NPB – Narrow Pass Band Nebula (496BP22) 1.25″ Astronomy Filter
Quick info
Specifications
Download DataDownload Transmission CSV
Spectral Curves
Detailed Specifications
| Description | Narrow Pass Band Nebula (NPB) Filter – 496BP22 |
Short Description | An ultra high contrast type of filter that is very effective for small and fainter emission planetary nebula, as well as a variety of bright nebula, especially through larger scopes. 1.25 inch diameter. |
|---|---|---|---|
| FWHM Bandwidth Tolerance (nm) | +5/-2 |
FWHM Bandwidth (nm) | 23 |
| Center Wavelength Tolerance (nm) | +4/-4 |
Center Wavelength (nm) | 496 |
| Blocking | ≥ OD2 540-590nm |
Angle of Incidence | |
| Search Size | 28.5 |
Search FWHM | 23 |
| Search CWL | 496 |
Search Cut-on | 484.5 |
| Search Cut-off | 507.5 |
Minimum Surface Quality | |
| Product Type | Inventory Type | ||
| Physical Thickness | Shape | ||
| Parallelism | Mounting (Outer Ø - Thickness - Clear Aperture in mm) | ||
| Flatness | Physical Diameter | ||
| Coating Type | Fluorescence Component | ||
| Filter Type | Filter Application | ||
| Transmitted Wavefront Distortion | ≤ 3 waves |