1869 Aug 7 Eclipse

Particulars of the Observation of the
Solar Eclipse of Aug 7th 1869
at Toronto

  h   m   sec
First Contact, Angle 128º from Solar Vertex 4 . 44 . 50
Greatest Obscuration 5 . 46. 20
Last Contact, Angle 75º from Solar Vertex 6 . 36 . 44
Duration 1 . 51 . 54

 

h   m  
4 . 48 Lunar ridges visible - jagged most towards the upper limb, Elvins; Edge sharp and defined, showing no appearance of lunar atmosphere - (E) More brilliant round the edge of the moon, more so that the edge of the sun - more brilliant than in the sun's centre. (E)
4 . 51 Ridges beautiful - Lunar margin still brilliant (T)
4 . 52 Ridges more distinct (T) Ridges more distinct towards the upper limb E.
4 . 54 Cusps beautifully sharp   T
4 . 56 Cusps so sharp that refraction may be considered impossible   E
5 . 00 Getting very near a large solar spot.   E
5 . 1 Solar spot becoming less distinct   E
Cusps of the sun exceedingly rounded at present.   R
Sharp in min   E. So in mine   T.
5 . 2 Definition of the penumbra of solar spot good again   E. One cusp sharp again, the other rounded   R.
5 . 3 Spot rather hanging on the moon's edge   E.
5 . 3 . 12s. Contact of spot
5 . 3 . 40 Spot gone
5 . 6 Cusps exceedingly sharp   R. Moon at present no light as the sun itself   T.
5 . 8 A bright substance passing in front of the moon   E. (Think this is moisture passing over my eye). Milky appearance   R. T.
5 . 10 Two projections from the moon's edge quite plain   R.
5 . 12 Three of the white spots passing in succession over in front of the moon black surface of the moon   E.
5 . 19 Solar spots more distinct than they were before the contact   E.
5 . 26 Objects frequently passing across the sun like brilliant points   E. There is no question that these moving spots are floating in the atmosphere as I see one turn and go in the opposite direction   E.
5 . 31 Rather a bright milky light extending round the sun's darkened limb - that is the sun artificially darkened E.
5 . 33 I see the protuberances very bright - the lunar - that is, mountains T.
5 . 37 Mr. Thompson here said "I saw a star," (i.e. with the naked eye)
5 . 41 Can see the edge of the moon distinct at some distance from the sun's edge - say five degrees E looking darker E
5 . 42 Getting very near the spot
5 . 43 . 40s Contact of spot. Light issuing from the cusp T Has been for some time R.
6 . 0 . 2s Spot coming in R
6 . 3 There are three spots T. There are four E. One of these is divided into a number of small ones R Floating specks still continue R
6 . 29 . 35s Lower spot visible E

Mr. Winder, President, was at Hamilton at the time, and from his observation the first contact was 4h. 44m 44s. He made some observations with the spectroscope, but was not able to see more than he has observed at ordinary times.

    Thermom
SUN		 Thermom
SHADE		 Barom
4h 43s 84.5 64.3 29.98
  45 85 64.3 29.98
  50 85.5 64.6 29.98
  55 85 64.5 29.97
5   85.5 64.2 29.96
  5 85 63.7 29.96
  10 82 62.9 29.96
  15 79.5 62.3 29.96
  20 78.5 61.7 29.955
  25 76.5 61.2 29.955
  30 76 60.8 29.95
  35 75 60.2 29.95
  40 72.5 59.2 29.94
  45 71.5 58.2 29.94
  50 69.5 58.8 29.94
  55 69 58 29.94
6   69.5 58 29.94
  5 70.5 58 29.94
  10 72 58 29.94
  15 72.5 58.2 29.94
  20 75 58.6 29.93
  25 75.5 58.6 29.93
  30 75 58 29.93
  35 76 58 29.93

 

Author: 
Anonymous
Post date: 
Sunday, July 24, 2011 - 7:44pm
Last modified: 
Saturday, December 22, 2012 - 9:17pm