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Cardboard round section telescope with four extensions and brass ferrules
$1,866.49
£1,380.97
€1,550
CA$2,580.75
A$2,833.34
CHF 1,478.16
MX$34,287.42
NOK 18,526.47
SEK 17,456.80
DKK 11,801.74
About the Item
Rare round cardboard scope with four extensions and brass ferrules, german manufacture from the early 19th century. Excellent state of conservation.
Maximum length cm 95 - 37.4 in, minimum cm 27.5 - 10.9 in, focal diameter cm 3 - 1.2 in.
Complete with base for support made of custom-made wood and brass.
The last photo is the gift box.
To bring the scope into focus, you have to elongate it according to the mark on each tube and then slowly shorten the last elongation, the smallest one, until the image is in focus.
Curiosity
Secondo la leggenda, un giorno imprecisato del 1608 i figli di Hans Lipperhey, che era un occhialaio di Middelburg , stavano giocando nel laboratorio del padre con delle lenti. When one of the sons put a concave lens next to his own eye, holding a convex lens in his other hand, and reaching out his arm in the direction of the tip of the cathedral bell tower he looked through it, he saw the wind-marking rooster at the top grow larger and closer. Immediately showing the phenomenon to his father, he fixed the lenses on a plank to make observation easier, thus creating the first rudimentary telescope.
Galilei never claimed the invention of the telescope, but della Porta, feeling defrauded of the invention, wrote in a letter to Federico Cesi in 1609: "...of the secret of the telescope I have seen it et it is a coglioneria, et it is taken from my book IX De Refractione..." Indirectly disproving della Porta, when Galilei showed the telescope to some senators of the Venetian Republic, the astonishment it aroused was enormous.
- Dimensions:Height: 37.4 in (95 cm)Diameter: 1.2 in (3.05 cm)
- Materials and Techniques:
- Period:
- Date of Manufacture:1800
- Condition:Wear consistent with age and use.
- Seller Location:Milan, IT
- Reference Number:1stDibs: LU1020246064452
About the Seller
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