- Wavelength: 656.3 +0.2 / -0
- Emission Line: Ha
- Operating Temperature: 23.0
- Parallelism: Commercial
- Bandwidth (FWHM): 1.0 ±0.2 nm
- Minimum Transmission: 45%
- Blocking: 1x10-4 avg. X-Ray to FIR
- Size: 25.0 Ø +0 / -0.25
- Thickness: 6.4 +0 / -nom
- Scratch-Dig: Commercial
- Clear Aperture: 21mm Ø min
- Flatness: Commercial
- Effective Refractive Index: 2.05
- Filter Type: 2
$288.00
$242.00
$219.00
In Stock