SVBONY SV240 Multibandpass Filter OIII Light Pollution Reducing Narrowband Telescope Filter H H 2-inch

------------------------------------------------------------------------------------------------------------------ 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ------------------------------------------------------------------------------------------------------------------

With a cutoff depth of ≥ OD4, the SV240 multibandpass filter blocks light pollution and can be in cities 1 through 8. You can take sharper, higher-contrast astrophotographs even in urban areas, without having to go to the countryside. Wide Range of Applications: The SV240 multibandpass filter effectively selects Ha;OIII;H-Beta wavelengths. Because it eliminates the need for multiple filters, it solves the problem of conventional filters being unsuitable for photographing galaxies and star clusters, allowing you to photograph most deep-sky objects. Wavelength range: Near-infrared (NIR) blocks wavelengths up to 1100 nm. It offers powerful processing capabilities for wavelengths between 300 and 1100 nm, effectively isolating light pollution bands. FWHM: 25nm; 22nm; 115nm; The SV240 multi-narrowband filter with Hα, OIII, and Hβ wavelength ranges allows for the capture of colorful images. BORTLE 8 Resistance: The multibandpass filter is resistant to cities from Bortle 1 to Bortle 8, making it suitable for almost all cities. Multi-layer coating: The SV240 is coated with multiple layers of film, including a buffer layer, waterproof layer, and adhesive layer. Thanks to its superior coating process, the SV240 improves the signal-to-noise ratio and contrast of images while maintaining good color balance. Note: Optical filters using infrared light often produce halos in the near-infrared region. The overlapping of halos generated by the filter itself worsens the halo effect, so please purchase with caution. The SVBONY SV240 multibandpass filter is designed for urban astrophotography, efficiently separating Ha, OIII, and H-Beta from background light pollution. It allows for urban astrophotography without long trips to the suburbs, saving time and increasing efficiency, and is suitable for photographing most galaxies, reflection nebulae, emission nebulae, star clusters, and other celestial objects.