Where is the world's longest lenticular telescope?

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In Norway
Big Spotlight - the world's longest 21-meter-long lens telescope. It is located in the astronomical observatory in Berlin.
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In Germany
In France
In Spain
In Norway
answers
flagGreece
66%
11%
11%
11%
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flagAustralia
65%
7%
7%
15%
26
flagthe United States
57%
15%
8%
17%
146
flagFrance
57%
28%
0%
14%
14
flagthe Philippines
50%
16%
27%
0%
18
flagItaly
50%
30%
20%
0%
10
flagIndia
49%
19%
12%
16%
242
flagSwitzerland
46%
19%
7%
26%
26
flagGermany
42%
11%
17%
28%
266
flagPoland
39%
20%
11%
27%
3604
flagthe United Kingdom
37%
12%
19%
28%
98
flagCanada
36%
18%
18%
27%
11
flagthe Netherlands
34%
17%
8%
34%
23
flagPakistan
33%
20%
20%
26%
15
flagRepublic of Ireland
27%
18%
0%
54%
11
flagAustria
24%
17%
20%
37%
45