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68 

Saturday, March 28, 1908

North Polar Sequence Scale N AC 8858 2 in. eye-piece

copied   AC 7666 Three exp 1^m, 10^m, 20^m [[underlined]] For relative magn. [[/underlined]] [[underlined]] This plate not used for polar seq. abs. Magn. [[/underlined]]

A First Exposure 
[[3 column table]]

A | 2.9 2.7 | 2.7 
a^1 | 7.7 7.3 7.3 | 7.30 0 0
B | 4.8 4. [[strikethrough]] 7 [[/strikethrough]] 6 4.9 4. [[strikethrough]] 6 [[/strikethrough]] 5 4.6 | 4.57 0 1 0
C | 5.8 5.4 5.6 | 5.50 1 1
G | 7.7 7.3 7.3 | 7.30 0 0
F | 7.7 7.3 7.3 | 7.30 0 0
b^3 | 9.6 | 9.6 ..a
a^4 | 8.2 7.8 7.9 | 7.85 0 1
D | 6.7 6.3 6.0 | 6.15 | 1 2
E | 7.2 6.8 6.6 | 6.70 1 1
a^2 | 7.7 7.3 6.9 | 7.10 2 2
a^3 | 8.4 8.0 7.7 | 7.85 2 1
a^5 | 8.7 8.3 8.7 | 8.50 2 2
b^1 | 8.9 8.5 8.7 | 8.60 1 1
b^2 | 9.4 | 9.4 ..a
c^1 | 9.6 |   |
c^4 | 9.7 |   |
c^2 | 10.0 |   |
c^3 |   |   |
[[formula]]

B Second Exposure
[[3 column table]]
A | 3.3 3.1 | 3.1 a
B | 4.7 4.5 4.9 4.5 4.6 | 4.53 0 0 1
C | 5.9 5.5 5.6 | 5.55 1 0
G | 7.7 7.3 7.0 | 7.15 1 2
a^4 | 8.4 8.0 7.8 | 7.90 1 1
b^2 [[strikethrough]] 7.5 [[/strikethrough]] 9.2 | 9.2 ..a
D | 6.8 6.4 5.9 | 6. [[strikethrough]] 2 [[/strikethrough]] 15 2 3
E | 6.9 6.5 6.7 | 6.60 1 1
a^1 | 7.7 7.3 7.5 | 7.40 1 1
a^5 | 8.6 8.2 8.1 | 8.15 0 1
c^4 | 9.2 | 9.2 ..a
a^3 | 8.2 7.8 7.7 | 7.75 | 0 1
F | 7.6 7.2 7. [[strikethrough]] 3 [[/strikethrough]] 4 | 7.30 1 1
a^2 | [[strikethrough]] 6.7 [[/strikethrough]] 7.4 7.0 7.1 | 7.05 0 1
b^3 | 8.9 | 8.9 ..a
b^1 | 8.9 8.5 8.8 | 8.65 1 2
c^1 | 9.6 | 9.6 ..a
[[formula]]

C Third Exposure sc. 2
[[3 column table]]

A | 5.8 5.4 5.7 | 5.55 2 1
a^1 | 8.9 | 8.9 ..a
D | 8.6 8.2 8.6 | 8.40 2 2
B | 7.6 7.2 6.9 | 7.05 2 1
a^3 | 9.5 | 9.5 ..a
C | 8.0 7.6 7.7 | 7.65 . 0 1
E | 8.8 8.4 8.6 | 8.50 1 1
a^2 | 9.3 |   |
G | 9.2 |   |
F | 9.0 |   |
a^4 | 9.8 |   |
a^5 | 9.9 |   |
b^1 |   |   |
[[formula]]



69

[[underlined]] Monday, March 30, 1908 [[/underlined]]

2.40
North Polar Sequence
copied   I 28206  Eight Exposures, 5^s, 10^s, 20^s, 40^s, 80^s, 160^s, 320^s, 640^s
Scale M      | i | 8.7 |f' 9.6
A First Exposure 
[[3 column table]]

A |   |   |
im. v.p. a^1 | 1.7 1.9 |   |
b^1 | 3.6 3.8 |   |
a^3 | 2.5 2.7 |   |
G | t.n.e.
F | 1.9 2.1 |   |
b^3 | 3.8 4.0 |   |
a^ [[strikethrough]] 2 [[/strikethrough]] 5 | 2.7 2.9 |   |
c^4 | 4.3 4.5 4.4 | 4.45 1 0
a^4 | 2.7 2.9 |   |
b^2 | 4.4 4.6 |   |
C |   |   |
E |   |   |
c^1 | 4.6 4.8 4.6 | 4.70 1 1
a^ [[strikethrough]] 5 [[/strikethrough]] 2 | t.n.e.
c^5 | 5.3 5.5 5.8 | 5.65 1 2
c^2 | 5.6 5.8 5.6 | 5.70 1 2
c^3 | 5.7 5.9 5.9 | 5.80 1 1
f^1 | 6.7 6.9 6.8 | 6.85 1 0
d | 6.0 6.2 5.9 | 6.05 2 1
*g | [[strikethrough 8 [[/strikethrough]] 7.9 | [[strikethrough]] 8 [[/strikethrough]] 7.9
[[margin]] Assumed to be 7.9 H.S.L. Apr. 1, '08
e | 6.2 6.4 6.7 | 6.55 2 1
f^2 | 6.9 7.1 7.4 | 7.25 1 2
c^7 | 6.0 6.2 5.9 | 6.05 2 1
c^6 | 5.8 6.0 5.9 | 5.95 0 1
f^3 | 7.7 |   |
h | 8.3 |   |
i | 8.7 |   |
l | 9.8 |   |
k^4 | 9.7 |   |
k^3 | 9.6 |   |
k^1 | 8.8 |   |
k^2 | 9.3 |   |
m | 10.2 |   |
k^5 | 9.7 |   |
[[formula]]

B Second Exposure
[[3 column table]]

a^1 | 2.3 2.5 |   |
b^1 | 4.0 4.2 |   |
b^2 | 4.7 4.9 |   |
c^7 | 6.8 7.0 6.8 | 6.90 1 1
a^4 | 3.1 3.3 |   |
c^5 | 5.9 6.1 [[strikethrough]] 5.4 [[/strikethrough]] 6.5 | 6.30 2 2
c^3 | 6.4 6.6 6.6 | 6.60 0 0
e | 6.7 6.9 7.0 | 6.95 1 0
c^6 | 6.7 6.9 6.7 | 6.80 1 1
a^2 | t.n.e.
c^1 | 5.6 5.8 5.7 | 5.75 0 1
c^2 | 6.0 6.2 6.1 | 6.15 0 1
d | 6.8 7.0 6.8 | 6.90 1 1
b^3 | 4.8 5.0 | 5.0 a
a^3 | 3.2 3.4 | 3.4
a^5 | 3.7 3.9 | 3.9
c^4 | 4.9 5.1 5.4 | 5.25 1 2
f^2 7.8 |   |
i| 9.2 |   |
[[formula]]

M.E.H.