8 
APPENDIX 
Tables of the pointing error, S p , and its estimated standard 
deviation for high contrast circular targets. 
A. Means based 
on 5 series of 50 
observations 
(i) Measuring mark diameter 
2.23 minutes of 
Target Visual 
Annulus 
S 
Angle (min.) 
width (min.) 
(Sec?) 
2.53 
0.15 
1.40 ± .1 
3.08 
0.34 
2.40 ± .2 
3.40 
0.59 
3.50 ± .3 
4.13 
0.95 
5.54 ± .3 
4.90 
1.34 
5.42 ± .2 
10.00 
3.89 
5.44 ^ .1 
15.10 
6.44 
7.66 ± .2 
20*10 
8.94 
8.36 ± .3 
29.93 
13.85 
12.69 ± .4 
(ii) Measuring mark diameter 
3.42 minutes of 
Target Visual 
Annulus 
S P 
Angle (min.) 
width (min.) 
(Sec?) 
3.75 
0.17 
1.17 .1 
4.53 
0.56 
4.08 ±- .1 
4.90 
0.74 
4.98 ±- .5 
10.00 
3.29 
5.26 ±- .5 
15.10 
5.84 
6.70 ± .2 
17.50 
7.04 
8.18 ± .7 
20.10 
8.34 
8.77 ± .6 
29.93 
13.25 
13.26 ± .6 
(iii) Measuring mark diameter 
17.75 minutes o: 
Target Visual 
Annulus 
s p 
Angle (min.) 
width (min.) 
(Sec.) 
18.10 
0.18 
1.43 ± .1 
18.52 
0.39 
2.84 ± .1 
20.10 
1.18 
4.88 ±- .3 
22.84 
2.55 
4.25 ±- .3 
29.93 
6.09 
5.86 ± .1 
44.93 
13.09 
13.07 ±- .6