TPO 40mm Plossl Eyepiece - 1.25"

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TPO 40mm Plossl Eyepiece - 1.25"
Item # OS-P40
1 Questions(s)

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  • The Third Planet Optics 40mm Plossl Eyepiece is a great value for the amateur astronomer!
  • Fully multicoated and includes a rubber eyeguard.
  • The TPO 40mm Plossl Eyepiece has a 46 degree Apparent Field of View and 31mm of Eye Relief.
  • This is a 1.25" Barrel Size.


Third Planet Optics 4mm Plossl Eyepiece - 1.25"

The four element Plossl design is perhaps the most popular telescope eyepiece design on today's market and an all-around performer. The TPO Plossl provides excellent image quality, good eye relief and an apparent field of view of about 46 degrees. This well manufactured Plossl will deliver high contrast and pinpoint sharpness out to the edge of the field of view.

These Plossl eyepieces are a great value for the amateur astronomer. We get them directly from the manufacturer to save you money. Each 4-element eyepiece is fully multi-coated for maximum contrast and has blackened lens edges to minimize internal reflections and the barrels are threaded to accept 1.25" filters.

The TPO 4mm Plossl Eyepiece is a great extended field eyepiece for longer focal length – good for large nebula and open clusters. For shorter focal length, they are fantastic for large objects such as the Orion nebula, views of the full lunar disc, large open clusters and more. This multi-purpose magnification range also makes for good "locator" eyepieces in all focal lengths. They are also well suited to shorter focal length telescopes for extended views and large, starry fields.

TPO Product Number: OS-P4
Additional Information

Additional Information

Manufacturer TPO
Optical Design Plossl
Barrel Size 1.25"
Warranty 90 Day - Covered by OPT
Eyepiece Field of View - Apparent 46º
Eyepiece Focal Length 40mm
Eyepiece Eye Relief 31mm
Eyepiece Manufacturer Series OPT Plossl
Eyepiece Weight Not supplied by manufacturer
Field Stop Not supplied by manufacturer
Number of Lens Elements & Groups 4 elements
Special Feature None
Comes with Dust Caps? Yes
Comes with Eye Guard? Yes
Included Items

Included Items

  • TPO 40mm Plossl 1.25" Eyepiece
Questions & Answers

Product Questions

Looking for an EP for looking at Galaxies with a 10" reflector. I believe this EP will work good. Was wondering if this product is Used or New and if New is it "flawed". Looks like a nice piece though.
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