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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.
SVBONY SV220 Telescope Filter 3nm H-Alpha & OIII Dual-Band |M8 &M20 NGC7000 M17🌌 Capture Crisp Deep-Space Shots (Even Under City Lights)
Meet the SVBONY SV220 3nm Narrowband Filter: a 1.25"/2" ( M28.5×0.6 & M48×0.75) designed to cut through light pollution and reveal stunning nebula details.
✨ Key Selling Points
Ultra-Narrow 3nm Bandpass: Sharp peaks at 500.7nm (OIII) & 656.3nm (H-Alpha) lock onto target wavelengths, eliminating background blur and boosting contrast for crisp, detailed nebulae.
Full-frame compatible: the full-frame SV220 2" telescope filter is designed to fully leverage the large size of full-frame sensors; Greatly reduces the risk of vignetting in wide‑angle lenses (suitable for 2 inches)
OD5 Deep Light Blocking: Blocks 99.999% of city glow, moonlight, and UV/IR noise (300-1050nm range) — shoot stunning images from your backyard, no dark-sky trip needed.
High Transmittance: ≥85% average (OIII+H-Alpha) & >95% peak transmission shortens exposure times, reduces camera noise, and speeds up stacking for pro-level results.
🎯 Ideal Shooting Targets
Emission Nebulae: Orion, Lagoon, Eagle, and Carina Nebula (pops red/orange H-Alpha & blue-green OIII details)
Planetary Nebulae: Ring Nebula, Dumbbell Nebula (highlights gas shell structures)
Supernova Remnants: Veil Nebula (reveals faint filament textures)
👤 Who It’s For
Full-Frame Astro Photographers: 2 inches Fits mainstream sensors (no halo/vignetting).
Urban/Suburban Astronomers: OD5 blocking crushes light pollution — shoot from your backyard.
Nebula Enthusiasts: 3nm precision isolates H-Alpha/OIII for vibrant, detailed nebula shots.
Ready to level up your deep-space imaging? This filter turns light-polluted skies into your personal observatory.
Review of the SVbony SV220 3nm Dual band H-Alpha&OIII Filter
by Jim Thompson, P.EngBased on Jim Thompson's field testing, the SV220 3nm Filter precisely targets the O-III and Hα core bands within its spectral performance, with peak transmission rivaling top-tier industry brands. This ensures every intricate detail of nebulae is captured. In practical compatibility, the Hα band's higher f-ratio sensitivity allows it to fit most mainstream telescopes, meeting the equipment needs of different enthusiasts. Its advantage of offering the “lowest cost per unit SNR” is our solution for users working within budget constraints.
The following chart shows the results of actual tests conducted by Jim Thompson.If you're seeking a 3nm narrowband filter that delivers “professional-grade performance at an entry-level price,” this authoritatively tested product may be the optimal solution for effortlessly launching your deep-sky photography journey.
We would also like to extend our special thanks to Mr. Jim Thompson (P.Eng) for his professional and rigorous evaluation! SV220 H-Alpha & OIII 3nm Nebula Filter - Buyer's ReviewThanks Steven Cokins for sharing
NGC2070 - Tarantula Nebula
Photographed in Bondiburg, Australia
22 x 300sec subs/16 x darks/50 x flats/40 x biases
SV503 70mm f/6.78 quadruplet ED
SV605cc camera
SV241 power hub
SV226 filter draw
SV220 1.25inch 3nm Ha/OIII narrowband filter
SV106 50mm Guide Scope
touptek 463m guide camera
mele quieter 4c
skywatcher adventurer gti
gemini auto focuserThanks to photographers Hiroaki usShipping
Order Processing
Almost 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 Time
Delivery 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 & Refund
We 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 Time
We offer a 1-year warranty.
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Guarantee
Guaranteed 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.
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If you have any questions or inquiries about our products or services, please feel free to contact us.Why shop with Svbony Offical Store?
