L-Para Dual Band Filter - 2"
Optolong
From ~$263.82
4 stores
The Optolong L-Para is a dual narrowband 10nm light pollution filter with 10nm FWHM bandpasses centered on OIII (500.7nm) and H-Alpha (656.3nm). Transmission of nebula emission lines exceeds 85% in systems with focal ratios of F2 and above, making it adaptable to both fast optics and standard telescope systems. Designed for use with color cameras to produce full-color astroimages in a single shot, this dual-band filter is ideal for emission nebulae such as the Soul Nebula and Veil Nebula. The design features optimized anti-halo performance, enhancing the capture of bright stars.
Astronomy Plus
L-Para 10nm Dual Narrowband Light Pollution Filter (L-PARA-2)
Worldwide shipping
CA$361.00
~$263.82
Starizona
L-Para Dual Band Filter - 2" Mounted
Worldwide shipping
$279.00
High Point Scientific
L-Para 2" Dual Band Filter
Ships to US only
$279.00
Astroshop.eu
Filters L-Para 2"
Worldwide shipping
€269.00
~$317.12
Specifications
| Blocking Range | 300-1000 |
| OIII Wavelength | 500.7 |
| Substrate Material | Optical Glass |
| FWHM - OIII | 10 |
| Filter Size | 2 in |
| Thread Type | M48 x 0.75 |
| Clear Aperture | 44 mm |
| FWHM - Ha | 10 |
| Ha Wavelength | 656.3 |
| Glass Thickness | 1.85 mm |
| Surface Quality | 60/40 |