- Description
Designed and manufactured in Canada
The Speer-WALER series 4 eyepiece is an exciting new eyepiece from Antares. WALER stands for Wide Angle Long Eye Relief. This 9.1mm focal length eyepiece, with a 86 degree apparent field of view, offers 10mm of eye relief. Sold with a eye-shield, rubber grip, and is fully multi coated.
With the optional camera adapter you can connect a DSLR, mirror-less with the correct lens adapter, or even a dedicated camera. The dedicated adapter provides a standard M42 T Thread.
Focal length 9.1mm
Eye relief 10mm
Elements: (8).
1.25" barrel
86 Degree APOV
The Series4 9mm performance: Edge field curvature (546nM), Sagittal,-0.10mm, Tangential: 0.19mm. Edge lateral color: 0.007mm. Chromatic focal shift (420-656nM) 0.09mm.
You may also like
Recently viewed
Recent Blog Posts
View all
Your Guide Graph Is Lying to You
You drove ninety minutes to dark sky, PHD2 held 0.4 arcseconds all night, and half your subs still have eggs for stars. Here are the three things your
Read More
Read More
D-Size vs V-Size: A Complete Guide to Telescope Dovetail Systems
What's the difference between D-size and V-size telescope dovetails? Here's everything you need to know.
Read More
Read More
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained
Back focus is one of those astrophotography terms that c
Read More
Read More