17 
List of Compensating Eye-pieces. 
Searcher 
Eye-pieces 
Working Eye-pieces 
Eye-piece No. : 
1 
2 
4 
6 
8 
12 
18 1 27 
Equivalent focal 
length in mm 
180 
90 
For t 
45 
le continental t 
30 22.5 
ube : 
15 
10 
T'ripp • TVTfirl^''; 
20 
20 
20 
20 
30 
30 
25 
Equivalent focal 
length in mm 
135 
For 
()7 
the En^ 
>lisli tu' 
34 
36 : 
22.5 
15 
10 
Price: Marks 
25 
25 
35 
30 
30 
25 
Table of Magnifications of the Apochromatic Objectives 
with the Compensating Eye-pieces 
for an image distance of 250 mm. 
Focus of 
the 
Searcher 
Eye-pieces 
Working Eye-pieces 
objective 
1 
2 
4 
6 
8 
12 
18 
27 
24.0 
16.0 
12.0 
8.0 
6.0 
4.0 
3.0 
2.5 
2.0 
1.5 
15.5 
31 
62 
83 
100 
125 
167 
21 
31 
42 
62 
83 
125 
167 
200 
250 
333 
42 
62 
83 
125 
167 
250 
333 
400 
500 
667 
94 
187 
372 
498 
600 
750 
1000 
83 
125 
167 
250 
333 
500 
667 
800 
1000 
1334 
125 
187 
250 
375 
500 
750 
1000 
1200 
1500 
2000 
187 
281 
375 
562 
750 
1125 
1500 
1800 
2250 
3000 
281 
562 
1125 
