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Takahashi TPL Eyepieces
Takahashi TPL Eyepieces
Takahashi TPL Eyepieces

Takahashi TPL Eyepieces

(Inc. 20% VAT)
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Eyepiece Focal Length
Product Code
Eyepiece Type
Plossl Eyepiece
Field of View
48 degrees
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Takahashi TPL Eyepieces

In designing a new standard-type eyepiece, we have repeatedly performed afocal calculations by attaching various types of eyepieces to Takahashi's non-aberration optics such as TOA and Mewlon CRS, and have come to the conclusion that Takahashi's original Plossl type eyepieces are the best.

Plossl is often underestimated because there are many inexpensive products on the market, but the TPL series to be released this time uses highly refractive low-dispersion glass and has an optical design that allows the image quality of an aberration-free objective lens to enter the retina as it is, with chromatic aberration at the centre about half that of the Abbe series and about two-thirds that of the LE series. The optical design allows the image quality of the aberration-free objective lens to enter the retina as it is. In this type of eyepiece without a Smythe lens, the Petzval sum cannot be corrected to zero, so the star image cannot be perfectly point-blank to the corners of the viewing ring,
but astigmatism and image curvature are controlled so that the deformation of the star image at the periphery is minimized.

The image quality is extremely sharp from the centre of the field of view to the half of the field of view, and although the star image bulges out toward the periphery, it is of high quality for visual observation, allowing the observer to focus on the centre of the field of view.

Since the star image at the periphery is designed to bulge out naturally, it works well with a good quality short Barlow.

The entire lens surface is coated with a multilayer coating that transmits more than 99% across the entire visible light range, and a high-quality matte finish

The metal hardware design, which prevents stray light from entering the lens, and other features enable stargazing with excellent contrast.

The eye relief is approximately 70% of the focal length, and the apparent field of view is 48°, the maximum field of view into which the viewing ring of TPL-33, which provides the lowest magnification at φ31.7 sleeve, can be inserted.

All of the TPL series eyepieces have the same focal length as the existing Takahashi 31.7 eyepiece series, and all of them use rubber eyecups that can be folded back when using eyeglasses.

The TPL series eyepieces are fully made in Japan and are suitable for use with Takahashi's high performance objective lenses.

The Takahashi TPL series will be available in three 31.7 sleeve types: TPL-12.5, TPL-18, and TPL-25.


Specifications: Takahashi TPL Eyepieces

What's in the Box

What's in the Box: Takahashi TPL Eyepieces

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