Celestron 21035 manual Spécifications de la longue

Page 68

 

Spécifications de la longue

 

 

Modèle n° 21035

 

vue de voyage

 

 

 

 

 

 

 

 

 

 

 

Conception optique

 

Lunette

 

Ouverture

 

70 mm (2,8 po)

 

Distance focale

 

400 mm

 

Rapport focal

 

f/5,7

 

Revêtements optiques

 

Entièrement traité

 

Chercheur

 

5x24

 

Renvoi coudé

 

Redresseur d’images - 45° 32 mm (1,25 po)

 

 

 

 

 

 

Oculaires

 

20 mm - 1,25 po (20x)

 

 

 

 

10 mm - 1,25 po (40x)

 

 

 

 

 

Champ de vision apparent

 

20 mm à 50°

 

 

 

 

10 mm à 50°

 

 

 

 

 

Champ de vision angulaire

 

20 mm à 2,5°

 

 

 

 

10 mm à 1,3°

 

 

 

 

 

Champ de vision linéaire -- pi/1000 verges /

 

20 mm à 131/44

 

m/1000 mètres

 

10 mm à 67/22

 

 

 

 

 

Mise au point rapprochée avec oculaire de 20 mm

 

5,8 m (19 verges)

 

 

 

 

 

 

Monture

 

Altazimutale (trépied photo)

 

Bouton de blocage de l’altitude

Oui

 

Bouton de blocage de l’azimut

Non

 

 

 

 

 

 

 

 

 

Grossissement maximum utile

168x

 

Magnitude limite stellaire

11,7

 

Résolution -- Raleigh (secondes d’arc)

1,98

 

Résolution – Limite Dawes " "

1,66

 

Puissance de captage de la lumière

100x

 

 

 

 

 

 

Longueur du tube optique

43 cm (17 po)

 

Poids du télescope

1,5 kg (3,3 lb)

 

 

 

 

 

Remarque : Les spécifications sont susceptibles de changement sans notification préalable ni obligation.

17

Image 68
Contents Travel Scope Table of Contents Page Travel Scope Setting up the Tripod Attaching the Telescope Optical Tube to the Tripod Moving the Travel Scope ManuallyAligning the Finderscope Installing the Diagonal & EyepieceInstalling the Finderscope Focusing Calculating MagnificationDetermining Field of View General Observing HintsCelestial Coordinate System Motion of the Stars Observing the Moon Observing the PlanetsObserving the Sun Lunar Observing HintsObserving Deep-Sky Objects Star HoppingLyra Seeing Conditions TransparencySky Illumination SeeingCare and Cleaning of the Optics Rub in circlesTravel Scope Specifications Reiseteleskop Inhaltsverzeichnis Achtung Abb -1 Travel Scope Aufbau des Stativs Aufsatz des optischen Tubus des Teleskops am Stativ Manuelle Bewegung des Travel ScopeAusrichtung des Suchers Finderscope Installation des Zenitspiegels und OkularsInstallation des Sucherfernrohrs Fokussierung Berechnung der VergrößerungErmittlung des Gesichtsfelds Allgemeine Hinweise zur BeobachtungDas Himmelskoordinatensystem Bewegung der Sterne Mondbeobachtung Beobachtung der PlanetenBeobachtung der Sonne Empfehlungen zur MondbeobachtungBeobachtung der Deep-Sky-Objekte StarhoppingRingnebel Beobachtungsbedingungen TransparenzHimmelsbeleuchtung SichtPflege und Reinigung der Optik Spezifikationen des Travel Scope Telescopio para viajes Índice Advertencia Figura 1-1 Travel Scope Cómo ensamblar el trípode Vea la FiguraConexión del tubo óptico del telescopio al trípode Movimiento manual del Travel ScopeAlineación del telescopio buscador Instalación de la lente a 90º y el ocularInstalación del telescopio buscador Enfoque Cálculo del aumentoCómo se determina el campo visual Consejos generales para las observacionesEl sistema de coordenadas de los cuerpos celestes FiguraMovimiento de las estrellas FiguraObservación de la Luna Observación de los planetasObservación del Sol Sugerencias para observar la LunaObservación de cuerpos celestes en el cielo profundo Salto de estrellasLira Vega Condiciones para la observación TransparenciaIluminación del cielo VisiónCuidado y limpieza de las lentes ópticas Especificaciones del Travel Scope Longue vue de voyage Manuel de l’utilisateur Table des matières Avertissement Longue vue de voyage Installation du trépied Déplacement manuel de la longue vue de voyage Fixation du tube optique du télescope au trépiedAlignement du chercheur Installation du renvoi coudé et de l’oculaireInstallation du chercheur Mise au point Calcul du grossissementÉtablissement du champ de vision Conseils généraux d’observationLe système de coordonnées célestes Mouvement des étoiles Observation de la Lune Observation des planètesObservation du Soleil Conseils d’observation des planètesObservation d’objets du ciel profond Le Star Hopping cheminement visuelLA Lyre Véga Conditions de visibilité TransparenceLuminosité du ciel VisibilitéEntretien et nettoyage des éléments optiques Spécifications de la longue Telescopio da viaggio Indice analitico Avvertenze Figura 1-1 Travel Scope Approntamento del treppiedi Facile vedere la FiguraCollegamento del tubo ottico del telescopio al treppiedi Spostamento manuale del Travel ScopeAllineamento del cannocchiale cercatore Installazione del diagonale e dell’oculareInstallazione del cannocchiale cercatore Messa a fuoco Calcolo dell’ingrandimentoDeterminazione del campo visivo Suggerimenti generali per l’osservazioneIl sistema di coordinate celesti Movimento delle stelle Osservazione della Luna Osservazione dei pianetiOsservazione del Sole Suggerimenti per l’osservazione dei pianetiOsservazione di oggetti del cielo profondo Star Hopping Saltare da una stella all’altraLira Condizioni di visibilità LimpidezzaIlluminazione del cielo VisibilitàCura e pulizia dell’ottica Dati tecnici del Travel Scope 01-09 REV

21035 specifications

The Celestron 21035 is a high-quality, versatile telescope that caters to both novice and experienced astronomers. This reflector telescope is part of the AstroMaster series, known for its ease of use, excellent optical performance, and sturdy construction. One of its standout features is the 70mm aperture, which allows for bright and clear images of celestial objects. The larger the aperture, the more light the telescope can gather, making it ideal for viewing the Moon, stars, and even some of the more distant planets in our solar system.

One of the key technologies integrated into the Celestron 21035 is its fully coated glass optics. The objective lens and the eyepieces feature multiple layers of coatings, enhancing light transmission and delivering sharper images with improved contrast. This optical design ensures that both the colors and details of celestial objects are rendered accurately, which is crucial for astronomical observation.

Ease of setup is another highlight of the Celestron 21035. The telescope comes with a pre-assembled mount and optical tube, allowing users to get started with minimal effort. The simple, intuitive design is perfect for beginners who want to dive into stargazing without being overwhelmed by complicated setup processes. The lightweight and portable nature of the telescope makes it easy to transport, whether you are going to a local observatory or simply heading to your backyard for some nighttime exploration.

Additionally, the Celestron 21035 features an adjustable, full-height tripod that provides sturdy support, minimizing vibrations and maintaining stability while observing. The mount is manually operated with slow-motion controls, enabling precise targeting of celestial objects. Users can easily track their target as it moves across the sky, enhancing the viewing experience.

For those who enjoy astrophotography, the Celestron 21035 offers the option to attach a smartphone or a camera, allowing you to capture stunning images of the night sky. The telescope's versatility is further highlighted by its compatible eyepiece sizes, providing users with the ability to swap in different magnifications based on their interests.

In summary, the Celestron 21035 is an excellent choice for anyone looking to explore the wonders of the universe. With its robust optical performance, user-friendly design, and impressive features, it serves as a reliable tool for amateur astronomers and seasoned stargazers alike. Whether you’re observing lunar craters or distant galaxies, the Celestron 21035 promises an enjoyable and enriching experience under the stars.