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Frank Swannell Diaries: Part I

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MEMORANDA. [1st, Sun rises 8 h. 8 m.
 
MEMORANDA. [1st, Sun rises 8 h. 8 m.
  
Fig 76 [diagram]
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Fig 76
Fig 77 [diagram]
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Fig 77
 
P = Pole of the heavens
 
P = Pole of the heavens
 
Fig 77 drawn on the plane of the meridian, showing the circles of the upper hemisphere, as the would appear to the eye situated at a great distance due East of the sphere.  
 
Fig 77 drawn on the plane of the meridian, showing the circles of the upper hemisphere, as the would appear to the eye situated at a great distance due East of the sphere.  
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Declination is that portion of the Meridian between the Equator and the body - Reckoned N. or S. from the Equator
 
Declination is that portion of the Meridian between the Equator and the body - Reckoned N. or S. from the Equator
A3[sigma?] = [delta?] of "A"
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A3 = [illegible] of "A"
 
Declination and Terrestial Latitude correspond - that is a star in 28[degrees] N. Dec. passes every day vertically over all places in 28[degrees] N
 
Declination and Terrestial Latitude correspond - that is a star in 28[degrees] N. Dec. passes every day vertically over all places in 28[degrees] N
  
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206
 
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[at bottom of page, centred:] 6  
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6  
  
 
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BC Archives, MS-0392 Box 1 Volume 4 / FRANK SWANNELL PAPERS / Diary and enclosures, 1915.
 
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BC Archives, MS-0392 Box 1 Volume 4 / FRANK SWANNELL PAPERS. Diary and enclosures, 1915.
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Revision as of Jun 4, 2015, 1:44:34 PM

MEMORANDA. [1st, Sun rises 8 h. 8 m.

Fig 76 Fig 77 P = Pole of the heavens Fig 77 drawn on the plane of the meridian, showing the circles of the upper hemisphere, as the would appear to the eye situated at a great distance due East of the sphere. NWSE (Fig 76) or the horizon

- appears as a st. line, NS being seen edgewise

The Meridian (NS - Fig 76) appears as semicircle NP22. The E. + W. Points are seen in one with the centre ENW - 50[?] [degrees] fr. the pole is the Celestial Equator

Prime Vertical - EZW passing thru the E.+W. pts (In Fig 77 EZW does not appear being one with CZ, a radius joining the centre Zenith.

When the observer is on the equator the celestial Equator + prime vertical coincide

Altitude is measure on a circle of altitude from the horizon AH = altitude of A

Parallels of altitude are circles parallel to the horizon

Zenith Distance (Co-Altitude) is the arc included between the zenith and celestial body - ZA

Declination is that portion of the Meridian between the Equator and the body - Reckoned N. or S. from the Equator A3 = [illegible] of "A" Declination and Terrestial Latitude correspond - that is a star in 28[degrees] N. Dec. passes every day vertically over all places in 28[degrees] N

Polar Distance is the arc of the Celestial Meridian between a Celestial body + the Pole When Lat. + Dec are same name the P.D is the complement of the [delta?] to 90[degrees] When Lat. + [delta?] are different names PD = [delta?] + 90[degrees]

Azimuth is the Angle at the Zenith contained between the Merid. of the place + the circle of altitude passing thru the body. L.PZA is azimuth of A. (In Geodetic Computations reckoned from South around to 20

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BC Archives, MS-0392 Box 1 Volume 4 / FRANK SWANNELL PAPERS / Diary and enclosures, 1915.