User manual BUSHNELL VOYAGER 78-6000

[. . . ] READ THROUGH ASSEMBLY INSTRUCTION BEFORE YOU ASSEMBLE YOUR TELESCOPE UNPACKING YOUR TELESCOPE NOTE: YOUR DOBSONIAN TELESCOPE HAS BEEN SHIPPED IN TWO CARTONS. TELESCOPE ASSEMBLY INSTRUCTIONS Remove all components from the cartons and identify all components. You will need a phillips screwdriver, and two adjustable wrenches for assembly. Remove the Dobsonian base components from the carton and verify that all five components are included. [. . . ] Looking through Finderscope (8), alternate tightening each Finderscope Adjustment Screw surrounding the Finderscope (8) in the Finderscope Mount until crosshairs of Finderscope (8) are precisely centered on the same object already centered in Main Telescope Tube's field of view as seen through the 1. 25" Format Eyepiece (9). Now, objects located first with the Finderscope (8) will be centered in the field of view of the main telescope as seen through the 1. 25" Format Eyepiece (9). 3. COLLIMATING THE TELESCOPE Good alignment or collimation of the telescope's optical components will guarantee the most optimum viewing. This telescope body comes preassembled from the factory and precollimated. However, due to its great importance there are a few steps that you can take to ensure that your telescope is properly collimated. Remove the 1. 25" Format Eyepiece (9) from the Rack and Pinion Focusing Mechanism (1). Look into the Rack and Pinion Focusing Mechanism (1) with the eyepiece removed. You will see the secondary mirror located a few inches inside the end of the telescope tube (nearest the Rack and Pinion Focusing Mechanism). Since it is a mirror, you will see a reflection of the large primary mirror (7). Each image will be centered in a concentric set of images starting with the image of the Primary Mirror (7), the secondary mirror, and your eye. Please refer to the diagram to see what to expect. 3. 4. If the image of your eye is centered in the reflection of the secondary mirror, your secondary mirror is collimated. If it is off to one side, then secondary mirror adjustment will be required. By removing the plastic cap on the secondary mirror base at the end of the telescope tube nearest the Rack and Pinion Focusing Mechanism (1), you will see three screw heads. By adjusting these three screws very slowly and carefully, the secondary mirror will reflect an image of your eye that is perfectly centered in the reflection of the secondary mirror. Once secondary mirror collimation is confirmed, you will need to verify Primary Mirror (7) collimation. If the image of the secondary mirror is centered in the reflection of the primary mirror, then your primary mirror is collimated. If it is off to one side, then Primary Mirror (7) adjustment will be required. By locating the Primary Mirror (7) you will see three screw heads on the bottom end of the telescope furthest from the Rack and Pinion Focusing Mechanism (1). By adjusting these three screws very slowly and carefully, the Primary Mirror (7) will reflect an image of the secondary mirror that is perfectly centered in the reflection of the Primary Mirror (7). Your telescope is now ready to deliver the best images possible. 5. 6. Enjoying Your New Telescope 1. This is an object sure to please any budding astronomer or experienced veteran. When you have developed proficiency at this level, other objects become good targets. The first thing you need to do after assembling the telescope as planned is center the desired object in the finderscope's cross hairs. [. . . ] · The numbers on the eyepiece represents the "focal Length" of the eyepiece. 2. How do I determine the power my telescope ? 3. Where do I find the Telescope Focal Length 4. What can I see with my telescope ? 5. What do the numbers on the eyepiece mean ? TROUBLESHOOTING GUIDE If after you have set-up your new telescope you are unable to see any objects, use this Quick Reference guide to help you to understand the cause of the problem and quickly determine a remedy 1. I've completed the set-up yet I cannot see anything · Check to see if objective lens cover and all other lens covers have been removed. If there is more than one eyepiece included with the telescope, use the lowest power (highest number) eyepiece to begin viewing. Use the Rack & Pinion Focusing Mechanism to bring the object you are trying to view into focus · · · Telescope LIFETIME LIMITED WARRANTY Your telescope is warranted to be free of defects in materials and workmanship for the lifetime of the original owner. The Lifetime Limited Warranty is an expression of our confidence in the materials and mechanical workmanship of our products and is your assurance of a lifetime of dependable service. [. . . ]