L2 Dual Combo 2"
Optolong
From $569.00
3 stores
In stock
The Optolong L2 Dual Combo 2" combines L-Synergy and L-eXtreme dual-narrowband filters to enable Hubble-palette imaging with color cameras using just two filters instead of three. With premium 7nm dual-band filters, these filters provide incredible light pollution suppression and contrast, revealing nebulosity in crisp detail even in challenging light-polluted environments. Both filters feature a standard 2" threaded filter design and support telescope systems as fast as f/3.3 and slower. This innovative solution allows one-shot-color camera users to capture stunning SHO (SII, Ha, and OIII) images without switching to monochrome equipment or purchasing expensive full filter sets.
Specifications
| SII Transmission Wavelength | 672.4 |
| Blocking Range | 300-1050 |
| L-eXtreme Bandpass Ha | 7 |
| Filter Size | 2 in |
| Ha Transmission Wavelength | 656.3 |
| Substrate Thickness | 1.85 mm |
| Included Filters | L-eXtreme and L-Synergy |
| L-eXtreme Bandpass OIII | 7 |
| Transmission Rate | 85% |
| Surface Quality | 60/40 |
| Thread Type | M48x0.75 |
| L-Synergy Bandpass OIII | 7 |
| Coating Technology | Ion-Assisted Deposition |
| OIII Transmission Wavelength | 500.7 |
| Substrate Material | Optical Glass (B270) |
| Parallelism | 30″ |
| L-Synergy Bandpass SII | 7 |