William Optics 1.25" UWAN Series Eyepiece - 4mm
Availability: Item has been discontinued by the manufacturer
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Beautiful Ultra Wide Angle (UWA) Eyepiece, for beautiful observation sessions with your telescope. This 7-element UWAN eyepiece is ideal for rich-field observations at medium-high power.Extremely good price for its quality: look around and compare! Ideal for fast focal ratio telescopes (Dobsonian, etc.)
Super Wide FOV
Outstanding ultra-wide field of view: 82 deg. F.O.V.
Fully MultiCoated lenses for excellent light transmittance.
Reduced chromatic aberration.
Improved contrast compared to similar EPs.
Great Contrast
Internally fully blackened (lenses edges and internal spacers)
No flaring or ghosting on high-contrast objects.
Parfocal
Light and Easy
Innovative twist-up rubber eyecup.
Long eye-relief: 12mm.
No internal reflections, kidney beaning or other distracting distortions.
Terrific Fit and Finish
High-resistance anodized black barrel.
Smooth design for no hook up in your focuser.
Threaded for use with 1.25" filters.
| Product Banner Type | discontinued |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Eyepiece Series | UWAN Series |
| Focal Length | 4mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 82° |
| Eye Relief (Designed) | 12mm |
| Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
| Coatings | Fully Multi-Coated |
| Lens Elements | 7 |
| Lens Groups | 4 |
| Blackened Lens Edges | Yes |
| Barrel Type | Tapered barrel |
| Protective Plastic Storage Container | Yes - Free Agena Eyepiece Container |
| Protective Plastic Storage Container Size | Agena 52x80mm |
| End Caps | 2 |
| Field Stop Diameter | 6mm |
| Parfocal | Yes |
| Rubber Eye Guard | Yes (Twist-Up Eyecup) |
| Weight | 200 g |
| Hide Found a better Shipped Price on Frontend? | No |
Beautiful Ultra Wide Angle (UWA) Eyepiece, for beautiful observation sessions with your telescope. This 7-element UWAN eyepiece is ideal for rich-field observations at medium-high power.Extremely good price for its quality: look around and compare! Ideal for fast focal ratio telescopes (Dobsonian, etc.)
Super Wide FOV
Outstanding ultra-wide field of view: 82 deg. F.O.V.
Fully MultiCoated lenses for excellent light transmittance.
Reduced chromatic aberration.
Improved contrast compared to similar EPs.
Great Contrast
Internally fully blackened (lenses edges and internal spacers)
No flaring or ghosting on high-contrast objects.
Parfocal
Light and Easy
Innovative twist-up rubber eyecup.
Long eye-relief: 12mm.
No internal reflections, kidney beaning or other distracting distortions.
Terrific Fit and Finish
High-resistance anodized black barrel.
Smooth design for no hook up in your focuser.
Threaded for use with 1.25" filters.
| Product Banner Type | discontinued |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Eyepiece Series | UWAN Series |
| Focal Length | 4mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 82° |
| Eye Relief (Designed) | 12mm |
| Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
| Coatings | Fully Multi-Coated |
| Lens Elements | 7 |
| Lens Groups | 4 |
| Blackened Lens Edges | Yes |
| Barrel Type | Tapered barrel |
| Protective Plastic Storage Container | Yes - Free Agena Eyepiece Container |
| Protective Plastic Storage Container Size | Agena 52x80mm |
| End Caps | 2 |
| Field Stop Diameter | 6mm |
| Parfocal | Yes |
| Rubber Eye Guard | Yes (Twist-Up Eyecup) |
| Weight | 200 g |
| Hide Found a better Shipped Price on Frontend? | No |