Omegon Pro Veil SII Filters - see sulfur nebulae also in light pollution
Looking through your telescope and faint nebulae disappear in ambient light? The Omegon Pro Veil SII 7nm filter solves that. It blocks interfering light and lets only the red-orange light from ionized sulfur atoms through. Thus, faint planetary nebulae, supernova remnants and emission nebulae stand out immediately.

Higher contrast, clear structures
The selective pass-through darkens the background and highlights fine nebular structures. Even from an urban area, you can see details that would otherwise be lost.
For visual and photographic use
The filter works extremely well with the naked eye, as well as with monochromatic cameras. Combine it with H-alpha and OIII filters for full color images of nebulae. Thus, delicate structures come out contrasty and clear.

Sturdy and easy to use
The glass sits in a rugged aluminum mount. You simply screw it into your 2″ eyepiece or camera adapter. No fuss, just point and watch.
What we recommend
✓ Emission nebulae: excellent fit
✓ Planetary nebulae: very detailed
✓ Supernova residues: highly suitable
✓ Deep-sky (SII objects): more contrast and details visible
✗ Galaxies: not suitable
✗ Reflection nebulae: not suitable
Specifications
General
| Feature | Description |
|---|---|
| Type | Filter |
| Series | Veil |
| Design | UHC / narrowband filter |
| Diameter | 2″ |
| Material | Glass |
| Fasteners | Aluminum |
Optical
| Feature | Description |
|---|---|
| Central wavelength | 671.7 - 673.1 nm |
| Bandwidth (FWHM) | 7 nm |
| Passage | High transmission on SII lines |
Connection
| Feature | Description |
|---|---|
| Ocula Connection | 2″ |
| Compatibility | 2″ eyepieces and camera adapters |





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