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Celestron put together this Observers Accessory Kit to give users the essentials for observation and astro-imaging. This kit includes two Plossl eyepieces that yield high and low magnifications on any given telescope, two planetary color filters, and a neutral density Moon filter. This kit also includes a multi-function accessory that combines a 2x Barlow lens with a T-adapter which will not only double the magnification of any eyepiece used in it, but also allows a camera-specific T-ring to easily thread onto it to for astrophotography with a DSLR. An included plastic carrying case holds all of the kit's optical accessories with room for more.
1.25" barrel diameter
Four-element lens design
52° apparent angle of view
Anti-reflection fully multi-coated optics improve light transmission, color rendition, and contrast
17mm focal length produces a medium magnification view in most telescopes
6mm focal length produces high magnifications - ideal for the Moon and planets
Enhances the contrast of the cloud belts on Jupiter and the polar ice caps on Saturn
Increases contrast on the Moon
#25 Deep Red:
Helps to define the polar ice caps on Mars
Useful when observing Jupiter
Helps block out a portion of the Moon's light to increase contrast, allowing users to see details better
Use when observing Venus to reduce glare so that the planet's phases can more easily be seen
2x Barlow: Doubles the magnification of any 1.25" eyepiece
T-threads allow a camera to be mounted when used with an optional T-ring