William Optics William-Optics 40mm Ocular SWAN 2 Wide Angle Eyepiece WE-SWAN-40mm on sale and available from our online store. OpticsPlanet, Inc is an Authorized US Distributor for William Optics Telescope Accessories.

Field of View: 72. Eye Relief: 28mm

Specifications of William Optics William-Optics 40mm Ocular SWAN 2 Wide Angle Eyepiece WE-SWAN-40mm:

Internally baffled, All lenses' edges and internal spacers blackened, Fully multicoated Model SWAN 40 Focal Length 40mm Lens Structure (#Elements/#Groups) 5/3 Field of View 72 Eye Relief 28mm Barrel 2" Coating FMC Parfocal Yes Weight 570g

· Inner Structure

Features of William Optics William-Optics 40mm Ocular SWAN 2 Wide Angle Eyepiece WE-SWAN-40mm:
SWAN: a huge-lens rich-field eyepiece at a very reasonable price!
Fully multicoated advanced design for breathtaking 72 deg. F.O.V. jaw-dropping views.
Try it out on the Milky Way!

A True Spacewalker!
• Marvelous super-wide field of view: 72 deg. F.O.V.
• Fully Multicoated lenses for excellent transmittance.
• Outstanding chromatic aberration correction.
• Sharp and well contrasted.

Great Contrast
• Internally fully blackened (lens edges and internal spacers).
• No flaring or ghosting on high-contrast objects.
• Parfocal.

Ease of Use
• Soft rubber eyecup.
• Extremely long eye-relief: 28 mm.
• No internal reflections.

Terrific Fit and Finish
• High-resistance anodized black barrel.
• Smooth design for no hook up in your focuser.

Package Contents:

• William-Optics 40mm Ocular SWAN 2 Wide Angle Eyepiece

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William Optics William-Optics 40mm Ocular SWAN 2 Wide Angle Eyepiece WE-SWAN-40mm Rating & Reviews