Bushnell 78-9003 manual Answers to Commonly Asked Questions

Models: 78-9003

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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 ice caps.

Venus--just like the moon, Venus changed phases from month to month. Some views of brilliant Venus appear as if you were looking at a distant crescent moon.

Nebulae--The Great Orion Nebula is a very well known night sky object. This and many others are brought to you by this telescope.

Star Clusters--View millions of stars densely packed in a cluster that resembles a ball.

Galaxies--One of the greatest and most interesting galaxies is our neighbor the Andromeda Galaxy. Enjoy this and many others. Much, much, more!

 

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ANSWERS TO COMMONLY ASKED QUESTIONS

 

 

 

1.

The image I see in the telescope is upside down

An upside-down and reversed image is a

 

and reversed from right to left ?

common characteristic of most astronomical

 

 

telescopes. Since telescopes are used for

 

 

astronomical viewing orientation is not important.

 

 

The image in the finderscope will also be upside

 

 

down and reversed.

 

 

 

2.

How do I determine the power my telescope ?

The power of your telescope can be determined

 

 

by dividing the focal length of the objective lens

 

 

by the focal length of the eyepiece. The

 

 

eyepiece focal length is the number printed on

 

 

the eyepiece. (For example: 700 ÷ 20 = 35X)

 

 

 

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 700mm. Telescope focal lengths

 

 

range from 600mm to 900mm on Bausch &

 

 

Lomb, Bushnell and Jason 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 150X and higher.

 

 

 

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 can’t see anything Check to see if objective lens cover has been removed.

Try to view an object that is 200 or more yards

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Bushnell 78-9003 manual Answers to Commonly Asked Questions