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Sisters of Charity of Ottawa Sundials Roger Bailey & Sister Louise Seguin SCO NASS 2008 St Louis, MO Jean-François Allard.

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Presentation on theme: "Sisters of Charity of Ottawa Sundials Roger Bailey & Sister Louise Seguin SCO NASS 2008 St Louis, MO Jean-François Allard."— Presentation transcript:

1 Sisters of Charity of Ottawa Sundials Roger Bailey & Sister Louise Seguin SCO NASS 2008 St Louis, MO Jean-François Allard

2 Ottawa Parliament

3 Ottawa Rivers Ottawa River Rideau River Gatineau River Hull, Quebec

4 Ottawa River Parliament

5

6

7 Sisters of Charity of Ottawa

8 Bytown (Ottawa) Chronicles 1800 Lumberjacks bush camp on Ottawa River 1826 Col John By & Rideau Canal (St Lawrence River Bypass) 1828 Bytown founded: Construction, lumber and military camp Government Sundial erected on this site

9 Bytown (Ottawa) Chronicles 1845 Élisabeth Bruyère, SGM (Soeurs Grises de Montréal) arrived with 3 novices Built convent, school and hospital within a year 1847 Potato famine: Irish immigration and Typhus 1850 Motherhouse and sundials built 1857 Bytown became Ottawa and Capital of Canada 1867 Canadian Confederation

10 Jean-François Allard, OMI 1850 Fr. Allard from Briançon, France as spiritual advisor and teacher Taught religion, science, geography& mathematics, (geometry & gnomonics) Designed and built the sundials Bishop in 1851, Palestine and Natal Source: 'Deschatelets Archives Ottawa, the Oblate Fathers, Ottawa.

11 Fr. Allards Sundials Constructed Traditional French corner dials, simple and elegant Sundials are original, accurate and unique Oldest remaining corner dials in Canada Only historic corner dials outside Quebec

12 Séminaire St-Joseph Trois Rivieres, Quebec Only other historical corner dial surviving Built in 1883, by l'abbé Raymond Caisse, préfêt des études Restored in 1930 Source: CCSQ Catalogue ansolaire/cdstr2.html

13 Technical Analysis Fr. Allards SCO Sundials Are the dials correct for the location & wall declination? Are the hour lines and gnomon correct? Do they tell the right time? Check the dial with modern techniques: Data, pictures, computers Overlay lines on pictures

14 58º 32º N Latitude 45º Longitude 75º 41 53

15 Wall Declination S31.9ºW S58.1ºE

16 S 59º W

17 Morning Dial: S 31º E Narrow dial on east side street Constrained by corner & window Ovoid vs circle Hour lines are correct Gnomon set in meridian plan (latitude is true) Best fit S 31º E not S 31.9º E Excellent pictures by Stephen Blakeney Jan 2008

18 Time Checks: Date/Time Stamps Pictures taken 3 Jan 08 at 2:44 to 2:46 pm EST Equation of Time –425 Longitude º -247 Corrected clock 2:38 solar West PM dial ~2:38 solar East AM dial ~2:38 solar Dial is correct as closely as it can be read

19 Gnomon Angles Gnomons seem not quite parallel. Perspective? Easily bent from meridian plane

20 Fr. Allards SCO Sundials The dial lines and gnomons are correct for the location & wall declination They tell true solar time Modern techniques are no better for designing a dial Fr Allard had an excellent artistic sense. –The subdued colours and lack of ornamentation is right for the convent –The narrow dial on the side street is appropriate to balance the perspective An excellent pair of sundials!


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