Manuel d'utilisation / d'entretien du produit 70 du fabricant Celestron
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F F I I R R S S T T S S C C O O P P E E 7 7 0 0 & & 9 9 0 0 E E Q Q T T E E L L E E S S C C O O P P E E I I N N S S T T R R U U C C T T I I O O N N M M A A N N U U A A L L F F i i r r s s t t .
2 F F i i r r s s t t s s c c o o p p e e R R e e f f r r a a c c t t o o r r 70mm EQ shown 1 2 6 4 7 8 9 10 11 12 13 14 16 17 3 5 15.
3 IDENTIFYING P ARTS OF YOUR FIRSTSCOPE 1. Telescope Tube 10. Tripod 2. Tube Ring 11. Counterweight 3. Star Pointer Finderscope 12. Counterweight Bar 4. Eyepiece 13. Right Ascension Slow Motion Cable 5. Star Diagonal 14. Right Ascension Setting Circle 6.
4 A A s s s s e e m m b b l l i i n n g g Y Y o o u u r r T T e e l l e e s s c c o o p p e e 1) Your Firstscope telescope shoul d include all of the foll owing: a. Tripod with center support bracket b. Telescope tube with tube ring at tached c. Equatorial mount head d.
5 10) Loosen the set screw on the star diagonal so that i t does not obstruct the inner diameter of the barrel. Insert the chrome barrel of the 20mm eyepiece into the diagonal and tighten the set screw. See Fi gure B 11) Locate the StarPointer finderscope.
6 2. To turn on the Star Poin ter, slide the On/Off switch to the 1 "On" position. To in crease the brightness level o f the red dot, slide the switch t o the 2 "On" position. 3. Locate a bright star or planet and center it in a low power eyepiece in the main telescope.
7 Actual image as seen with the unaided eye Inverted image, as viewed with the eyepiece directly in telescop e T T e e l l e e s s c c o o p p e e B B a a s s i i c c s s A telescope is an instrum ent that coll ects and focuses light. The nature of the optical design determ ines how t he light i s focused.
8 The Celestial Coordinate System To help find objects in the sky, astronomers use a celestial coordinate system that is similar to our geographical coordinate system here on Earth. The celestial coordinate system has poles, lines of longitude and latitude, and an equator.
9 description of stellar motions also applies to the southern hemisphere except all stars south of the celestial equator move aro und the south celestial pole.
10 3. Adjust the mount in altitude and/or azimuth until Polaris is in the field of view of the finder. 4. Center Polaris in the field of the telescope using the fine adjustment controls on the mount. Remember, while Polar aligning, do NOT move the telescope in R.
11 Using the Setting Circles Setting Circles are dials (or gauges) for right ascension and declination that allow you to locate celestial objects easily from their coordinates as listed in a star chart or atlas. 1. The declination setting circle (#16) is scaled in degrees and the right ascension setting circle is incremented in minutes.
12 M M A A G G N N I I F F I I C C A A T T I I O O N N ( ( P P O O W W E E R R ) ) The magnification (or power) of a telescope is variable depending upon the focal length of the eyepiece being used along with the focal length of t he telescope.
13 CELESTIAL OBSER VING Now that your telescope i s set up, you’re ready to use i t for observing. This section covers vi sual observing for both solar system and deep-sky object s. Observing the Moon In the night sky, the moon is a prime target for your first look because it is extrem ely bright and easy to find.
14 Observing Deep-Sky Objects Deep-sky objects are simpl y those objects outside the boundaries of our sol ar system. They include star clusters, planet ary nebulae, diffuse nebulae, double stars and other gal axies outside our own Mi lky Way.
15 condition and five the best. Seeing condi tions can be classified in one of three cat egories. The defini tions of these categories are based on the causes of the different seeing condi tions. Type 1 seeing conditions are characterized by rapid changes in the image seen through the telescope.
16 S S P P E E C C I I F F I I C C A A T T I I O O N N S S #21076 #21085 Optical System: Refractor Refractor Ap er tu re: 70 mm (2 .8 ") 90 mm (3 .
17 • Ultima - Ultima is our 5-element, wide field eyepiece design. In the 1-1/4" barrel diameter, they are available in the following focal lengths: 5mm, 7.
18 black. You can see detail in sunspots, bright faculae near the limb and the mottled areas known as granules with these filters . The Sun o ffers constant ch anges and will keep your observing interestin g and fun. Ev en small aperture telescopes can enjoy features of the Sun.
19 CELESTRON TWO YEAR W ARRANTY A. Celestron warrants this telescope to be free from defects in m aterials and workmanship for two years. Celestron will repa ir or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in m aterials or workm anship .
Celestron 2835 Columbia St reet Torrance, CA 90503 U.S.A. Tel. (310) 328-9560 Fax. (310) 212-5835 Web site at www.celestron.com Copyright 2004 Ce lestron All rights reserved. (Products or instructions m ay change without notice or obl igation.) Item # 21076-INST $10.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Celestron 70 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Celestron 70 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Celestron 70, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Celestron 70 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Celestron 70, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Celestron 70.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Celestron 70. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Celestron 70 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
