1.25" 5mm 60 Degree Explorer Dual ED Eyepiece

1.25" 5mm 60 Degree Explorer Dual ED Eyepiece (image 1/1)
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1.25" 5mm 60 Degree Explorer Dual ED Eyepiece Sky's the Limit are delighted to offer for sale this 1.25" 5mm 60 degree ED eyepiece. These eyepieces are absolutely brilliant - just Google "Paradigm Eyepieces" and read the reviews as they are the same eyepiece but branded "BST Explorer" for Trademark reasons . The eyepiece uses two separate ED (Extra-low Dispersion) glass elements of different glass types in its 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. It has a 60° field of view which is very flat and it is particularly recommended with telescopes with a f/5, or greater, focal ratio. It 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 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 read more
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