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by Wistar
1135 days ago
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From the 2019 BH Photo article whose link I posted above: "Cost has long been a factor in the acquisition of an OM projector. The Zeiss Model II cost $75,000 in 1926—more than $1 million in today’s dollars. Modern OM projectors can cost well over $2 million." A 2011 Sky and Telescope article about Boston's Planetarium says, "Costing $2 million, the Zeiss Starmaster installed at Boston's Charles Hayden Planetarium uses fiber optics and its lens-covered 30-inch ball to project up to 9,100 stars." https://skyandtelescope.org/astronomy-news/bostons-planetari... |
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