Celestron 70 - Manuals

5 10) Loosen the set screw on the star diagonal so that it 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 Figure B 11) Locate the StarPointer finderscope. Remove the knurled nuts on the threaded posts...

6 2. To turn on the Star Pointer, slide the On/Off switch to the 1 "On" position. To increase the brightness level of the red dot, slide the switch to the 2 "On" position. 3. Locate a bright star or planet and center it in a low power eyepiece in the main telescope. 4. With both eyes...

7 Actual image as seen with the unaided eye Inverted image, as viewed with the eyepiece directly in telescope 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 instrument that collects and focuses light. The nature of the optical design determines how the light is 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. For the most part, these r...

9 description of stellar motions also applies to the southern hemisphere except all stars south of the celestial equator move around the south celestial pole.) Latitude Scales The easiest way to polar align a telescope is with a latitude scale. Unlike other methods that require you to find the celes...

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.A. or DEC. You do not want to move th...

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 set...

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 the telescope. In equation format, the formula looks like this: Magnifi...

13 CELESTIAL OBSERVING Now that your telescope is set up, you’re ready to use it for observing. This section covers visual observing for both solar system and deep-sky objects. Observing the Moon In the night sky, the moon is a prime target for your first look because it is extremely bright and easy...

14 Observing Deep-Sky Objects Deep-sky objects are simply those objects outside the boundaries of our solar system. They include star clusters, planetary nebulae, diffuse nebulae, double stars and other galaxies outside our own Milky Way. Unlike the sun, moon and our five major planets, most deep-sk...

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 Aperture: 70mm (2.8") 90mm (3.5") Focal Length: 900mm 1000mm F/ratio: f/13 f/11 Focuser Rack and Pinion Rack and Pinion Standard Oculars (or Eyepieces) 20mm 1¼" (45x) 10mm 1¼"...

19 CELESTRON TWO YEAR WARRANTY A. Celestron warrants this telescope to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship. As a condit...