Lunt Solar Zoom Eyepiece

While it is optimized for H-alpha solar viewing, this is a fully multi-coated eyepiece that performs very well for general night-sky and terrestrial observation. You can use it as a versatile, all-purpose zoom eyepiece in any standard telescope.

Yes, this eyepiece features a standard 1.25-inch barrel size, making it compatible with the vast majority of modern telescopes. It also includes a safety undercut on the barrel to help prevent it from slipping out if the thumbscrew loosens.

The apparent field of view varies between 40 and 53 degrees as you adjust the focal length from 21.5mm down to 7.2mm. Generally, you will experience a wider field at the lower magnification settings and a narrower, more detailed field as you zoom in.

15mm of eye relief is generally considered comfortable for most observers, though your experience may vary depending on the thickness of your glasses frames. If you prefer to observe with your glasses on, you may need to position your eye carefully to see the full field of view.

The ribbed grip is highly functional, especially for solar observers who often work in varied conditions. It provides enough tactile feedback to make smooth, precise adjustments to your magnification even while wearing gloves.