View Full Version : Calling All Volunteers to Help Digitize History

2014-Sep-12, 05:20 PM
An old brick building on Harvardís Observatory Hill is overflowing with rows of dark green cabinets ó each one filled to the brim with hundreds of astronomical glass plates in paper sleeves: old-fashioned photographic negatives of the night sky. All in all there are more than 500,000 plates preserving roughly a century of information about […]

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