Celestron 21035 manual Travel Scope Specifications

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Travel Scope Specifications

 

Model # 21035

 

 

 

Optical Design

Refractor

 

Aperture

70mm (2.8")

 

Focal Length

400mm

 

 

Focal Ratio

f/5.7

 

 

Optical Coatings

Fully Coated

 

Finderscope

5x24

 

 

Diagonal

Erect Image - 45° 1.25"

 

 

 

 

Eyepieces

20mm 1.25" (20x)

 

10mm

1.25"

(40x)

 

 

 

Apparent Field of View

20mm @ 50°

 

 

10mm @ 50°

 

 

 

 

Angular Field of View

20mm @ 2.5°

 

 

10mm @ 1.3°

 

 

 

Linear Field of View -- ft/1000yards /

20mm @ 131/44

m/1000meters

10mm @ 67/22

 

 

 

Near Focus w/20mm Eyepiece

19' (5.8m)

 

 

 

 

 

Mount

Altazimuth (Photo Tripod)

Altitude Locking Knob

Yes

 

 

Azimuth Locking Knob

No

 

 

 

 

 

 

 

 

 

 

Highest Useful Magnification

168x

 

 

Limiting Stellar Magnitude

11.7

 

 

Resolution -- Raleigh (arc seconds)

1.98

 

 

Resolution -- Dawes Limit " "

1.66

 

 

Light Gathering Power

100x

 

 

 

 

 

 

Optical Tube Length

17" (43cm)

 

Telescope Weight

3.3# (1.5Kg)

 

 

 

 

 

Note: Specifications are subject to change without notice or obligation.

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Contents Travel Scope Table of Contents Page Travel Scope Setting up the Tripod Moving the Travel Scope Manually Attaching the Telescope Optical Tube to the TripodAligning the Finderscope Installing the Diagonal & EyepieceInstalling the Finderscope Calculating Magnification FocusingGeneral Observing Hints Determining Field of ViewCelestial Coordinate System Motion of the Stars Observing the Planets Observing the MoonObserving the Sun Lunar Observing HintsStar Hopping Observing Deep-Sky ObjectsLyra Transparency Seeing ConditionsSky Illumination SeeingRub in circles Care and Cleaning of the OpticsTravel Scope Specifications Reiseteleskop Inhaltsverzeichnis Achtung Abb -1 Travel Scope Aufbau des Stativs Manuelle Bewegung des Travel Scope Aufsatz des optischen Tubus des Teleskops am StativAusrichtung des Suchers Finderscope Installation des Zenitspiegels und OkularsInstallation des Sucherfernrohrs Berechnung der Vergrößerung FokussierungAllgemeine Hinweise zur Beobachtung Ermittlung des GesichtsfeldsDas Himmelskoordinatensystem Bewegung der Sterne Beobachtung der Planeten MondbeobachtungBeobachtung der Sonne Empfehlungen zur MondbeobachtungStarhopping Beobachtung der Deep-Sky-ObjekteRingnebel Transparenz BeobachtungsbedingungenHimmelsbeleuchtung SichtPflege und Reinigung der Optik Spezifikationen des Travel Scope Telescopio para viajes Índice Advertencia Figura 1-1 Travel Scope Vea la Figura Cómo ensamblar el trípodeMovimiento manual del Travel Scope Conexión del tubo óptico del telescopio al trípodeAlineación del telescopio buscador Instalación de la lente a 90º y el ocularInstalación del telescopio buscador Cálculo del aumento EnfoqueConsejos generales para las observaciones Cómo se determina el campo visualFigura El sistema de coordenadas de los cuerpos celestesFigura Movimiento de las estrellasObservación de los planetas Observación de la LunaObservación del Sol Sugerencias para observar la LunaSalto de estrellas Observación de cuerpos celestes en el cielo profundoLira Vega Transparencia Condiciones para la observaciónIluminación 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 Fixation du tube optique du télescope au trépied Déplacement manuel de la longue vue de voyageAlignement du chercheur Installation du renvoi coudé et de l’oculaireInstallation du chercheur Calcul du grossissement Mise au pointConseils généraux d’observation Établissement du champ de visionLe système de coordonnées célestes Mouvement des étoiles Observation des planètes Observation de la LuneObservation du Soleil Conseils d’observation des planètesLe Star Hopping cheminement visuel Observation d’objets du ciel profondLA Lyre Véga Transparence Conditions de visibilitéLuminosité du ciel VisibilitéEntretien et nettoyage des éléments optiques Spécifications de la longue Telescopio da viaggio Indice analitico Avvertenze Figura 1-1 Travel Scope Facile vedere la Figura Approntamento del treppiediSpostamento manuale del Travel Scope Collegamento del tubo ottico del telescopio al treppiediAllineamento del cannocchiale cercatore Installazione del diagonale e dell’oculareInstallazione del cannocchiale cercatore Calcolo dell’ingrandimento Messa a fuocoSuggerimenti generali per l’osservazione Determinazione del campo visivoIl sistema di coordinate celesti Movimento delle stelle Osservazione dei pianeti Osservazione della LunaOsservazione del Sole Suggerimenti per l’osservazione dei pianetiStar Hopping Saltare da una stella all’altra Osservazione di oggetti del cielo profondoLira Limpidezza Condizioni di visibilitàIlluminazione 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.