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Practical Talks by an Astronomer ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

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266,586 braille cells · 282 embossed pages at 40×25 · 728 unrepresentable characters omitted

⠎⠊⠛⠝⠁⠇⠇⠽⠀⠞⠗⠊⠥⠍⠏⠓⠁⠝⠞⠂⠀⠀⠋⠕⠗⠀⠞⠓⠑⠀⠏⠇⠁⠝⠑⠞⠀⠺⠁⠎
⠀⠁⠉⠞⠥⠁⠇⠇⠽⠀⠋⠕⠥⠝⠙⠀⠊⠝⠀⠞⠓⠑⠀⠏⠕⠎⠊⠞⠊⠕⠝⠀
⠏⠗⠑⠙⠊⠉⠞⠑⠙⠀⠃⠽⠀⠓⠊⠍⠂⠀⠀⠁⠎⠀⠎⠕⠕⠝⠀⠁⠎⠀⠁⠀⠉⠓⠁⠝⠛⠑⠀
⠊⠝⠀⠞⠓⠑⠀⠗⠑⠇⠁⠞⠊⠧⠑⠀⠏⠇⠁⠉⠑⠎⠀⠕⠋⠀⠞⠓⠑⠀⠏⠇⠁⠝⠑⠞⠀⠁⠝⠙
⠀⠑⠁⠗⠞⠓⠀⠀⠏⠑⠗⠍⠊⠞⠞⠑⠙⠀⠎⠥⠊⠞⠁⠃⠇⠑⠀⠕⠃⠎⠑⠗⠧⠁⠞⠊⠕⠝⠎⠀
⠞⠕⠀⠃⠑⠀⠍⠁⠙⠑⠲⠀⠀⠀⠀⠠⠃⠥⠞⠀⠁⠋⠞⠑⠗⠀⠁⠇⠇⠂⠀⠠⠏⠊⠁⠵⠵⠊⠄⠎
⠀⠏⠇⠁⠝⠑⠞⠀⠃⠑⠇⠕⠝⠛⠎⠀⠞⠕⠀⠁⠀⠉⠇⠁⠎⠎⠀⠕⠋⠀⠟⠥⠊⠞⠑⠀
⠎⠍⠁⠇⠇⠀⠀⠃⠕⠙⠊⠑⠎⠂⠀⠁⠝⠙⠀⠊⠎⠀⠃⠽⠀⠝⠕⠀⠍⠑⠁⠝⠎⠀⠁⠎⠀
⠊⠝⠞⠑⠗⠑⠎⠞⠊⠝⠛⠀⠁⠎⠀⠠⠓⠑⠗⠎⠉⠓⠑⠇⠄⠎⠀⠙⠊⠎⠉⠕⠧⠑⠗⠽⠂⠀⠀
⠠⠥⠗⠁⠝⠥⠎⠲⠀⠠⠽⠑⠞⠀⠑⠧⠑⠝⠀⠞⠓⠊⠎⠀⠍⠥⠎⠞⠀⠃⠑⠀
⠗⠑⠇⠑⠛⠁⠞⠑⠙⠀⠞⠕⠀⠎⠑⠉⠕⠝⠙⠀⠗⠁⠝⠅⠀⠁⠍⠕⠝⠛⠀⠀
⠏⠇⠁⠝⠑⠞⠁⠗⠽⠀⠙⠊⠎⠉⠕⠧⠑⠗⠊⠑⠎⠲⠀⠠⠕⠝⠀⠠⠎⠑⠏⠞⠑⠍⠃⠑⠗⠀
⠼⠃⠉⠂⠀⠼⠁⠓⠙⠋⠂⠀⠞⠓⠑⠀⠞⠑⠇⠑⠎⠉⠕⠏⠑⠀⠕⠋⠀⠞⠓⠑⠀⠀
⠠⠃⠑⠗⠇⠊⠝⠀⠠⠕⠃⠎⠑⠗⠧⠁⠞⠕⠗⠽⠀⠺⠁⠎⠀⠙⠊⠗⠑⠉⠞⠑⠙⠀⠞⠕⠀⠁⠀
⠉⠑⠗⠞⠁⠊⠝⠀⠏⠕⠊⠝⠞⠀⠕⠝⠀⠞⠓⠑⠀⠎⠅⠽⠀⠋⠕⠗⠀⠁⠀⠀⠧⠑⠗⠽⠀
⠎⠏⠑⠉⠊⠁⠇⠀⠗⠑⠁⠎⠕⠝⠲⠀⠠⠛⠁⠇⠇⠑⠂⠀⠞⠓⠑⠀⠁⠎⠞⠗⠕⠝⠕⠍⠑⠗⠀
⠕⠋⠀⠠⠃⠑⠗⠇⠊⠝⠂⠀⠓⠁⠙⠀⠗⠑⠉⠑⠊⠧⠑⠙⠀⠀⠁⠀⠇⠑⠞⠞⠑⠗⠀⠋⠗⠕⠍⠀
⠠⠇⠑⠧⠑⠗⠗⠊⠑⠗⠂⠀⠕⠋⠀⠠⠏⠁⠗⠊⠎⠂⠀⠞⠑⠇⠇⠊⠝⠛⠀⠓⠊⠍⠀⠞⠓⠁⠞⠀
⠊⠋⠀⠓⠑⠀⠺⠕⠥⠇⠙⠀⠀⠇⠕⠕⠅⠀⠊⠝⠀⠁⠀⠉⠑⠗⠞⠁⠊⠝⠀⠙⠊⠗⠑⠉⠞⠊⠕⠝
⠀⠓⠑⠀⠺⠕⠥⠇⠙⠀⠙⠑⠞⠑⠉⠞⠀⠁⠀⠝⠑⠺⠀⠁⠝⠙⠀⠇⠁⠗⠛⠑⠀⠏⠇⠁⠝⠑⠞⠲
⠀⠀⠀⠀⠠⠇⠑⠧⠑⠗⠗⠊⠑⠗⠄⠎⠀⠊⠝⠋⠕⠗⠍⠁⠞⠊⠕⠝⠀⠺⠁⠎⠀⠃⠁⠎⠑⠙⠀
⠥⠏⠕⠝⠀⠁⠀⠍⠁⠞⠓⠑⠍⠁⠞⠊⠉⠁⠇⠀⠉⠁⠇⠉⠥⠇⠁⠞⠊⠕⠝⠲⠀⠀
⠠⠎⠑⠁⠞⠑⠙⠀⠊⠝⠀⠓⠊⠎⠀⠎⠞⠥⠙⠽⠂⠀⠺⠊⠞⠓⠀⠝⠕⠀
⠊⠝⠎⠞⠗⠥⠍⠑⠝⠞⠎⠀⠃⠥⠞⠀⠏⠑⠝⠀⠁⠝⠙⠀⠏⠁⠏⠑⠗⠂⠀⠓⠑⠀⠀⠓⠁⠙⠀
⠎⠇⠕⠺⠇⠽⠀⠋⠊⠛⠥⠗⠑⠙⠀⠕⠥⠞⠀⠞⠓⠑⠀⠓⠊⠎⠞⠕⠗⠽⠀⠕⠋⠀⠁⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.