Busch (Petzval)
F/3,0 F=100,000 mm (30,0°)
[ f/3,0 f=100,014 mm (30,0°) ]
Busch (Petzval)
F/3,0 F=100,000 mm (30,0°)
[ f/3,0 f=100,014 mm (30,0°) ]
N° |
Rayon |
Indice d |
Constringence |
Épaisseur |
0 |
air | ***** |
***** | |
1 |
53,960 | 1,51810 |
59 |
6,196 |
2 |
-45,370 | 1,57830 |
41 |
1,239 |
3 |
432,030 | air |
***** |
33,830 |
4 |
133,700 | 1,57830 |
41 |
1,549 |
5 |
39,700 | air |
***** |
2,478 |
6 |
47,810 | 1,51520 |
59 |
4,957 |
7 |
-139,090 | air |
***** |
o3o-3k4f |
no dioptre diaphragme : 3 | Calcul n° 1
| |||
| Commentaire : Tur nº76 p120 | ||||
| Inventeur : [Petzval] | Maison : Busch | Date : ? | 2/11 | |