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Televue 4.7mm Ethos SX Eyepiece - 1.25"/2天文望远镜进口
- 市 场 价：-
- 售 价：5000.00
- 品 牌：TELEVUE
- 商品编号：7140236
- 商品货号：7140236
- 浏览次数：9811 次
- 重 量：无
- 已经出售：0
Televue 4.7mm Ethos SX Eyepiece - 1.25"/2"
- This TeleVue Ethos SX Eyepiece is offered in a 1.25"/2" barrel format with a 4.7mm focal length.
- Designed and crafted to combine its exceedingly wide field of view - the same as the LEM Simulator optics.
- This TeleVue Ethos SX Eyepiece offers high contrast, color-rendition, distortion correction and center-to-edge sharpness needed to achieve that natural view.
- Small exit pupil yields a darker background to enhance contrast.
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TeleVue 4.7mm Ethos SX Eyepiece - 1.25"/2"
Al Nagler eagerly pushed Ethos designer Paul Dellechiaie to extend the new 3.7mm focal length to reach 110°, the same field size as the LEM Simulator optics Al designed 45-years ago to train NASA astronauts for lunar landings.
The new 4.7mm Ethos-SX, like its 3.7mm progenitor, is designed and crafted to combine its exceedingly wide field of view with all the contrast, color-rendition, distortion correction and center-to-edge sharpness needed to achieve that natural view.
Compared to a lower power eyepiece with the equivalent TFOV (similar field stop) such as an 11mm Plössl (9.1mm field stop), the greater power - for higher resolution, and smaller exit pupil (for a darker background to enhance contrast) reveals a deep sky experience "even better than you imagined".
TeleVue 4.7mm Ethos SX Eyepiece Features...
- The 4.7mm is a 1¼" format and is parfocal with the wide range of 1¼" Tele Vue eyepieces.
- 2" adapter included.
- Weight: 1.15 lbs / 1.3 lbs with 2" adapter/stand
- Eye relief: 15mm (accepts DIOPTRX eyesight astigmatism corrector)
- Effective field stop diameter: 8.94mm
- Focal length: 4.7mm
- Apparent field: 110°
TeleVue Product Number: ETH-04.7