OPT 4mm Plossl Eyepiece - 1.25"

OPT 4mm Plossl Eyepiece - 1.25"
Item # OS-P4
1 Questions(s)

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  • The OPT 4mm Plossl Eyepiece is a great value for the amateur astronomer!
  • Fully multicoated and includes a rubber eyeguard.
  • The OPT 4mm Plossl Eyepiece has a 45 Apparent Field of View and 6mm of Eye Relief.
  • This is a 1.25" Barrel Size.


OPT 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 OPT Plossl provides excellent image quality, good eye relief and an apparent field of view of about 45 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 OPT 4mm Plossl Eyepiece produces very high magnification and will work best on long focal length refractors and standard Schmidt-Cassegrains. Unless you have very steady seeing, this range more than likely will produce too much magnification on other telescope styles.

OPT Product Number: OS-P4
Additional Information

Additional Information

Manufacturer OPT
Optical Design Plossl
Barrel Size 1.25"
Warranty 90 Day - Covered by OPT
Eyepiece Field of View - Apparent 52ยบ
Eyepiece Focal Length 4mm
Eyepiece Eye Relief 6mm
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

  • OPT - 4mm Plossl 1.25" Eyepiece
  • Dust Cap
Questions & Answers

Product Questions

What power do i need to see the moon real close like the creators and maybe beyond the moon some what. i can,t buy anything expensive...I have a Zhumell 10 inch.I have some eyepeices but not the right ones....Thanks much..
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