#Best telescope eyepieces how to#
#Best telescope eyepieces full#

There are different kinds of eyepieces with varying degrees of sophistication. You may also like: How big of a telescope do I need to see Pluto? Types of telescope eyepieces and their respective capabilities for observing planets However, with the help of an adaptor, you can use a 2-inch eyepiece with a telescope with a 1.25-inch focuser. If your telescope has a 1.25-inch focuser, only a 1.25-inch eyepiece would work.

The 0.965-inch eyepieces are mostly only popular in Japan. You’ll likely encounter three barrel sizes: 1.25 inches, 2 inches, and 0.965 inches. Barrel size and compatibilityīarrel size determines if the telescope eyepiece you purchased will work with your telescope focuser. So, you want to watch out for this metric in each telescope eyepiece you purchase, irrespective of its focal length. You’ll also need a minimum of 15mm eye relief to enjoy your stargazing experience. When it’s short, your viewing experience is uncomfortable. Ideally, this feature should be relatively long. You measure this distance from the point where you can see the entire field of view. This metric refers to the gap between your eyes and the eyepiece.

#Best telescope eyepieces full#

With this pairing, you should see the moon’s full disc and observe half of Orion’s belt. The interpretation is that when you use this pairing to view the night sky, the diameter of what you see would always be 1.25°. Therefore, the true field of view = 50°/40 = 1.25° Magnification = Telescope focal length / eyepiece focal length The first step is to calculate the total magnification of combining the two pieces using the below formula: Eyepiece apparent field of view (AFOV) = 50°.The best way to explain the above formula is through an example.Įxample 1: Let’s say a Plossl eyepiece with a 50mm focal length and a 50° field of view is paired with a telescope with a focal length of 2,000mm. True field of view = AFOV of eyepiece / magnification To calculate the field of view you can use the formula below. The true field of view is how much of the sky you can see when you attach the eyepiece to your telescope. When you couple an eyepiece to a telescope, you can calculate the true field of view for that pairing.

The AFOV measures how much of the night sky you can see when the eyepiece is not attached to a telescope. Apparent field of viewĮvery telescope eyepiece comes with a specification called the apparent field of view (AFOV). Assuming the image is captured from the same position, then Camera B will have a wider field of view. Camera A can only show my nose, while Camera B can show my whole face. Field of viewįield of view is an angular metric that describes how much of a planetary body you can see when an eyepiece has been paired with a telescope. These are field of view, eye relief, and barrel size. However, there are three features that we consider the most important. Telescope eyepieces have different features.

Takeaway: The best telescope eyepieces to amplify your telescope’s powers.

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#Best telescope eyepieces how to#

How to choose the right telescope eyepiece for viewing planets.How does eyepiece quality affect the ability to see details on planets?.Types of telescope eyepieces and their respective capabilities for observing planets.