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The Alstar 1.25 inch Telescope Zoom Eyepiece is a remarkable tool for astronomy enthusiasts, offering seamless magnification control that allows users to adjust the focal length from 7mm to 21mm with a simple twist of the zoom housing. This feature makes it ideal for observing planetary clusters, lunar details, and deep-sky nebulae, providing a versatile solution for all types of celestial viewing.
One of the standout features of this zoom eyepiece is its extended eye relief, which ranges from 16mm to 33mm. This adjustable eye relief is particularly beneficial for eyeglass wearers, ensuring a comfortable viewing experience without any vignetting. The foldable soft-rubber eyecup adds to the comfort, allowing users to enjoy long observation sessions without discomfort.
The versatile design of the Alstar eyepiece caters to a wide range of observers, featuring an apparent field of view that expands from 30 degrees to 43 degrees. This adaptability makes it suitable for both planetary and deep-sky targets, while the precision stepless zoom mechanism outperforms traditional fixed focal length eyepieces, providing a more dynamic viewing experience.
Equipped with premium multi-coated optics, the Alstar eyepiece boasts a 7-element, 4-group high-index optical system. The multi-layer anti-reflection coatings ensure that users enjoy sharp, high-contrast celestial views. Additionally, the blackened lens edges and precision anti-reflective threading work together to eliminate stray light interference, making it an excellent choice for astrophotography.
With a 1.25 inch barrel, this zoom eyepiece is compatible with various filters, enhancing its functionality. The rubber traction ring ensures a secure grip, making it easy to handle even in challenging conditions. Whether you're observing the Pleiades star cluster or the intricate details of lunar craters, the Alstar 1.25 inch Telescope Zoom Eyepiece is designed to elevate your stargazing experience.
