|
|
| Telescope
Eyepieces, Barlows |
Eyepiece
Adapters |
|
Virtually all telescopes use one of two different sizes of draw tubes -
.965" diameters - generally found on smaller, less-expensive
telescopes. 1.25" diameter - generally found on more powerful and expensive
telescopes. You can easily check to see which you have by measuring the diameter of
the eyepiece or the tube it fits into. The two adapters listed below let you use
accessories with either size.
|
Eyepiece Adapter .965 to 1.25
Hybrid diagonal mirror has .965" telescope input end and 1.25" outlet end so
that 1.25" eyepieces can be used.
No. UT930-A1. Only $17.95 |
Eyepiece Adapter .1.25 to .965
Converts 1.25" draw tubes to permit use with .965 eyepieces and accessories
No. UT930-A2. Only $8.95 |
 |
Diagonal
Redirect
Fits in the eyepiece tube,
redirects image for viewing comfort For .965" draw tubes.
No. UT930-S1. Only $29.95 |
 |
Moon Filter
Fits all metal eyepieces Removes glare and increases contrast.
No. UT930-S2. Only $8.95 |
 |
 |
|
20mm Huygens Eyepiece |
4mm Ramsden Eyepiece |
| NOTE: to determine the magnification each
eyepiece will produce, divide the
focal length of the the telescope (check catalog description) by the focal length of the
eyepiece.
For example, if your telescope has a focal length of 500mm and if you use it with
a 4mm focal length, the magnification will be 500 divided by 4, or 125,
which means 125 power magnification. |
|
Eyepieces for Telescopes with
.965" Draw Tubes |
| 4mm Ramsden |
|
No. UT930-E1. Only $24.95 |
| 12.5mm Huygens |
|
No. UT930-E2. Only $24.95 |
| 20mm Huygens |
|
No. UT930-E3. Only $27.95 |
| 25mm Huygens |
|
No. UT930-E4. Only $49.95 |
| 25mm Kellner |
|
No. UT930-E5. Only $64.95 |
|
|
Eyepieces for Telescopes with
1.25" Draw Tubes |
| 6.3mm Kellner |
|
No. UT930-F1. Only $49.95 |
| 12.5mm Kellner |
|
No. UT930-F2. Only $49.95 |
| 25mm Kellner |
|
No. UT930-F3. Only $39.95 |
| 7.5mm Plossel |
|
No. UT930-F4. Only $69.95 |
| 17.5mm Plossel |
|
No. UT930-F5. Only $69.95 |
| 25mm Plossel |
|
No. UT930-F6. Only $69.95 |
|
|
