DIY History | Transcribe | Scholarship at Iowa | Eccentricity of the Sextant by Frederic Furbish, 1893 | Eccentricity of the Sextant by Frederic Furbish, 1893, Page 165

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Eccentricity of the Sextant by Frederic Furbish, 1893

Eccentricity of the Sextant by Frederic Furbish, 1893, Page 165

[table sideways]
[column 1]
No.
----------
1
2
3
4
5
6
7
8
9
10
11
12
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[column 2]
AM
LOG.
----------
1.86336
1.71343
1.53839
1.36595
1.00162
0.51700
9.90472
8.25344
0.64847
0.98994
1.17943
1.41298
MEAN = 
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[column 3]
AM
No.
----------
73.00"
51.69
34.54
33.22
10.03
[strikethrough]3.28[/strikethrough]
0.80
0.02
4.45
9.71
15.11
[strikethrough]25.88[/strikethrough]
22.26"
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[blank]

[column 4]
BN
LOG.
----------
8.2842
7.9989
7.6646
7.3175
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[blank]
[blank]
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[blank]
[blank]
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7.3969
MEAN = 
57° 3' 51"
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[column 5]
BN
No.
----------
0.02
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
+ 22.26"
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[column 6]
h[subscript]0[/subscript] = h + Am + Bn
----------
57° 4' 16.98"
      4  23.18
      4    3.54
      4   17.22
      4   31.53
      [strikethrough]4   37.28[/strikethrough]
      4   19.80
      3   59.02
      4   18.45
      4    3.77
      3   59.11
      [strikethrough]3   39.88[/strikethrough]
57° 4' 13.26"
= 57° 4' 13.26" CHECK
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[column 7]
V
----------
3.72
9.92
- 9.72
3.96
18.27
[strikethrough]24.02[/strikethrough]
6.54
- 14.24
5.19
- 9.49
- 14.15
[/strikethrough]-33.39[/strikethrough]
95.20 [+v]
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[column 8]
PROBABLE ERROR, ETC..
----------
A = 9.56247
B = 9.31372
{+47.60     9.873307 cos φ
{ -47.60     9.424358 cos δ
                  -------------------------
n = 0.10     9.297665 cos φ cos δ
n [*?] 1       9.735195 sin (φ - δ)
                  -------------------------
                  9.562470  A
r = +-0.845(95.20"/(square root of 90)) = +- 8.479"  9.124940 A[superscript]2[/superscript]
                   0.188781 cos[illegible](φ - δ)
                  -------------------------
                  9.313721  B .
Prob. error of mean =
     +-(8.479"/(square root of 10)) = +- 2.681"
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STAR B Ursae Minoris    DATE May 30, '93

[/table sideways]

Saving...

[table sideways] [column 1] No. ---------- 1 2 3 4 5 6 7 8 9 10 11 12 [blank] [blank] [blank] [column 2] AM LOG. ---------- 1.86336 1.71343 1.53839 1.36595 1.00162 0.51700 9.90472 8.25344 0.64847 0.98994 1.17943 1.41298 MEAN = [blank] [blank] [column 3] AM No. ---------- 73.00" 51.69 34.54 33.22 10.03 [strikethrough]3.28[/strikethrough] 0.80 0.02 4.45 9.71 15.11 [strikethrough]25.88[/strikethrough] 22.26" [blank] [blank] [column 4] BN LOG. ---------- 8.2842 7.9989 7.6646 7.3175 [blank] [blank] [blank] [blank] [blank] [blank] [blank] 7.3969 MEAN = 57° 3' 51" [blank] [column 5] BN No. ---------- 0.02 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 + 22.26" [blank] [column 6] h[subscript]0[/subscript] = h + Am + Bn ---------- 57° 4' 16.98" 4 23.18 4 3.54 4 17.22 4 31.53 [strikethrough]4 37.28[/strikethrough] 4 19.80 3 59.02 4 18.45 4 3.77 3 59.11 [strikethrough]3 39.88[/strikethrough] 57° 4' 13.26" = 57° 4' 13.26" CHECK [blank] [column 7] V ---------- 3.72 9.92 - 9.72 3.96 18.27 [strikethrough]24.02[/strikethrough] 6.54 - 14.24 5.19 - 9.49 - 14.15 [/strikethrough]-33.39[/strikethrough] 95.20 [+v] [blank] [blank] [column 8] PROBABLE ERROR, ETC.. ---------- A = 9.56247 B = 9.31372 {+47.60 9.873307 cos φ { -47.60 9.424358 cos δ ------------------------- n = 0.10 9.297665 cos φ cos δ n [*?] 1 9.735195 sin (φ - δ) ------------------------- 9.562470 A r = +-0.845(95.20"/(square root of 90)) = +- 8.479" 9.124940 A[superscript]2[/superscript] 0.188781 cos[illegible](φ - δ) ------------------------- 9.313721 B . Prob. error of mean = +-(8.479"/(square root of 10)) = +- 2.681" [blank] [blank] [blank] [blank] [blank] [blank] STAR B Ursae Minoris DATE May 30, '93 [/table sideways]