The Antlia 8-EL UHC Pro Visual Enhanced filter delivers high-performance light pollution reduction for visual astronomy. Designed specifically for observing celestial objects, it excels under moderate light-polluted skies while preserving natural colour balance.
This filter enhances the view of emission nebulae, planetary nebulae, and similar targets by selectively boosting key emission lines. Its high-transmission design improves contrast, allowing faint structures to stand out more clearly.
Key Transmission Lines:
-
95% at 486.1nm (H-beta)
-
95% at 495.9nm (OIII)
-
95% at 500.7nm (OIII)
-
95% at 654.8nm (NII)
-
95% at 658.3nm (NII)
-
95% at 656.3nm (H-alpha)
-
95% at 671.6nm (SII)
-
95% at 673.1nm (SII)
-
5% at 671.6nm (SII) for controlled bandwidth suppression
By combining high transmission (>95%) with effective sodium-light suppression, this filter allows you to observe fine structural details in nebulae, even under moderate light pollution.
Visual Recommendations:
-
Use Large-Aperture Telescopes:
The human eye captures fewer photons at night. To maximise light throughput, use telescopes with 8-inch apertures or larger. This compensates for reduced eye sensitivity in low-light conditions, ensuring bright, detailed views while maintaining light pollution suppression. -
Enhance Contrast in Nebulae:
This filter is optimised to boost contrast in planetary and emission nebulae, helping you see intricate nebular structures more clearly.
| Emission lines | Suggested observation targets |
| 486.1nm (H–beta) | M42 Orion Nebula, NGC 7000 North America Nebula, M16 Eagle Nebula, M8 Lagoon Nebula |
| 495.9nm (OIII) | –Recommended Nebulae: M57 Ring Nebula, NGC 6960 Veil Nebula, NGC 6543 Cat’s Eye Nebula, NGC 6302 Butterfly Nebula |
| 500.7nm (OIII) | M42 Orion Nebula, M57 Ring Nebula, NGC 6992 Veil Nebula on the east side, IC 2177 Seagull Nebula, M104 Broad-shouldered Cap Galaxy |
| 654.8nm (NII) | NGC 6960 Veil Nebula, M1 Crab Nebula, M57 Ring Nebula, NGC 6543 Cat’s Eye Nebula |
| 658.3nm (NII) | M42 Orion Nebula, NGC 6960 Veil Nebula, M57 Ring Nebula |
| 656.3nm (H–alpha) | M42 Orion Nebula, IC 434 Horsehead Nebula, NGC 7000 North America Nebula, M16 Eagle Nebula, M8 Lagoon Nebula, NGC 6960 Veil Nebula |
| 671.6nm (SII) | M42 Orion Nebula, IC 434 Horsehead Nebula, M1 Crab Nebula, M16 Eagle Nebula, M57 Ring Nebula, NGC 6543 Cat’s Eye Nebula |
| 673.1nm (SII) | M42 Orion Nebula, M1 Cassiopeia Nebula, NGC 6960 Veil Nebula, IC 443 Jellyfish Nebula, M27 Sundial Nebula |
Size Available:
- Mounted 2”
Filter Ring:
- 2” (M48*0.75)
- Ultra-thin filter cell to minimize vignetting by maximize possible clear aperture
- Black Anodized Finish
- Laser Engraving No Fading
Not Recommended:
- Solar imaging
- DO NOT LOOK AT THE SUN WITH THIS FILTER DIRECTLY
- Serious eye damage will result if you fail to observe the warning.
Reviews
There are no reviews yet.