Tele Vue Nagler Type 7 9 mm – 82° Eyepiece

Tele Vue Nagler Type 7 9 mm: Key Features

The Tele Vue Nagler Type 7 9 mm is a 9-mm astronomical eyepiece offering an apparent field of 82°. It has a 2-inch and 1.25-inch thread and a 19-mm eye relief. This configuration is worth considering for star clusters, compact deep-sky objects, and general-purpose observing, depending on your telescope’s focal length.

What is this model best suited for?

Nagler eyepieces offer an apparent field of view of 82°. The different types represent distinct design choices: compare the focal length, eye relief, thread type, and weight—not just the product family name.

• Designed based on the performance objectives of the Apollo 11 mission; 82° field of view and 19 mm eye relief for eyeglass wearers.
• Adjustable and lockable barrier; parfocality across the four focal lengths when used with the ASF-8125 HiHat adapter for 1.25-inch and 2-inch modes.

Technical specifications

Frequently asked questions

What is the magnification with this eyepiece?
With a telescope that has a focal length of 1,000 mm, this eyepiece provides approximately 111× magnification. The magnification is calculated by dividing the telescope’s focal length by that of the eyepiece.

Is it compatible with my telescope?
The double slide allows for both of the specified formats. Check the clamping position, the focusing travel, and the clearances with your angle drive or focus adjuster.

Can you observe things with glasses?
The specified eye relief is 19 mm. Comfort when wearing glasses also depends on their shape and how the eye is positioned; trying them on is always better than relying on a one-size-fits-all guarantee. The Tele Vue chart indicates DIOPTRX compatibility; this astigmatism corrector is optional.

Is the apparent field the field visible in the sky?
No. The apparent field of view of 82° describes the view through the eyepiece. The actual field of view depends on the telescope; the 13-mm field stop is the value to use to calculate it.

Before Ordering

Check the focus travel, the focus adjustment range, the weight your setup can support, and the compatibility of filters or correctors. The product offered is a Tele Vue Nagler Type 7 9 mm eyepiece; the accessories listed are optional. The availability shown reflects our supplier’s status at the time of the last check and does not indicate a reserved quantity.

Features and Compatibility: Tele Vue EN7-09.0 Official Data Sheet.