How To Calculate Maginifaction Of A Telescope Extension Tube. 1: Atmospheric seeing conditions (the sky) often limits the maximum usable magnification to 250-350x. 2: An exit pupil size (diameter of light beam as it exits eyepiece) over 7.5mm.

If you are looking to calculate the magnification of a telescope extension tube, then you have come to the right place. Telescopes vary in size and shape, so it is important to understand the basics of magnification before you decide on what telescope to buy. In this article, we will discuss the steps involved in calculating the magnification of a telescope extension tube.

The first step is to measure the focal length of the telescope. The focal length is the distance from the primary lens to the focal point. To measure this, you can use a ruler or a caliper. Place the ruler or caliper at the center of the primary lens and measure to the focal point. Once you have the focal length, you can use it in the formula for magnification.

The next step is to measure the distance from the primary lens to the telescope extension tube. This distance is known as the extension factor. To measure this, you can use a ruler or a caliper. Place the ruler or caliper at the center of the primary lens and measure to the end of the telescope extension tube. Once you have the extension factor, you can use it in the formula for magnification.

The formula for calculating the magnification of a telescope extension tube is: Magnification = Extension Factor / Focal Length. To use the formula, simply divide the extension factor by the focal length. This will give you the magnification of the telescope extension tube.

If you are looking to buy a telescope extension tube, it is important to consider the magnification. Telescopes come in a variety of sizes and shapes, so it is important to understand the basics of magnification before you decide on what telescope to buy. By following the steps outlined above, you can easily calculate the magnification of a telescope extension tube.

When it comes to choosing a telescope, it is important to consider your budget, the size of the telescope, and the magnification. If you are looking to buy a telescope extension tube, it is important to calculate the magnification and make sure it is suitable for your needs. With the right information, you can make sure you get the best telescope for your budget.

## How to calculate magnification

Is it possible to add and extension tube to an eyepiece with the results being a lower magnification factor? No, magnification = FL_scope/FL_eyepiece The only thing. The extension tube calculator calculates new magnification, new closest focusing distance and effective f/stop when using tubes. Uses thin lens formula: 1/f = 1/d. This gives you a magnification of 100/25 or four times. Now, let’s say you add a 12-inch extension tube. This increases the distance between the objective lens and., How To Calculate Maginifaction Of A Telescope Extension Tube.