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length is the number printed on the eyepiece.  (For

example: 900 

÷

 20 = 45X)

3.

 

Where do I find the Telescope Focal Length

 

The telescope focal length is the same focal

length as the objective focal length. For this

telescope it is 900mm. Telescope focal lengths

range from 600mm to 1200mm on Bausch & Lomb

and Bushnell telescopes.

4.

 

What can I see with my telescope ?

 

Telescopes with power ranging from 25X to

50X can be used to view Star Clusters and Nebulae.

90X to 120X telescope can view galaxies. Most

planets can be seen at any magnification.

5.

 

What do the numbers on the eyepiece mean ?

 

The numbers on the eyepiece represents the

“focal Length” of the eyepiece.

 
 
 
 
 
 

 

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.

 

Try to view an object that is 200 or more

yards away.

 

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

Содержание VOYAGER 78-4500

Страница 1: ...ctly At The Sun With Your Telescope Permanent Damage To Your Eyes May Occur 1 Rack Pinion Focusing System 5 Dobsonian Base Azimuth Bearing 2 Reflector Body 6 Primary Mirror 3 Altitude Bearing 7 Finderscope 4 Dobsonian Side Panel 8 1 25 Format Eyepiece 1 2 3 4 5 6 7 8 ...

Страница 2: ...you travel on your journey through the universe READ THROUGH ASSEMBLY INSTRUCTION BEFORE YOU ASSEMBLE YOUR TELESCOPE TELESCOPE ASSEMBLY INSTRUCTIONS Your Bushnell Voyager Dobsonian Telescope comes preassembled from the factory By simply attaching the accessory finderscope and eyepiece you will be ready to explore ATTACH FINDERSCOPE 1 Remove Reflector Telescope Assembly 2 and Finderscope 7 from car...

Страница 3: ...rmat eyepiece 8 and establish a well defined target see focusing telescope section 2 Looking through Finderscope 7 alternate tightening each Finderscope Adjustment Screw surrounding the Finderscope 7 in the Finderscope Mount until crosshairs of Finderscope 7 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 8 ...

Страница 4: ... that the earth is rotating about its axis As a result you may notice that after a few minutes or a few seconds depending on what power you are viewing at the objects in your telescope will move At higher magnifications especially you will notice that the moon or Jupiter will race right out of the field of view To compensate just move the fine adjustment controls on your telescope to track it in t...

Страница 5: ...rk stripes or bands both above and below its equator These are the north and south equatorial belts Also interesting are Jupiter s four major moons Pay close attention to their positions from night to night They appear to be lined up on either side of Jupiter Mars The Great Red Planet appears as a reddish orange disk Look at different times of the year and try to catch a glimpse of the white polar...

Страница 6: ... What do the numbers on the eyepiece mean The numbers on the eyepiece represents the focal Length of the eyepiece 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 obj...

Страница 7: ... not cover damages caused by misuse or improper handling installation or maintenance of the product Any return made under this warranty must be accompanied by the items listed below 1 A check in the amount of 15 00 to cover the cost of handling 2 Name and address for product return 3 An explanation of the defect 4 Product should be well packed in a sturdy outside shipping carton to prevent damage ...

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