Omegon Premium Flatfield 5,5 mm Oculair 60° (1,25 inch): vlak beeldveld met ED-optiek
Het Omegon Premium Flatfield 5,5 mm doet wat de naam belooft: een vlak beeldveld waarin sterren ook aan de rand puntvormig blijven. Het kortste brandpunt van de serie, voor planeetdetail met een strakke rand.
The series corrects the field curvature that makes most eyepieces blurry at the edge, and the ED lens element keeps the color reproduction pure. Even on fast Newtons around f/5, the edge remains sharp.
Flat field, high contrast
The optical construction with an ED element and multi-layer coating on all air-to-glass transitions delivers a sharp image with high contrast. Objects that drift to the edge retain their shape and sharpness.
Pleasant insight, parfocal series
With an interpupillary distance of 16 mm, you can observe relaxedly, without black shadows if your eye is slightly off-axis. The series is parfocal: changing the focal length requires hardly any refocusing.
The 1.25-inch barrel has filter threads for moon and color filters.
Wat zie je met 5,5 mm?
Op een 150/750 Newton geeft 5,5 mm een vergroting van 136x, op een telescoop met 1200 mm brandpuntsafstand 218x. Houd maximaal 2x de opening in millimeters aan.
Maankraters, de ringen van Saturnus en dubbelsterren blijven scherp, ook als ze richting de rand driften.
Featured accessories
The Premium Flatfield series ranges from 5.5 to 25mm and is parfocal: two or three focal lengths form a complete set. An Omegon moon filter (1.25 inch) dims the bright moon image at longer focal lengths.
For whom yes and for whom no
- ✓ Observers with fast telescopes (f/5) who value edge sharpness
- ✓ To see stars as pinpoints to the edge instead of smeared
- ✓ Owners of multiple focal planes in the series: parfocal switching
- For those seeking the widest field of view: the SWA and Redline series offer 70 degrees
- ✗ Smart telescopes without interchangeable eyepieces
Specifications
| Focal length | 5,5 mm |
| Apparent field of view | 60 degrees |
| Eye relief | 16 mm |
| Optical design | Flat field with ED lens element, multi-layer coated |
| Mount | 1.25 inch (31.7 mm), with filter thread |
| Special feature | parfocal within the series, flat field of view up to f/5 |
| Series | Omegon Premium Flatfield |
You can find more accessories for this merk at the Omegon merk Page.
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