Celestron Omni CG-4 Telescope Mount Telescope Basics

Celestron Omni CG-4 Telescope Mount Manual

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  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 1
    lens acts like a prism and breaks light down into the colors of the rainbow, a phenomenon known as chromatic aberration. To get around this problem, a two-element lens, known as an achromat, was introduced. Each element has a different index of refraction allowing two different wavelengths of light
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 2
    light-gathering power for the dollar. Because the light path is intercepted and reflected out to the side, you can have focal lengths up to 1000 mm and still enjoy a telescope that is relatively compact and portable. A Newtonian Reflector telescope offers such impressive light-gathering
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 3
    them difficult to see. If you turn the focus knob too quickly, you can go right through focus without seeing the image. To avoid this problem, your first astronomical target should be a bright object (like the Moon or a planet) so that the image is visible even when out of focus. Critical
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 4
    can greatly enlarge the image, but remember that the contrast and brightness will be low due to the high magnification. High powers can be used occasionally when conditions allow - you will achieve the power but the image will be dark with low contrast because you have magnified the object to
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 5
    Notions fondamentales sur les télescopes FRANÇAIS Un télescope est un instrument qui collecte et focalise la lumière. La manière dont la lumière est focalisée est déterminée par le type de modèle optique. Certains télescopes (connus sous le nom de lunettes) utilisent des lentilles là où les té
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 6
    lumière, offrant ainsi un pouvoir de convergence des rayons lumineux plus important pour le prix. Étant donné que la trajectoire des rayons lumineux est interceptée et réfléchie sur le côté, il est possible d'avoir des distances focales allant jusqu'à 1000 mm avec un télescope relativement compact
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 7
    effectuer la mise au point de votre lunette ou télescope newtonien, il suffit de tourner le bouton de mise au point situé directement sous le support de l'oculaire. Le mécanisme de mise au point du Schmidt-Cassegrain contrôle le miroir primaire qui est monté sur une bague coulissant d'avant en
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 8
    utile pour un ciel ordinaire. En règle générale, on utilise un grossissement de 60 pour chaque pouce (25,4 mm) d'ouverture. Par exemple, le télescope est supérieure à 4 pouces de diamètre. En multipliant 4 par 60 donne un grossissement maximal utile de 240 de puissance. Bien que ce soit le
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 9
    Información básica sobre el telescopio ESPAÑOL Un telescopio es un instrumento que recoge y enfoca la luz. La naturaleza del diseño óptico determina cómo se enfoca la luz. Algunos telescopios, conocidos como refractores, utilizan lentes y otros, conocidos como reflectores (newtonianos), utilizan
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 10
    hacia el lateral, puede tener distancias focales de hasta 1000 mm y todavía disfrutar de un telescopio portátil y relativamente compacto. Un telescopio reflector Newtoniano ofrece estas impresionantes características de absorción de luz que se puede interesar seriamente en la astronomía del espacio
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 11
    Orientación de imágenes La orientación de imágenes cambia de acuerdo a la forma en que el ocular se inserte dentro del telescopio. Cuando se utiliza una lente a 90º con los refractores y los Schmidt-Cassegrain, la imagen no estará invertida de arriba abajo pero estará invertida de izquierda a
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 12
    puede utilizar por cada pulgada de apertura. Por ejemplo, el telescopio está por encima de 4 pulgadas de diámetro. Multiplicar por 4 60 da una ampliación máxima útil de 240 de energía. Aunque este es el máximo aumento útil, la mayoría de las observaciones se realizan en el rango de 20 a 35 por cada
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 13
    Sie dann die SchmidtCassegrain und Maksutov Teleskope beiden Spiegeln und Linsen. Jedes optische Design ist im Folgenden kurz erläutert: Um dieses Problem zu vermeiden, wurde eine Zwei-ElementLinse, die unter der Bezeichnung Achromatlinse bekannt ist, eingeführt. Jedes Element hat einen anderen
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 14
    sich Brennweiten von bis zu 1000 mm realisieren, wobei das Teleskop trotzdem noch relativ kompakt und portabel gehalten werden kann. Ein Newton-Reflektor-Teleskop liefert so beeindruckende Lichtsammeleigenschaften, dass Sie selbst mit einem bescheidenen Budget ein ernsthaftes Interesse an der Deep-
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 15
    daher schwer zu sehen. Wenn Sie den Fokussierknopf zu schnell drehen, können Sie die Scharfstellung verpassen, ohne das Bild zu sehen. Um dieses Problem zu vermeiden, sollte Ihr erstes astronomisches Ziel ein helles Objekt (z.B. der Mond oder ein Planet) sein, so dass das Bild sichtbar ist, selbst
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 16
    maximalen nützlichen Vergrößerung. Die allgemeine Regel ist, dass eine Vergrößerungsleistung von 60 für jeden Zoll Blendenöffnung verwendet werden kann. Zum Beispiel das Teleskop oben ist 4 Zoll im Durchmesser. Multipliziert man 4 durch 60 ergibt eine maximale nützliche Vergrößerung von 240 Macht.
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 17
    Nozioni basilari sul telescopio ITALIANO Il telescopio è uno strumento che raccoglie e mette a fuoco la luce. La natura del modello ottico usato determina il modo in cui la luce viene focalizzata. Alcuni telescopi, noti come rifrattori, usano lenti; altri, noti come riflettori (di Newton), Il
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 18
    telescopio. Poiché il percorso della luce viene intercettato e riflesso verso il lato del telescopio, si possono avere lunghezze focali che arrivano anche a 1000 mm con un telescopio relativamente piccolo e portatile. Un telescopio riflettore di Newton offre caratteristiche straordinarie di raccolta
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 19
    Orientamento dell'immagine L'orientamento dell'immagine cambia a seconda di come l'oculare viene inserito nel telescopio. Quando si usa il prisma diagonale stellare con telescopi rifrattori e Schmidt-Cassegrain, l'immagine non è capovolta, ma è invertita lateralmente (cioè si ottiene un'immagine
  • Celestron Omni CG-4 Telescope Mount | Telescope Basics - Page 20
    se questo è l'ingrandimento utile massimo, la maggior parte delle osservazioni viene eseguita nel range da 20 a 35 per ogni pollice di apertura, che è 80 a 140 volte per il telescopio utilizzato nell'esempio. Si può determinare l'ingrandimento del proprio telescopio nello stesso modo. Una nota sull'
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1
T
ELESCOPE
B
ASICS
ENGLISH
A telescope is an instrument that collects and focuses light.
The nature of the optical design determines how the light is
focused. Some telescopes (known as refractors) use lenses and
other telescopes, known as reflectors (Newtonians), use mirrors.
Then, the Schmidt-Cassegrain and Maksutov telescopes use
both mirrors and lenses. Each optical design is briefly
discussed below:
A
Newtonian
reflector uses a single concave mirror as its
primary mirror. Light enters the tube traveling to the mirror
at the back end. There light is bent forward in the tube to a
single point, its focal point. Since putting your head in front
of the telescope to look at the image with an eyepiece would
keep the reflector from working, a flat mirror called a
diagonal
intercepts the light and points it out the side of the tube at
right angles to the tube. The eyepiece is placed there for
easy viewing.
Newtonian Reflector telescopes replace heavy lenses with
mirrors to collect and focus the light, providing much more
Developed in the early 1600s, the
refractor
is the oldest
telescope design. It derives its name from the method it uses
to focus incoming light rays. The refractor uses a lens to bend
or refract incoming light rays, hence the name. Early designs
used single element lenses. However, the single lens acts like
a prism and breaks light down into the colors of the rainbow,
a phenomenon known as chromatic aberration. To get around
this problem, a two-element lens, known as an achromat, was
introduced. Each element has a different index of refraction
allowing two different wavelengths of light to be focused at the
same point. Most two-element lenses, usually made of crown
and flint glasses, are corrected for red and green light. Blue
light may still be focused at a slightly different point. Higher
priced units use ED (low dispersion) or apochromatic (APO)
optical designs to virtually eliminate chromatic aberration.
T
HE
N
EWTONIAN
T
HE
R
EFRACTOR
A
CUTAWAY
VIEW
OF
THE
LIGHT
PATH
OF
THE
R
EFRACTOR
OPTICAL
DESIGN
Focal
Plane
Focuser
Objective
Lens