#  About the Glass Plates 

 



 Find out more about the instruments and observatories that created [Harvard's Astronomical Photographic Glass Plate Collection](/plate-stacks).

- [Plate Series](/plate-series)
- [Plate Classes](/plate-classes)
- [Browse Telescopes](/dasch-telescopes)
- [Browse Observatories](/dasch-observatories)
- ![Black and white photo of the interior of a building housing a large telescope.](/sites/g/files/omnuum2761/files/Aseries9.jpg)
    
     
    
    The 24 inch Bruce Doublet at the Harvard Boyden Station in Arequipa, Peru.