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annexe a scificaTions Techniques
spécificaTions opTiques
LCM 60 LCM 70 LCM 76 LCM 80 LCM 90 LCM 114
Conception Lunette Lunette Réflecteur Lunette Lunette Réflecteur
Ouverture 60 mm 70 mm 76 mm 80 mm 90 mm 114 mm
Distance focale 700 mm 900 mm 700 mm 900 mm 660 mm 1 000 mm
Rapport focal du
système optique
12 13 9 11 7 9
Revêtements
optiques
Entièrement
traité
Entièrement
traité
Aluminium
Entièrement
traité
Entièrement
traité
Aluminium
Grossissement
maximum utile
142x 165x
180x
189x 213x 269x
Résolution :
Critère de
Rayleigh
Limite de
Dawes
2,31 secondes
d’arc
1,93 secondes
d’arc
1,99 secondes
d’arc
1,66 secondes
d’arc
1,83 secondes
d’arc
1,53 secondes
d’arc
1,73 secondes
d’arc
1,45 secondes
d’arc
1,55 secondes
d’arc
1,29 secondes
d’arc
1,21 secondes
d’arc
1,02 secondes
d’arc
Puissance de
captage de la
lumière
73x
à l’œil nu
100x
à l’œil nu
118x
à l’œil nu
131x
à l’œil nu
165x
à l’œil nu
265x
à l’œil nu
Champ de vision :
oculaire standard
1,5º 1,2º 1,5º 1,2º 1,6º 1,1º
Valeur linéaire du
champ de vision
(à 1000 m)
24,1 m 18,6 m 24,1 m 18,6 m 25,6 m 18 m
Grossissement
de l’oculaire
28x (25 mm)
78x (9 mm)
36x (25 mm)
100x (9 mm)
28x (25 mm)
78x (9 mm)
36x (25 mm)
100x (9 mm)
26x (25 mm)
73x (9 mm)
40x (25 mm)
111x (9 mm)
Longueur du
tube optique
73,7 cm
(29 pouces)
91,4 cm
(36 pouces)
68,6 cm
(27 pouces)
91,4 cm
(36 pouces)
68,6 cm
(27 pouces)
45,7 cm
(18 pouces)
spécificaTions élecTroniques
Tension d’entrée 12 V c.c. nominale
Piles requises 8 AA alcalines
Alimentation 12 V c.c.-750 mA (pointe positive)
26


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