Which famous observatory first pioneered the now-industry-standard practice of creating a distinctive logo featuring its main telescope silhouette, launching astronomy's modern branding era?

The astronomy industry has seen tremendous growth in public engagement through innovative brand strategies. Observatories around the world have transformed from purely scientific institutions to educational destinations with distinct brand identities. This poll tests your knowledge about how major observatories have developed their public image and brand recognition to engage with astronomy enthusiasts and the general public.

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Palomar Observatory (California, 1948)
Griffith Observatory (California, 1962)
Royal Greenwich Observatory (UK, 1957)
Mount Wilson Observatory (California, 1970)