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Eyepieces
for
Telescopes
Eyepieces in general
This is a short article. You will need "eyepieces" for your telescope.
Here's the way it works. The optical elements of the scope -- lens(es) and/or
mirror(s) focus the image of whatever you are viewing onto a spot. At this spot, you
must insert another lens element -- an eyepiece -- so named because you put you eye up to
the eyepiece to see whatever the scope is seeing.
Eyepieces are the subject of endless discussion, debate, agreement, and disagreement
among amateur astronomers. You can purchase eyepieces for a few bucks each and you
can spend hundreds of dollars for one eyepiece.
Here are links about eyepieces. Read and read some more. I will not try to
explain eyepieces.
- Good tutorial on eyepieces.
- Another good tutorial.
- Discussion for beginners.
Good discussion, no pictures.
- Dealers and manufacturers. Go to these sites and explore the site for eyepieces
and eyepiece information.
- TeleVue eyepieces. Most
expensive, generally considered the best.
- University Optics. Check out their
orthoscopic eyepieces.
- Meade Corporation. Click on Product
Guide, scroll down to Accessories for their eyepieces.
- Orion. Click on Accessories then click on
Eyepieces.
- Celestron.
- Finally, read about the Barlow lens -- it's a must-have accessory. This article is
on the Orion
Telescope's site -- you will find Barlows made by many manufacturers.
My eyepieces
Here is a photo of the inside of my eyepiece case -- these are my eyepieces -- and I
really don't need all of these.

In this case, you see:
- Eleven eyepieces (about seven too many)
- Three Barlows
- A lot of filters
- A compass
- A red LED flashlight
Here is a chart showing the eyepieces I own and the magnification that each eyepiece
provides with my XT-8 scope.
| Eyepiece |
Magnification with the XT-8 (1200mm
focal length) |
Remarks |
| Eyepiece alone |
Eyepiece with 2X Barlow |
| TeleVue Panoptics 32mm |
38X |
76X |
Nice, wide views |
| Meade SuperWide 18mm |
67X |
135X |
This is the eyepiece I start with, then switch to higher power. |
| TeleVue Nagler 7mm |
171X |
242X |
|
| TeleVue Nagler 5mm |
240X |
480X (not usable) |
Favorite scope for planets |
| University Optics orthoscopic 9mm |
133X |
266X |
|
| University Optics orthoscopic 5mm |
240X |
480X (not usable) |
|
| University Optics orthoscopic 4mm |
300X |
600X (not usable) |
Favorite scope for planets |
| Orion Epic ED 14mm |
86X |
172X |
|
| Orion Epic ED 9.5mm |
126X |
252X |
|
| Orion 20mm, 2-inch |
60X |
120X |
Very wide views of the sky |
| TeleVue 2X Barlow |
n/a |
n/a |
|
| TeleVue 3X Barlow |
n/a |
n/a |
|
| Orion 2X Barlow, 2-inch |
n/a |
n/a |
|
| Meade 20mm reticle eyepiece |
Special use eyepiece -- has illuminated
crosshairs in it, used for calibrating scope. |
| Magnifications in this color are not usable -- too much
magnification for the scope. |
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| Eyepieces in this color are my
favorites. |
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