Sky's the Limit - the original importer of these superb eyepieces.
- 2 separate ED glass elements
- 60 degree field of view
- 16mm eye relief
- each air to glass surface fully multicoated - high contrast
- large 21mm eye lens
- sharp edge to edge performance
- blackened lens edges to minimise internal reflections
- capture ring nosepiece
- threaded for standard 1.25" filters
- wind up eyecups for comfortable viewing
- rubber clad body
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Genuine UK Stock
These eyepieces use two separate ED (Extra-low Dispersion) glass elements of different glass types in the optical system to provide exceptional colour fidelity (with astonishingly low levels of chromatic aberration) so that the true colour differences between binary star pairs and planetary surface details are easily visible. They have a 60° field of view which is very flat and it is particularly recommended with telescopes with a f/5, or greater, focal ratio. The image is uniformly sharp edge-to-edge, with markedly low astigmatism. Barrel distortion is essentially non-existent, eliminating the annoying "goldfish bowl" effect of distortion of the image which is often seen in some eyepieces when panning across a star field.
Each air-to-glass surface in the Starguider eyepiece is fully multicoated for high light transmission and exceptional contrast. This high contrast makes it a good choice for splitting close binary stars, for examining low contrast lunar and planetary detail, and for finding small and faint planetary nebulae against a truly dark sky background. The lens edges are blackened to eliminate internal reflections and further improve contrast. As you would expect, the chrome barrel is threaded for standard 1.25" filters and has a capture ring to help reduce the chances of accidently dropping the eyepiece out of the focuser.
Starguider ED eyepieces are parfocal, minimizing the amount of refocusing needed when changing eyepieces within the series.The eyepiece is set in a heavy rubber cladding which is grooved for easy grip. They have a soft rubber twist up eyecup which will make it unbelievably convenient to those of us who wear spectacles.
The colour coded body rings and clear lettering print will help you find the right one in the dark. The eye lens is large in diameter (see photo) and with 16mm eye relief this makes it very comfortable and easy to look through.