Enjoy a wide-field window into the heavens, served up by Stratus eyepieces. With an apparent field of 68°, which translates to a 71% greater viewing area than that of a typical Plossl, Stratus eyepieces quite literally put more stars in your eyes. In the same way you feel more a part of the action watching a big-screen TV, with Stratus you will feel like you are really experiencing your celestial targets, rather than just viewing them from afar.
Orion 3.5mm Stratus Wide-Field Eyepiece
Each ocular features a monster 1-1/4"-diameter eye lens to look into. Each also has a generous 20mm of eye relief, so you'll get the "big picture" even if you wear eyeglasses. The optics are fully multi-coated to maximize light transmission to your eyes, and the lens edges are blackened to ensure excellent contrast.
Stratus eyepieces fit in both 1.25" and 2" focusers. Each is threaded for filters and comes with protective lens caps.
Orion 3.5mm Stratus Wide-Field Eyepiece Features...
- This 3.5mm Stratus eyepiece from Orion sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief
- Boasts a 68 degree apparent field of view for a wide-field window into the heavens
- Eyepiece optics are fully multi-coated to maximize light transmission
- Lens edges are blackened to ensure excellent contrast
- Can be used in either a 2" or 1.25" telescope focuser or diagonal
- Additional Information
SKU OR-8241 Manufacturer Orion Optical Design Wide Angle Barrel Size 1.25" Warranty 1 Year Warranty Eyepiece Field of View - Apparent 68º Eyepiece Focal Length 3.5mm Eyepiece Eye Relief 20mm Eyepiece Manufacturer Series Orion Stratus Eyepiece Weight 15 oz. Field Stop 5.1mm Number of Lens Elements & Groups 8 elements Special Feature None Comes with Dust Caps? Yes Comes with Eye Guard? Yes
- Included Items
- Orion 3.5mm Stratus Wide-Field Eyepiece
- Dust Caps
- Questions & Answers
Product QuestionsIM LOOKING FOR A 2" LO MM EYEPIECE.
I LIKE THE VIEW OF THE 2" BUT THIS BEING A 1.25 AND A 2"
I DON'T FEEL I WILL GET A TRUE 2" VIUE..
AM I RIGHT?
IT MAKES SENSE TO ME...
TELL ME THE TRUTH.Question by: WILLIAM RUSSO on Jun 21, 2015 12:34:00 PMThe Orion Stratus 3.5mm eyepiece has an apparent field of 71 degrees. The true field of view through your telescope depends on the magnification. To calculate true field you divide the apparent file by the magnification. For example if you have a telescope with a focal length of 500mm, the 3.5mm will give you a magnification of 143x so, 71/143 = .49. Your true field of view is just under 1/2 degree.Answer by: Todd R (Admin) on Jun 23, 2015 4:05:00 PM
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