User manual CELESTRON G-9.25 Instruction Manual

[. . . ] The G-9 1/4 Model #11037 INSTRUCTION MANUAL TABLE v OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A Word of Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 The Schmidt-Cassegrain Optical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ASSEMBLING YOUR G-9 1/4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] For more information on both these finderscopes, refer to the Optional Accessories section of this manual or ask for the Celestron accessory catalog (#93685). Aligning the R. A. Setting Circle Before you can use the setting circles to find objects in the sky you need to align the R. A. The declination setting circle is aligned during the polar alignment process. setting circle you will need to know the names of a few of the brightest stars in the sky . If you don't, they can be learned by using the Celestron Sky Maps (#93722) or consulting a current astronomy magazine. Locate a bright star near the celestial equator. The farther you are from the celestial pole the better your reading on the R. A. The star you choose to align the setting circle with should be a bright one whose coordinates are known and easy to look up. (For a list of bright stars to align the R. A. setting circle, see the list at the back of this manual. ) 2. Look through the main telescope and see if the star is in the field. Start the optional motor drive so that it will track the star. If you are not using a motor drive the star will start to drift out of the field and you will need to center it again before setting the R. A. Rotate the circle until the proper coordinates line up with the R. A. indicator (the zero mark on the vernier scale). As mentioned above, the declination setting circle is aligned during the process of polar alignment. There is no need to align it in the same manner as the R. A. Once you have finished this process you are ready to use the setting circles to locate objects in the night sky. See the section on "Using the Setting Circles" for specific information. Astronomy Basics · 33 CELESTIAL OBSERVING With your telescope set up, you are ready to use it for celestial observing. This section covers visual observing of 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 to find. Often, it is a temptation to look at the Moon when it is full. At this time, the face we see is fully illuminated and its light can be overpowering. [. . . ] Celestron International (CI) warrants this telescope to be free from defects in materials and workmanship for one year. CI will repair or replace such product or part thereof which, upon inspection by CI, is found to be defective in materials or workmanship. As a condition to the obligation of CI to repair or replace such product, the product must be returned to CI together with proof-of-purchase satisfactory to CI. The Proper Return Authorization Number must be obtained from CI in advance of return. [. . . ]