Corrected Field Curvature: Premium flat field eyepieces offer corrected field curvature; this correction lets you use the entire field of view; you will observe an image with superior sharpness - not just in the centre; but right out to the outer edge
Multi-coating and Crystal-clear Images: The crystal-clear images you then see when looking through the eyepiece; the high quality of the 5-6 lens elements and the high light transmission give you an image of high colour purity and excellent contrast
Twist-up Eyecups: The eyepieces have solid and infinitely adjustable eyecups; making it easy to choose your most comfortable viewing distance ideal for long intensive observing sessions; the various models have focal lengths of 8 mm 19 mm and 27 mm
ADC unit is special corrector designed for planetary observers and photographers; observe planets not only high in sky but even rise and set; with high brilliance and colour and without chromatic aberration; make more flexible in choice of observing time
Ultra-low profile - also suitable for visual observing and bino-viewers; ring scale for adjusting dispersion correction; corrects atmospheric dispersion - less colour fringing; sharper planetary photos and more detail