SVBONY SV220 H-Alpha & OIII 3nm Dual-Band Nebula Filter 1.25/2"

The SV220 H-Alpha 3nm and O-III 3nm Dual-Narrowband Filter enhances astrophotography by reducing stray light and light pollution. With a wide cutoff range of 300 - 1050nm and an average OD5, it effectively reduces stray light and light pollution, enhancing image clarity. Its 3±1nm bandwidth make celestial details clearer. With minimal halo coating, it ensures sharp, high-contrast images. Available in 1.25-inch and 2-inch, it’s suitable for capturing deep-sky objects.TelescopeCameraFiltersEyepiecesOutdoorsMicroscopeTransmissionAction CameraMeeting +26) SVBONY SV220 Telescope Filter H-Alpha & OIII 3nm Dual-Band 1.25/2" Nebula Filter.Two sizes: 1.25-inch ultra narrowband filter has a thread

specification of M28.5×0.6 and a barrel

size of Φ31.75×7 mm; The 2-inch ultra narrowband filter has a thread

specification of M48×0.75 and a barrel

size of Φ50.8×7 mm.Average OD5 cutoff: 3nm H-Alpha and O-III Narrowband Filter covers 300-1050nm wavelengths; filtering key UV to near-IR spectra; Average OD5 reduces light to 0.001%; greatly suppressing stray light and enhancing signal-to-noise ratio for purer images.Minimal halo coating design: the 3nm H-Alpha and O-III Narrowband Filter features a minimal halo coating that reduces glare; ensuring sharp; detailed imaging of celestial objects with enhanced contrast;

color accuracy; and reduced light pollution.Full-Frame Compatible: Full-frame design ensures no vignetting, broad field of view, and accurate

color reproduction. It improves image uniformity, clarity, and contrast, ideal for high-res deep-sky observations, maintaining consistent quality across the frame.(Note: Only two inches are applicable)Peak transmittance > 85%: the ultra-narrowband filter; with its high transmission rate; significantly reduces exposure requirements and doubles the shooting efficiency; It presents ultimate details unaffected by light pollution.FWHM: the SV220 3nm Dual-Narrowband Filter's narrow bandwidth of 3±1nm can effectively filter out most of the background stray light; making the details of the target celestial object clearer.Broad spectral coverage: the telescope filter's cutoff wavelength range of 300-1050nm covers a broad spectral region from ultraviolet light (300nm) to near-infrared light (1050nm); making it suitable for observing a variety of celestial objects. ShippingReturnPaymentGuaranteeContact usShippingOrder ProcessingAlmost all of the standard orders are shipped within 1-2 business days, excluding weekends and holidays. The special orders for some customized products will take a little longer time, the specific time can be confirmed with our sales expert.As soon as your order is ready, we’ll update the tracking number and inform you of the information. If the item you ordered is temporarily out of stock, our customer service team will reach out to you. You can choose to wait until the item is back in stock or cancel your order. Delivery TimeDelivery time depends on destination, logistics mode and other factors.If the products that you purchased are available in our local warehouses, we will ship them from there and it takes about 1-6 business days for delivery as usual.If the product you purchased is in stock at our warehouse in China, we will ship it from there. Delivery time is usually 5-9 business days.Return Thank you for choosing SVBONY! We have established a strict system to ensure product quality in a responsible manner. These products are safe and reliable, and you can buy them with confidence. Should you have any issues, feel free to contact us. Our professional customer support team will patiently help you resolve the problems. We sincerely apologize in advance for any trouble and inconvenience that caused you.Return & RefundWe offer a 30-day unconditional return policy.1. You can get a full refund when you return an undamaged product for any reason within 30 days. Just make sure all products are in original condition and provide us with relevant pictures or videos to prove it.2. If you are not sure whether the product is in brand new condition, you can contact us first. We can help you confirm and provide a return label. 3. We will issue a refund immediately once the product arrives at our warehouse.Processing time usually takes 2-5 business days. Warranty TimeWe offer a 1-year warranty. PaymentYou can use PayPal, PayPal Credit, credit or debit card, Google Pay, and other payment methods at checkout. GuaranteeGuaranteed authentic, we are the official store of SVBONY brand, and the products sold are guaranteed to be authentic. Guaranteed service, one-to-one exclusive customer service, answer all your questions and provide free professional technical support. Guaranteed after-sales, all products purchased from SVBONY enjoy worry-free warranty, your product warranty period is one year.Contact usExclusive customer service online time: 16:00-2:00 If you have any questions or inquiries about our products or services, please feel free to contact us. Why shop with Svbony Offical Store?