Telescope | Eyepieces

One of the understood aspects of telescope optical instruments when beginning astronomers start taking a look at telescopes is telescope eyepieces. The actual eyepiece itself can be confusing than lenses & mirrors & designs are simple to grasp.

Keep in mind, when you are taking a look at telescope eyepieces, you are fundamentally paying for the lenses in the eyepiece. The more an eyepiece costs, the better the lenses inside & the better the picture it creates.

Another aspect to think about when choosing telescope eyepieces is the apparent field of view. This is the apparent width of the picture, in degrees, which indicates how far a person needs to move their eye in order to look from one finish of the picture to the other. Fundamentally, it is a measure of the peripheral vision available to the person looking through the eyepiece. Depending on the design of the telescope eyepiece, the apparent field of view can range from 40 to 82 degrees.

Keep in mind also that picture quality of telescope eyepieces can be affected by the design of the eyepiece; Huygens eyepieces can generate chromatic aberrations, Erfle eyepieces can produce some ghost images, & Plossl eyepieces tend to have some astigmatism around the edges of the picture. That why it is better to understand the limits of each design & what kind of work each design is suited to.

Overall, telescope eyepieces are best judged through experience. It’s means that trying out several designs & models is the best way to figure out what works best. But, with a tiny trial & error, the right telescope eyepieces can make their way in to your telescope kit.