File:Museo della Specola di Bologna abc9 specchio del telescopio riflettore Zeiss.jpg

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Italiano: Specchio del telescopio riflettore Zeiss con diametro di 60cm, lunghezza focale 210cm e F/3,5. Karl Zeiss, Jena, 1932-33. Esposto al Museo della Specola di Bologna, un museo specializzato nello sviluppo e nell'evoluzione della strumentazione astronomica tra Settecento e Ottocento.
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