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18 I FRANÇAIS
Remarque : Les spécifications sont susceptibles de changement sans notification préalable ni obligation.
SPÉCIFICATIONS
Modèle n° 21035
Travel Scope 70
Modèle n° 21038
Travel Scope 50
Conception optique Lunette Lunette
Ouverture 70 mm (2,8 po) 50 mm (2,0 po)
Distance focale 400 mm 360 mm
Rapport focal f/5,7 f/7,2
Revêtements optiques Revêtement intégral Revêtement
Chercheur 5x24 2x20
Renvoi coudé
Redresseur d’images -
45° 32 mm (1,25 po)
Redresseur d’images-
24 mm (0,96 po) à 31 mm (1,25 po) - 45°
Oculaires 20 mm - 1,25 po (20x) 20 mm 1,25 po (18x)
10 mm - 1,25 po (40x) 8 mm 1,25 po (45x)
Lentille de Barlow – 3x 1,25 po S.O. Oui (54x et 135x)
Champ de vision apparent 20 mm à 50° 20 mm à 32°
10 mm à 50° 8 mm à 30°
Champ de vision angulaire 20 mm à 2,5° 20 mm à 1,6°
10 mm à 1,3° 8 mm à 0,
Champ de vision linéaire --
pi/1000 verges 20 mm à 131/44 20 mm à 84/28
m/1000 mètres 10 mm à 67/22 8 mm à 37/13
Mise au point rapprochée avec oculaire
de 20 mm
5,8 m (19 verges) 4,5 m (15 verges)
Monture Altazimutale (trépied photo) Altazimutale (trépied photo)
Bouton de blocage de l’altitude Oui Oui
Bouton de blocage de l’azimut Non Non
Astronomie Téléchargement Du Logiciel Oui Oui
Grossissement maximum utile 168x 120x
Magnitude limite stellaire 11,7 11,1
Résolution -- Raleigh (secondes d’arc) 1,98 2,66
Résolution – Limite Dawes “ “ 1,66 2,28
Puissance de captage de la lumière 100x 51x
Longueur du tube optique 43 cm (17 po) 30 cm (12 po)
Poids du télescope 1,5 kg (3,3 lb) 1 kg (2,2 lb)
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