**Which Telescope Lens Is Stronger 10Mm Or 20Mm**. 10mm or 25mm eyepiece, which is more powerful? In terms of cost, the 10mm lens is generally more affordable than the 20mm lens.

In the case of eyepiece focal length, that is not the case. The main difference is that they’re both built for different outcomes. Web the focal length of eyepieces is also measured in millimeters, and the higher the focal length, the greater the magnification you will get from your telescope.

### Note That The Same Eyepiece Used With A Different Focal Length Scope Will Give Different Powers.

10mm or 25mm eyepiece, which is more powerful? 10mm lenses gather less light than 20mm lenses, but they also provide a higher magnification. Take your telescope's focal length in millimeters and divide it by the focal length of the eyepiece, also in millimeters.

### A Telescope With A Focal Length Of 500Mm Divided By A 10Mm Eyepiece Will Yield 50X Magnification.

Telecompressor lenses can shorten the effective focal length of some telescopes, lowering the magnification of a given eyepiece used with that telescope. 20mm lenses gather more light, but they provide a. A 10mm eyepiece would provide twice as much magnification as a 20mm eyepiece.

### Web I Just Bought A Celestron Travel Scope 70 And It Comes With A 20Mm And A 10Mm Eyepiece.

Web the following chart will help you figure out two things what is your telescope’s highest useful magnification according to its aperture what is the eyepiece size you would need to reach that magnification for that second value, you will also need to know your telescope’s focal length. Web light from a star gathered by a telescope’s lens or mirror converges to a point that may be envisioned as the tip of a cone. An omni 4mm eyepiece with a 2x barlow lens will exceed your highest useful magnification at 325x.

### It Also Means That The Same Eyepiece Gives Different Magnifications On Different Scopes.

Web the main difference between 10mm and 20mm telescope lenses is the amount of light that each lens can gather. The focal length of your telescope eyepieces, in millimeters (mm) has an inverse relationship with magnification. Web the math is easy division;

### Web What Is The Largest Telescope Eyepiece Size?

Web basically the 10mm gives twice the magnification of the 20mm.the 10mm is best used for looking at the moon and planets. Telescope focal length (mm) =. This means that a smaller number on an eyepiece gives a higher magnification.