Ethos 13mm 100° Ultra-Wide Angle Eyepiece for Telescopes - Perfect for Astronomy, Stargazing & Deep Space Observation
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Description
Description
Introduced at the 2007 Northeast Astronomy Forum (NEAF), Tele Vue once again broadened the amateur astronomer's perspective on the universe with: 100° of pure TeleVue quality. The field area of this eyepiece is more than 50% larger than the 82° field of the Nagler eyepiece design. The Tele Vue Ethos is essentially multiple eyepieces, delivering the true field size of a longer focal length, narrower apparent field eyepiece with the benefits of higher power and darker sky background.
The 13mm Ethos is a member of the logical set of 21mm/13mm/8mm. Each step within this set approaches a 3x field area gain, with the 13mm being the eyepiece that will likely spend the most time in your telescope.
Specifications
| 13-mm | |
| Model # | ETH-13.0 |
| Focal Length (mm) | 13 |
| Barrel Size (in.) | 2" & 1¼" |
| Apparent Field of View (deg.) | 100 |
| Eye Relief (mm) | 15 |
| Weight (lb / oz) | 1.30 / 20.8 |
| Field Stop (mm) | 22.3 |
