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The magnification (or power) of a telescope varies depending upon the focal length of the eyepiece being used and the 
focal length of the telescope. 
 
The PowerSeeker

2

 60 telescope has a focal length of 700mm and comes with a 20mm 1¼" eyepiece.  To calculate 

magnification, use the following formula, in which FL = focal length: 
 

FL (telescope) in mm

FL (eyepiece) in mm

 

Magnification =

 
 
Therefore, if you use the 20mm eyepiece your magnification is 700/20 = 35x.  The same formula can be applied to 
any of your eyepieces. 

Important! 

 
Magnification through any telescope has its limits.  These limits are determined by the laws of optics and the nature of 
the human eye.  Most of your viewing will be done in the range of 35x to 120x.  Higher powers are used mainly for 
lunar and sometimes planetary observing where you can greatly enlarge the image and the atmospheric conditions are 
near perfect.  The images at extremely high powers magnify the image, but remember that the contrast will be very 
low due to the high magnification.  For the brightest images with the most contrast, start by using the lower power 
eyepiece with a smaller image scale. 
 
The following magnification levels can be achieved when using the standard eyepiece in conjunction with the 3x 
Barlow lens: 
 

PowerSeeker 60

2

 

Eyepiece  Magnification 

Mag. with 3x Barlow 
Lens 

20mm 35x 

105x 

12.5mm 56x 

168x 

4mm 175x 

525x 

 

PowerSeeker 70

2

 

Eyepiece  Magnification 

Mag. with 3x Barlow 
Lens 

20mm 45x 

135x 

12.5mm 72x 

216x 

4mm 225x 

675x 

 
 

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With proper care, your telescope should rarely need any maintenance work.  To maintain your telescope in the best 
possible condition, observe the follow suggestions: 
 
1.

 

When your telescope isn’t in use, replace all lens covers to keep dust and contaminants off the optical surfaces. 

 
2.

 

A small amount of dust on any optical surface isn’t a problem and doesn’t need to be removed.  If the dust builds 
up, then use a can of compressed air and a camels hair brush to remove the dust.  To remove fingerprints or other 
contaminants, use an optical cleaning kit or the 

Celestron

 Lens Pen (#93575). 

 
 
3.

 

If the inside of the objective lens needs cleaning, it should be done by a professional.  Either have your instrument 
serviced by a telescope repair facility or return it to the factory for servicing. 

 
 
 
 

 

6

Содержание PowerSeeker2 60 21028

Страница 1: ...P Po ow we er rS Se ee ek ke er r2 2 6 60 0 P Po ow we er rS Se ee ek ke er r2 2 7 70 0 I IN NS ST TR RU UC CT TI IO ON N M MA AN NU UA AL L 2 2 1 1 0 0 2 2 8 8 2 2 1 1 0 0 2 2 9 9...

Страница 2: ...er telescope then assemble it following the easy instructions provided Next read over the operating instructions and become familiar with how your telescope works to prepare for hours of viewing enjoy...

Страница 3: ...ar re ed d PowerSeeker2 70 Shown 14 11 12 10 13 5 1 9 8 7 6 4 3 2 1 Objective Lens 8 Pan Handle 2 Optical Tube 9 Tripod Extension Screw 3 Finderscope 10 Center Leg Brace 4 Finderscope Pivot Arm 11 Acc...

Страница 4: ...nter leg brace 4 Thread the pan handle 8 into the hole on the side of the mount The pan handle not only allows you to move your telescope but will also lock the telescope in place when the handle is r...

Страница 5: ...nd de er rs sc co op pe e 1 Locate a distant daytime object and center it in a low power eyepiece in the main telescope 2 Look through the finderscope and take notice of the position of the same objec...

Страница 6: ...th the most contrast start by using the lower power eyepiece with a smaller image scale The following magnification levels can be achieved when using the standard eyepiece in conjunction with the 3x B...

Страница 7: ...w Violet Pale Blue s 8 15 47 82A Filters Eyepiece To enhance your visual observations of solar system objects Celestron offers a wide range of colored eyepiece filter sets that thread into the 1 1 4 o...

Страница 8: ...repair Further product malfunction or deterioration due to normal wear is not covered by this warranty CELESTRON DISCLAIMS ANY WARRANTIES EXPRESS OR IMPLIED WHETHER OF MERCHANTABILITY OF FITNESS FOR...

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