LAIDA 2" SHO Narrow-Band Filters Kit Design for Deepsky Imaging Astro Monochrome Cooled Camera

The SII Extra Narrowband Filter transmits a 5nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution. This SII filter blocks infrared wavelengths from 700nm to 1000nm so you don't need a separate IR-Cut filter. Due to the narrow bandwidth and high transmission rate of this filter, you will experience a major boost to contrast.
Specifications:
1. Brand: LAIDA
2. Size: 2-Inch
3. Substrate Thickness:1.85mm
4. Clear Aperture: 44mm
5. Wavelength Range: 300-1000nm
6. CWL: 672nm
7. FWHM: 5nm
8. Blocking: ≥OD5
9. Peak transmittance: ≥85%
10. Surface Quality: 60/40
11. Surface parallelism: 1/4λ
12. Thread: M48x0.75
13. Double Thread: Yes
14. Net Weight: 14g/PCS
Package Includes:
 2" SII 5nm
 PP Plastic Box

The H-Alpha is an extremely narrow emission-line filter that works by allowing a 5nm bandwidth of light, centered on the 656.3nm wavelength through, and blocking the transmission of contrast-killing light pollution wavelengths. Wavelengths that are responsible for natural light pollution, or skyglow, are drastically reduced, as is artificial light pollution caused by high- and low-pressure sodium vapor and mercury vapor lights. This H-Alpha filter also blocks infrared wavelengths from 700nm to 1000nm so you don't need a separate IR-Cut filter.
Specifications:
1. Brand: LAIDA
2. Size: 2-Inch
3. Substrate Thickness: 1.85mm
4. Clear Aperture: 44mm
5. Wavelength Range: 300-1000nm
6. CWL: 656.3nm
7. FWHM: 5nm
8. Blocking: ≥OD5
9. Peak transmittance: ≥85%
10. Surface Quality: 60/40
11. Surface parallelism: 1/4λ
12. Thread: M48x0.75
13. Double Thread: Yes
14. Net Weight: 14g
Package Includes:
 2" H-Alpha 5nm
 PP Plastic Box

The Narrowband OIII filter is designed for nebula observation allowing 5nm bandwidth of light centered on a wavelength of 500.7nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high- and low-pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere.
Specifications:
1. Brand: LAIDA
2. Size: 2-Inch
3. Substrate Thickness: 1.85mm
4. Clear Aperture: 44mm
5. Wavelength Range: 300-1000nm
6. CWL: 500.7nm
7. FWHM: 5nm
8. Blocking: ≥OD5
9. Peak transmittance: ≥85%
10. Surface Quality: 60/40
11. Surface parallelism: 1/4λ
12. Thread: M48x0.75
13. Double Thread: Yes
14. Net Weight: 14g
Package Includes:
 2" OIII 5nm
 PP Plastic Box