Instruction/ maintenance manual of the product 70 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.
An important point after buying a device Celestron 70 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Celestron 70 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Celestron 70 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Celestron 70 you will learn all the available features of the product, as well as information on its operation. The information that you get Celestron 70 will certainly help you make a decision on the purchase.
If you already are a holder of Celestron 70, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Celestron 70.
However, one of the most important roles played by the user manual is to help in solving problems with Celestron 70. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Celestron 70 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
