Meade super wide 18mm $115 CONUS. Excellent condition
The Meade Series 4000 Super Wide Angles are six-lens eyepieces, each with a wide 67 degree apparent field of view. They are 7-layer multicoated and computer-optimized for excellent correction of chromatic and spherical aberration and astigmatism, and have blackened lens edges for high contrast. They work well for low to medium power observing of star fields, nebulas, and other deep space objects with all telescope types and at all focal ratios down to f/4. They have soft fold-down rubber eyecups to shield the eye from ambient light, and are threaded for standard color and nebula filters.
They have very good color correction, with virtually no field curvature, astigmatism, or ghosting.
All come in plastic screw-top storage containers with hexagonal bases that will not roll if laid on a slanting surface. A good choice for large scale objects – open star clusters, the larger nebulas, etc.