You can't determine the magnification of a refracting telescope just by saying "the image." Magnification depends on the specific lenses used in the telescope. Here's how it works:

Magnification of a Refracting Telescope

The magnification of a refracting telescope is calculated by dividing the focal length of the objective lens (the main lens at the front) by the focal length of the eyepiece:

Magnification = Focal Length of Objective Lens / Focal Length of Eyepiece

Example:

* Objective Lens Focal Length: 1000mm

* Eyepiece Focal Length: 25mm

Magnification = 1000mm / 25mm = 40x

Key Points:

* Different Eyepieces, Different Magnifications: Telescopes usually come with multiple eyepieces. Each eyepiece has a different focal length, resulting in different magnifications.

* Higher Magnification = Smaller Field of View: As you increase magnification, the field of view (the area you can see through the telescope) gets smaller.

* Maximum Useful Magnification: There's a limit to how much you can magnify an object before the image becomes blurry due to factors like atmospheric conditions and the quality of the optics.

To find the magnification of your telescope:

1. Look for the focal length of your objective lens. This is usually written on the telescope itself.

2. Determine the focal length of the eyepiece you are using. This information should be on the eyepiece.

3. Divide the objective lens focal length by the eyepiece focal length. This gives you the magnification.