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
Astromania 1.27inch Mars Filter is an excellent multi-purpose filter for viewing all features of Mars; polar caps stand out prominently; landscape features like mare and highland mountain ranges are easily separated and resolved; polar hazes and cloud cover become visible
Fully-coated Mars filter: An invaluable tool for any planetary viewer with an interest in the red planet; increases contrast to bring out subtle details on the disc of the red planet