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	<title>Bibliography:FCR Bibliography 0050 - Revision history</title>
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	<updated>2026-04-22T18:35:31Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<title>Alice Sabatini: Created page with &quot;{{FCR Bibliography entries |Name(s)=Helden, Albert Van; Reeves, Eileen |Title=Verifying Galileo's Discoveries: Telescope-making at the Collegio Romano |Year=2007 |Language=Eng...&quot;</title>
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		<updated>2025-01-03T11:08:23Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{FCR Bibliography entries |Name(s)=Helden, Albert Van; Reeves, Eileen |Title=Verifying Galileo&amp;#039;s Discoveries: Telescope-making at the Collegio Romano |Year=2007 |Language=Eng...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{FCR Bibliography entries&lt;br /&gt;
|Name(s)=Helden, Albert Van; Reeves, Eileen&lt;br /&gt;
|Title=Verifying Galileo's Discoveries: Telescope-making at the Collegio Romano&lt;br /&gt;
|Year=2007&lt;br /&gt;
|Language=English&lt;br /&gt;
|Contained in=Acta historica astronomiae, vol. 33&lt;br /&gt;
|Bibliographic level=Paper in journal&lt;br /&gt;
|Keyword(s)=History of Science; Collegium Romanum; Astronomy&lt;br /&gt;
}}&lt;br /&gt;
The Jesuits of the Collegio Romano in Rome, especially the mathematicians Clavius and Grienberger, were very interested in Galilei's discoveries. After they had failed to recognize with telescopes of own construction the celestial phenomena, they expressed serious doubts. But from November 1610 onward, after they had built a better telescope and had obtained from Venice another one in addition, and could verify Galilei's observations, they completely accepted them. Clavius, who stuck to the Ptolemaic system till his death in 1612, even pointed out these facts in his last edition of Sacrobosco's Sphaera. He as well as his conpatres, however, avoided any conclusions with respect to the planetary system.&lt;/div&gt;</summary>
		<author><name>Alice Sabatini</name></author>
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