Eyepiece TeleVue Nagler Type 4 17mm 82° 2″

TeleVue Nagler Type 4 17mm 82° 2″ eyepiece

There are eyepieces, and then there are Naglers. The Nagler series from the American company TeleVue has been a synonym for the absolute best in visual astronomy for decades. The TeleVue Nagler Type 4 17mm eyepiece with its impressive 82° apparent field of view belongs to that category of equipment that changes the way you experience the night sky - it literally pulls you into the universe. If you are looking for an eyepiece that meets the highest expectations of an experienced observer, you have come to the right place.

Optical design and image quality

The Nagler Type 4 17mm uses a 7-element optical system of the UWA (Ultra Wide Angle) class, which is the result of the precise optical design by Al Nagler. Multi-coating on all optical surfaces minimizes reflections and maximizes light transmission. This makes a real difference when observing faint deep sky objects - nebulae, galaxies or globular clusters. The image is sharp, high-contrast and true-to-color from the center of the field of view all the way to the edges. The 82° apparent field of view creates the feeling of a real "journey into space" - an experience that, once you have had it, you will not easily forget.

Comfort and usability

The 17mm eye relief is exceptionally comfortable for an eyepiece with such a wide field - eyeglass wearers can relax, as they can see the entire field of view without having to remove their glasses. The fold-down eyecup allows precise adjustment of the optimal eye distance and comfortable observing during longer sessions. The standard 2″ filter thread allows direct use of planetary, UHC or OIII filters - a practical advantage that you will appreciate especially when observing emission nebulae.

Please note that the weight of 726 g is understandable for an eyepiece of this caliber, but it should be taken into account when balancing your telescope.

Ideal telescope compatibility and use cases

The TeleVue Nagler eyepiece for deep sky observation is an ideal choice for advanced visual astronomers who want to get the most out of every observing session. It is suitable for refractors, Newtonians, Dobsonians and catadioptric telescopes with a 2″ focuser. Thanks to its 17mm focal length, it delivers a comfortable medium magnification that is ideal for wide-field views of large objects such as:

• Large nebulae - Orion Nebula, Cygnus Nebula
• Open star clusters
• Milky Way star fields
• Globular clusters
• Large galaxies

At the same time, it is versatile enough for general survey observing of the Milky Way.

About TeleVue and the Nagler legacy

TeleVue is considered one of the best eyepiece manufacturers in the world, and that is no coincidence. TeleVue Optics, founded by Al Nagler in 1977, has focused exclusively on premium astronomical optics with an emphasis on visual observing from the very beginning. Every eyepiece in the Nagler series goes through strict quality control and is designed to last decades of intensive use. TeleVue makes no compromises in optical design or manufacturing - the result is products that astronomers pass down from generation to generation. When you invest in a Nagler, you invest in a tool that will accompany you throughout your entire astronomical career.

Technical specifications