These four element oculars feature the classic symmetrical doublet design which is very famous for field correction (Image view is very sharp from the centre to the edge). Multi-coated and black coloured edges of lenses deliver a crisp, high contrast image (specially priced for Planetary viewing). It’s field of view is 52° panorama for F/ratios as low as F/4.5. (44° for the 40mm Supper Plossl). These eyepieces are excellent performers with telescopes of all types. It also has a thread for photo-visual filters. |
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| Orion Sirius Plossl eyepieces are ideal for any type of telescope, refractor, reflector, or catadioptic. They offer a 52º field with clean, high-contrast images. All air-to-glass surfaces are fully coated for improved light transmission. |
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