Antlia Filter 7nm Narrowband SII Prime Filter - 36mm Unmounted
Antlia Filter 7nm Narrowband SII Prime Filter - 36mm Unmounted
Brands:
Antlia Filter 7nm Narrowband SII Prime Filter - 36mm Unmounted
Application and Performance:
- 90% transmittance at Central Wavelength SII 671.6nm
- With wider FWHM, 7nm Prime narrowband filters can be used with fast optics of f/2 with minimal loss of signal
- Steep spectral profile minimizes halos around bright stars
- A single substrate to eliminate internal reflections
- Narrowband Objects: SII Emission Nebulae, Planetary, Wolf-Rayet Nebulae and Supernova Remnants
- Use in light polluted areas and dark sites
- All Antlia Narrowband filters are edge blackened to eliminate internal reflections from stray light
- Superior optical reliability reduces post image processing
- This filter is ffective for deep sky objects that contain SII emissions
Technical Specifications:
- Basic Substrate: Optical, Single / Non-glued substrate
- Filter Thickness: 2mm+/-0.05mm for Dia36mm unmounted
- FWHM (Full width at half maximum): 7nm
- CWL (Central Wavelength): 671.6nm
- Peak Transmission: ＞90%
- Blocking: > 4OD(0.01% out of band blocking) @ 300-1000nm
- Surface Quality: S/D (scratch/dig)= 60/40 (Refer to MIL-O-13830)
- Transmitted Wavefront: Lambda/4 or better.
- Parallelism: less than 30 arcsec
| Product Status | New |
|---|---|
| Package width | 6 cm |
| Package height | 2.5 cm |
| Package depth | 6 cm |
| No. of parcels | 1 |
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