Tele Vue 15mm Early Wide Field "Smoothie" Japan (Circle NJ)
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The Tele Vue 15mm Early Wide Field "Smoothie" eyepiece from Japan is a classic piece of astronomy equipment known for its distinctive features and optical performance. Here’s an overview:
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Focal Length: The eyepiece has a focal length of 15mm. This determines the magnification when used with a telescope.
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Apparent Field of View: The "Smoothie" eyepieces are renowned for their wide apparent field of view, typically around 65 degrees. This wide field provides expansive views of celestial objects.
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Eye Relief: These eyepieces are designed with comfortable eye relief, which is beneficial for observers who wear glasses while observing.
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Optical Design: The "Smoothie" series from Tele Vue is known for its high-quality optics, providing sharp and well-corrected views across the field of view. The design minimizes aberrations and distortions, enhancing the observing experience.
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Build Quality: Tele Vue eyepieces are crafted with precision and are known for their robust build quality. The "Smoothie" series, despite being older models, is still highly regarded among amateur astronomers for its durability and performance.
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Usage: The 15mm focal length is versatile for observing a wide range of celestial objects, including star clusters, nebulae, galaxies, and larger deep-sky objects. It can also be useful for observing details on planets when paired with a telescope of appropriate aperture.
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Compatibility: Ensure compatibility with your telescope’s focuser diameter (usually 1.25 inches or 2 inches) before purchasing. Tele Vue eyepieces are available in both 1.25-inch and 2-inch formats.