restoration - News - Actualités - Les Observatoires du Clain
2024-03-29T14:46:50Z
http://debeerst.ning.com/profiles/blogs/feed/tag/restoration
Restoration of a 81mm Sécretan refractor, +/- 1920
http://debeerst.ning.com/profiles/blogs/restoration-of-a-81mm-secretan-refractor-1920
2016-08-30T06:21:46.000Z
2016-08-30T06:21:46.000Z
Xavier
http://debeerst.ning.com/members/Xavier
<div><img src="http://storage.ning.com/topology/rest/1.0/file/get/3314850208?profile=RESIZE_400x&width=400"></div><div><p><span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">Secretan, Marc Francois Louis<strong><br /></strong></span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">Nationality:  Swiss</span></p>
<p><span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">Brief Bio:  1804-1867, mathematician; scientific instrument maker, Swiss</span></p>
<p><span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">until 1844 - professor of mathematics at Academy of Lausanne;</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">1840 - worked with Friedrich von Martens and Samuel Heer producing daguerreotypes;</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">1844 - moved to Paris;</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">1845 - partnership with Lerebours as Lerebours & Secretan; used joint name until 1880s and beyond.</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">1855 - after retirement of Noel Paymal Lerebours became sole proprietor of Lerebours and Secretan, and signed himself as "Maison Lerebours et Secretan / Secretan, Successeur" and as "Opticien de S.A.M. l'Empereur." He also did work for the Paris observatory.</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">after 1860 - Secretan also issued catalogs as sole proprietor after 1860</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">Collaborated with William Eichens, designer of telescopes.</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">1860s - worked with Foucault, improved silvering techniques.</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">1867 - succeded by his son, Auguste Secretan (1833-1874) and nephew, Georges Secretan (1837-1906 )</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">1874 - succeded by his cousin, Georges.</span><br />
<span class="font-size-3" style="font-size: small; font-family: verdana,geneva;">c. 1900 - succeded by Paul Victor Secretan</span></p>
</div>