artwork — 11565433 - Refractor telescope,artwork

Eye examination — 11849618 - Eye examination

George Bishop's observatory,artwork — 11602133 - George Bishop's observatory,artwork

Astronomer — 11563251 - Astronomer

Washburn Observatory,Wisconsin,USA — 11879658 - Washburn Observatory,Wisconsin,USA

Eye examination — 11849559 - Eye examination

Refracting telescope,artwork — 11656080 - Refracting telescope,artwork

Refraction eye test equipment — 11628542 - Refraction eye test equipment

Refraction eye test equipment — 11628543 - Refraction eye test equipment

Nice observatory,France,19th century — 11628253 - Nice observatory,France,19th century

Lowell Observatory telescope — 11879896 - Lowell Observatory telescope

The Grubb refractor at old Greenwich Observatory — 11879579 - The Grubb refractor at old Greenwich Observatory

Great Equatorial telescope,Greenwich — 11905135 - Great Equatorial telescope,Greenwich

Fraunhofer telescope,1820s — 11879926 - Fraunhofer telescope,1820s

Eye examination — 11849600 - Eye examination

Eye examination — 11849619 - Eye examination

Shuckburgh telescope — 11879886 - Shuckburgh telescope

Eye examination equipment — 11849592 - Eye examination equipment

Refracting telescope,artwork — 11656094 - Refracting telescope,artwork

Telescope eyepiece,Hem Observatory — 11637130 - Telescope eyepiece,Hem Observatory

Eye test equipment — 11628541 - Eye test equipment

Telescope equipment,1903 — 11600608 - Telescope equipment,1903

40 inch telescope,Yerkes Observatory — 11568381 - 40 inch telescope,Yerkes Observatory

11.5-inch telescope,Sydney Observatory — 11637125 - 11.5-inch telescope,Sydney Observatory

Eye examination — 11628546 - Eye examination

Eye examination — 11849578 - Eye examination

Eye examination: woman looks through a refractor — 11849506 - Eye examination: woman looks through a refractor

Sheepshanks telescope,Cambridge — 11879911 - Sheepshanks telescope,Cambridge

Eye examination — 11849620 - Eye examination

Lick observatory,Mount Hamilton,CA — 12013878 - Lick observatory,Mount Hamilton,CA

Eye examination — 11849601 - Eye examination

Eye examination: woman looks through a refractor — 11849507 - Eye examination: woman looks through a refractor

USNO Great Equatorial telescope — 11588042 - USNO Great Equatorial telescope

USNO Great Equatorial telescope — 11588058 - USNO Great Equatorial telescope

Grubb refractor telescope,Vienna — 11879892 - Grubb refractor telescope,Vienna

Flower Observatory 18-inch telescope — 11588055 - Flower Observatory 18-inch telescope

15-inch telescope,Dunecht Observatory — 11879916 - 15-inch telescope,Dunecht Observatory

Regents Park observatory,19th century — 11879663 - Regents Park observatory,19th century

Cross-section of the Dunsink observatory in Dublin — 11879601 - Cross-section of the Dunsink observatory in Dublin

Amateur astronomy,computer artwork — 11879979 - Amateur astronomy,computer artwork

Plate holder at the Lick Observatory,USA — 11879873 - Plate holder at the Lick Observatory,USA

Strasbourg Observatory,France — 11879653 - Strasbourg Observatory,France

Strasbourg Observatory,France — 11879652 - Strasbourg Observatory,France

Astronomer using a refractor telescope — 11879944 - Astronomer using a refractor telescope

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