Explains the layout of her recently completed catalogue of 2500 nebulae.
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Explains the layout of her recently completed catalogue of 2500 nebulae.
The Duke of Cambridge inquired about JH's research interests.
Wishes JH a happy birthday. Finished the catalogue of 2500 nebulae.
Completing the catalogue of 2500 nebulae. Impressed with a French biography of William Herschel, although CH notes a few occasions where 'too great a stress is laid on the assistance of others.'
Her social life is rather boring at the moment because CH is busy caring for her sick brother Dietrich.
Recovering from a prolonged illness. Discusses parallax. JH reports that he now is very skilled at sweeping with the 20-ft reflecting telescope.
Informs CH of his gold medal from the French Academy of Sciences for JH's and James South's paper on double stars. Finds CH's catalogue of nebulae in zones very useful. Heard about Johann Pfaff's death. James Grahame may be moving to Göttingen.
Studied 659 double stars; JH is confident that his work proves his father's conclusions. Now plans to study nebulae.