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| | Ismail Bouillaud (Bullialdus, 1605-1694) (Site not responding. Last check: 2007-11-03) |
 | | Ismail Bouillaud (or Boulliau, or latinized Bullialdus) was a French librarian, astronomer and priest, who was born in 1605 in Loudun where he studied, then traveling in Italy, Holland and Germany for buying books. |
 | | Because the "nebula" had not been documented by so many famous astronomers, Boulliau suspected that it might been variable, similar to Mira Ceti which he also studied, and attempted to calculate a period of variation - of 333 days, compared to the modern value of 332. |
 | | The astronomical community has named a Moon crater to his honor: Bullialdus (20.7S, 22.2W, 60 km diameter, in 1935). |
| www.seds.org /messier/xtra/Bios/bullialdus.html (223 words) |
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