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As you can see in this picture from April 24, 1936 there were a number of large defects in the surface of the glass. It was the optician's job to grind past the surface defects before the process of placing the f/3.3 curve to the surface.
Palomar Skies a blog with news and information about the Palomar Observatory. Postings here will cover current research, history and public outreach events taking place at the observatory.
1 comment:
What a great photo! It still has its lifting brackets from the train ride attached.
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