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.
OPT 4mm Plossl Eyepiece - 1.25"
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
SKU OS-P4 Manufacturer OPT Optical Design Plossl Barrel Size 1.25" Warranty 90 Day - Covered by OPT Eyepiece Field of View - Apparent 52º 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
- OPT - 4mm Plossl 1.25" Eyepiece
- Dust Cap
- Questions & Answers
Product QuestionsWhat 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..Question by: loneman44 on Oct 13, 2014 1:20:02 PMYou really only need a magnifications of around 100-200x to get excellent detail on the moons craters. Slightly higher powers of ~150-225x are better for planetary observing. Because most deep sky objects are relatively faint and larger in extent than planets, though, you typically use lower magnifications to preserve the object surface brightness. 50-100x is typical for large faint nebulae and open clusters, and 100-150x is typically used for smaller bright nebulae, galaxies and globular clusters.Answer by: Chris (Admin) on Oct 14, 2014 10:31:52 AM
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