Second hand Celestron 15mm eyepiece. The optics are clean. This is a good quality mid power plossl eyepiece from Celestron perfect for general observing.
The modified achromat series of eyepieces offer a good standard of performance in a very affordable package. Designed for telescopes with mid-range to long f/ratio, these oculars have features usually found only in more expensive designs.
The Plossl eyepiece is by far the most popular ocular in use today. With its 4-element symmetrical doublet design, it has low aberrations with almost every type of instrument.
These standard 1.25"/31.7mm eyepieces set high performance standards for modern telescope oculars. The proven 4-element Plossl designs display edge-to-edge pinpoint imaging across their panoramic 52º fields.
The world standard in telescope oculars, Meade Series 4000 eyepieces yield the widest possible fields of view, consistent with pinpoint edge-of-field sharpness and long eye relief—and yet with extremely low astigmatism, spherical aberration, and off-axis color.
Provides an upright, correctly orientated image for terrestrial observations. Suitable for use with Newtonian Reflector Telescopes or Refractor telescopes.
This handy new accessory will help you to check the quality of nearly any telescope you come across in the future! While it is true that optical aberrations can be determined by the star test, this method requires steady air and an experienced observer.
These Sky-Watcher Ultra-Wide Angle, Multi-Coated, Long Eye Relief eyepieces offer a generous 66º apparent field of view, allowing more sky objects to be viewed at one time. They provide sharp images right across the field.
This is a high-quality Antares 1.25 25mm Plossl eyepiece with focusable crosshairs (single), perfect for alignment and tracking. To obtain razor-sharp focusing of the crosshairs, merely turn the upper part of the eyepiece.
High quality 1.25" wide angle eyepieces. A superb upgrade from the standard eyepieces that come with most telescopes. Unlike the plossl eyepieces that are generally 52° field, these WA eyepieces give an impressive 68° field
If you are looking to move up to a higher quality eyepiece the Omni series provides more enhanced features in a wider selection of focal lengths. Celestron designed this series with the finer points in mind so you, the user, can benefit from the features that make this series unique.
This handy new accessory will help you to check the quality of nearly any telescope you come across in the future! While it is true that optical aberrations can be determined by the star test, this method requires steady air and an experienced observer.
This handy accessory fits directly in place of a single 1.25" eyepiece, then 4 of your favourite eyepieces or even a CCD or webcam can be selected quickly and smoothly by rotating the Q turret