***Read the review of the Stellarvue Optimus eyepieces by Tony Hallas in the May 2017 issue of Astronomy***
Introducing the Stellarvue Optimus eyepiece series. This 9 mm eyepiece is ideal for moderate power work on moons, planets and dark sky objects.
A 100 degree field of view provides the user with almost 1.5 times the area of an 82 degree eyepiece. When using hand driven alt-azimuth mounts this generous field will be appreciated. The eyepiece offers a generous 15 mm of eye relief and has a standard foldable rubber eye cup. Each of the eight elements are fully multi-coated, edge blackened and the lens barrel and baffles are similarly dark black. All of these factors add up to create an extremely contrasty eyepiece that is free of unwanted reflections, flaring or ghosting.
We recommend this as the ideal deep sky eyepiece for viewing nebulae, clusters and galaxies.
Our EOP eyepieces are now loaded into AstronomyTools database and application. Click here to simulate the field of view https://astronomy.tools/
9 mm Stellarvue Optimus Specifications
Focal Length Weight Length* Max. Dia. Lenses** FOV*** Eye Relief Barrel(s) Field Stop Dia.
9 mm 19.5 Oz 5 3/4" 2 1/4" 9/6 100 13 mm 1 1/4" & 2" 15.7 mm
*Measured with eye cup rolled down. Add 1/8" if rolled up.
**Number of elements/number of groups
***Apparent Field of View measured in degrees SKU:EOP-09.0Width:8.00 (in)Height:6.00 (in)Depth:6.00 (in)Shipping:Calculated at CheckoutSKU:EOP-09.0Barrel Size:1.25" & 2"Coating:Fully multi-coatedEyepiece Field of View - Apparent:100ºEyepiece Focal Length:9 mmEyepiece Eye Relief:15 mmEyepiece Series:Stellarvue OptimusWeight:17.5 oz., 2" adapter adds 2.5oz.Length:6" long, 2" adapter adds 3/16"Diameter:2-1/2" maximum diameterNumber of Lens Elements & Groups:9 elements, 6 groupsSpecial Features:Weatherized. Outer lenses sealed.Comes with Dust Caps?:YesFilter Thread?:Yes, for standard 1.25" and 2" eyepiece filters.Comes with Eye Guard?:Yes, foldable rubber eye guard.
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