OPT 2" Tri-Band filter: H-beta, OIII, & H-alpha (Pre-owned) MINT
| Availability: | In stock |
| Delivery time: | Hurry! Buy Now before it is GONE! |
The OPT 2" Tri-Band Filter is a premium multi-bandpass filter designed to capture three key emission lines—H-Beta, OIII, and H-Alpha—making it ideal for high-contrast deep-sky imaging and visual observation. This pre-owned filter is in mint condition, showing virtually no signs of use and delivering flawless optical performance.
By transmitting only the critical wavelengths from nebulae and blocking out most light pollution and unwanted spectral lines, the Tri-Band Filter dramatically enhances contrast and detail for astrophotography and visual astronomy. Its precision optical glass and durable coatings provide sharp, high-contrast results, while the 2" format fits a wide range of eyepieces, adapters, and camera accessories.
Key Specs:
- Filter Type: Tri-Band (H-Beta, OIII & H-Alpha) narrowband filter
- Size: 2" (fits standard 2" eyepieces and imaging accessories)
- Transmission: Passes three key emission lines while blocking unwanted light and pollution
- Construction: High-quality optical glass with advanced multi-layer coatings
- Compatibility: Suitable for visual observing and astrophotography with 2" telescope accessories
Use Cases:
- Capturing high-contrast images of emission and planetary nebulae
- Enhancing detail and structure under light-polluted skies
- Maximizing data collection for astrophotography using color or mono cameras
- Works with refractors, reflectors, and catadioptric telescopes with 2" focusers