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Pentax - XW-3.5 Eyepiece天文望远镜目镜
- 市 场 价:-
- 售 价:2400.00
- 品 牌:PENTAX
- 商品编号:8045332
- 商品货号:8045332-2
- 浏览次数:23791 次
- 重 量:无
- 已经出售:0
With unsurpassed optical clarity and the shortest focal length in the XW series, the XW 3.5 offers a 70 degree field of view for easier viewing. All of our eyepieces are constructed with a high-refraction, low-dispersion lanthanum glass that consistently delivers bright, high-resolution images with minimal distortion. In addition, all XW series eyepieces are built to JIS Class 4 weather-proof standards which increases their durability in less than ideal conditions. Designed for use with a wide range of telescopes and PENTAX brand spotting scopes, the XW series eyepieces are a clear choice for ground and astronomical applications.
Lens Structure: 8 elements, 5 groups
Focal Length: 3.5mm
Apparent Field of View: 70 degrees
Eye Relief: 20mm
Attachment Diameter: 1.25" (31.7mm)
Filter Diameter: 28.6mm
Field Stop Diameter: 4.3mm
Eyepiece Ring: Helicoid type
Height & Width: 5.4\" x 2.4\"
Weight: 14.3 oz. (405g)