- The SVBONY 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;
- OIII 5nm 2" Filter is designed to deliver 90% transmission at the 500.7nm line which provides you with well defined nebulae structures;
- 300-1000nm wavelength range; the SVBONY OIII 5nm 2" Filter transmits a 5nm bandwidth of light that is centered at 500.7nm;
- 2 inch mounted; the filter can thread directly into the 2 inch barrel of your telescope eyepiece.
Note: This OIII filter is NOT for use on the Sun, and also unsuitable for telescopes with a focal ratio below F/5.
Get $20 OFF (Coupon code: Cuiv20)
Special offers and product promotions
A true OIII Filter that works awesome!
Model | SV227 |
Type | OIII Filter |
Size | 2-Inch |
Wavelength Range | 300-1000nm |
CWL | 500.7nm |
FWHM | 5nm |
Peak Transmittance | ≥90% |
Substrate Thickness | 1.85mm |
Wavelength Range | 300-1000nm |
Blocking | ≥OD5 |
Clear Aperture | 44mm |
Surface Quality | 60/40 |
Surface Pparallelism | 1/4λ |
Parallelism | 30" |
Thread | M48x0.75 |
Single Thread | Yes |
Net Weight | 12.5g / 0.44oz/0.027lb |
Features
1. SVBONY 2 inch OIII-CCD 5nm Narrow-Band filter for deep sky 2" mounted; can enhances the contrast between the target and the sky; allowing you to capture high-quality images even under the urban sky; suitable for lightly polluted urban areas and relatively dim launch nebulae;
2. 5nm Extra Narrowband Filter; the Oxygen III 5nm Extra Narrowband Filter transmits a 5nm bandwidth of light that is centered at 500nm and drastically reduces other transmissions; including wavelengths of light that are responsible for light pollution;
3. High-quality materials; the SVBONY 2" Filters are made glass import from germany that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength; or CWL;
4. High-level manufacturing process; the filter cell is made of lightweight;strong metal and is CNC machined; sand-blasted; black anodized; and then laser engraved; the result is a super thin filter cell that will produce a clear aperture of 45mm;
5. Powerful functionality; like all SVBONY filters that are designated as "CCD"; this OIII also blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter; make your use more convenient.