Omegon Pro Veil OIII Filters - see emission nebulae where they normally disappear
You look through your telescope and notice that faint nebulae fall away in the bright sky. This filter helps you get right through that. The Omegon Pro Veil OIII filter cuts out distracting light and lets through exactly those colors that emission nebulae emit. This makes the object stand out from the background and you finally see what's really there.
More contrast, immediately visible
This filter acts as a spotlight for mists. It blocks street lights and natural sky glow. Only the light from oxygen mists gets through. This keeps the background dark and makes nebula structures stand out clearly.

Designed for awkward observation spots
Are you observing from the city or a residential area? Then this filter makes a big difference. Nebulae that normally disappear in light pollution become visible again. Even under dark skies you will see extra detail and sharper shapes.
Extremely narrow passage for maximum effect
The very narrow bandwidth of 3 nm allows almost only OIII light to pass through. That means higher contrast and more detail than with wider filters. Ideal if you really want to see structure, not just a faint smudge.

Suitable for both viewing and photography
Visually, you see more detail at medium magnifications. With a camera, you capture fine nebula structures with high contrast. The filter works with telescopes of different diameters and is a strong choice for OIII astrophotography.
Solid and easy to use
The filter sits in a sturdy aluminum mount and is made of high-quality glass. You screw it directly into your eyepiece or camera adapter. No settings. Just look and enjoy.
What we recommend
✓ Emission nebulae (OIII): excellent fit
✓ Planetary nebulae: very detailed
✓ Supernova residues: highly suitable
✓ Deep-sky (OIII objects): markedly more contrast
✗ Galaxies: not suitable
✗ Reflection nebulae: not suitable
Specifications
General
| Feature | Description |
|---|---|
| Type | OIII nebula filter |
| Series | Pro Veil |
| Design | Narrowband filter |
| Diameter | 2″ |
| Material | Glass |
| Fasteners | Aluminum |
Optical properties
| Feature | Description |
|---|---|
| Central wavelength | 495.9 - 500.7 nm |
| Bandwidth (FWHM) | 3 nm |
| Passage | Very high transmission on OIII lines |
Connection
| Feature | Description |
|---|---|
| Ocula Connection | 2″ |
| Compatibility | 2″ eyepieces and camera adapters |





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