Eyepieces

Improve your viewing experience with the right eyepieces

A good eyepiece is essential for any astronomer. Whether you are viewing planets, nebulae or the moon, the eyepiece determines how sharp the image is, how much of the sky you see and how comfortable you look.

In our assortment you will find eyepieces with different focal lengths and fields of view.

• High magnification (2-10 mm): choose detail if you want to see rings of Saturn or craters on the moon.

• Medium magnification (10-15 mm): Versatile for both planets and bright nebulae.

• Wide image (15-30 mm): ideal for surveying large star clusters and nebulous areas at once.

All of our eyepieces have multiple coatings that minimize unwanted light reflections and maximize clarity. Many models also have threads for filters, so you can easily add contrast-enhancing color filters or moon filters.

20 Frequently Asked Questions about Eyepieces

1. What does the focal length of an eyepiece do?
   The shorter the distance (mm), the greater the magnification; longer distances actually give a wider image.

2. Which eyepiece is suitable for planets?
   A 4-8 mm eyepiece is ideal for seeing details on Jupiter and Saturn well.

3. How do I choose an eyepiece for nebulae?
   Go for 20-30 mm; you'll see a larger chunk of the sky in one image.

4. What is the difference between a 50° and an 82° field of view?
   A higher number means you have more “view,” almost as if you were looking with the naked eye.

5. Why are coatings important?
   They ensure that little light is lost, making stars appear brighter and more contrasty.

6. Do I need a separate filter for each eyepiece?
   Not necessarily; most filters screw easily onto different eyepieces.

7. Can I use multiple eyepieces at the same time?
   Only one at a time in your focuser, but you can quickly change depending on the object.

8. How many eyepieces do I need as a beginner?
   Two: one short for planets (e.g., 6 mm) and one long for deep-sky (e.g., 25 mm).

9. Does brand matter with eyepieces?
   Yes, more expensive brands often just have sharper edges and better coatings.

10. Are zoom eyepieces useful?
    They offer flexibility, but sometimes have a slightly smaller field of view than fixed eyepieces.

11. What is the best way to store my eyepieces?
    In a soft bag with foam pockets or in a hard case with foam inlay.

12. What is eye relief and why is it important?
    This is the distance from your eye to the eyepiece; comfortable viewing without pressure on your eyebrows.

13. Can I clean eyepieces with camera lens cleaner?
    Rather, use a special optical agent and a soft cloth to avoid scratches.

14. How often should I clean my eyepieces?
    Only when you see stains or dust, to avoid excessive cleaning.

15. What is parfocal?
    Eyepieces are parfocal if they stay in focus when changed without having to refocus.

16. Why does an 82° eyepiece cost more than a 50° eyepiece?
    A wider field of view requires more complex glass shapes and additional coatings.

17. Can I use a 2″ eyepiece in a 1¼″ focuser?
    Not without a special adapter; the opening varies.

18. What is an ortho-ocular?
    A simple type of eyepiece with a very sharp image, but a somewhat smaller field of view.

19. Do I need adapters for filters on my eyepiece?
    Yes, most eyepieces have a filter thread (usually 1.25″) that filters screw onto.

20. How do I know if an eyepiece fits my telescope?
    Check the focuser aperture (1.25″ or 2″) and measure whether you have backfocus left with all accessories.