| ANSWERS TO COMMONLY ASKED QUESTIONS |
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1. The image I see in the telescope is upside down and | ∙ An | is a | common | ||
| reversed from right to left ? | characteristic of all refractor telescopes. Since | |||
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| telescopes are used for astronomical viewing | |||
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| orientation is not important. An erecting lens can be | |||
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| purchased separately | that will allow | you | to see a |
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| “natural” image. The image in the finderscope will | |||
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| also be upside down and reversed. |
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2. | How do I determine the power my telescope ? | ∙ The power of your | telescope can be | determine by | |
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| dividing the focal length of the objective lens by the | |||
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| focal length of the eyepiece. The eyepiece focal length | |||
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| is the number printed on the eyepiece. (For example: | |||
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| 1000 ÷ 25 = 40X) |
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3. | Where do I find the Telescope Focal Length | ∙ The telescope focal length is the same focal length as | |||
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| the objective focal length. For this telescope it is | |||
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| 900mm. Telescope focal lengths range from 450mm | |||
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| to 1000mm on Bausch & Lomb, Bushnell and Jason | |||
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| telescopes. Typical | focal lengths | are | 600mm, |
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| 700mm, and 900 (Jason); 450, 750 and 910 | |||
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| (Bushnell); 900, 910 and 1000 for Bausch & Lomb. | |||
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4. | What can I see with my telescope ? | ∙ Telescopes with power ranging from 25X to 50X can | |||
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| be used to view Star Clusters and Nebulae. 90X to | |||
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| 120X telescope can view galaxies. Most planets can | |||
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| be seen at 150X and higher. |
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5. | What do the numbers on the eyepiece mean ? | ∙ The numbers on the | eyepiece represents the “focal | ||
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| Length” of the eyepiece. |
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TROUBLESHOOTING GUIDE
If after you have
Reference guide to help you to understand the cause of the problem and quickly determine a remedy
1.I’ve completed the
∙Check to see if objective lens cover has 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 (3) to bring the object you are trying to view into focus
