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A new galaxy and nebula filter intended for shooting not only nebulae, but also galaxies by the use of the transmittance around the near infrared region. Considering the high quantum efficiency (QE) characteristics of the latest cameras (such as IMX585 and IMX464) in the near-infrared region and taking into consideration that this region is less susceptible to artificial light pollution, the filter adds high transmission in the near-infrared (NIR) band. This spectrum design improves the image signal-to-noise ratio and contrast by capturing signal in visible bands and NIR regions while maintaining good colour balance and being easier to manage in post-processing.
SVBONY SV240 2" Multi-Narrowband Galaxy Filter | Blocks Bortle 8 Light Pollution🌌 Shoot Stunning Deep-Space Shots Even in Bortle 8 Light-Polluted Skies
The SVBONY SV240 2" Multi-Narrowband Filter is built for urban astronomers who refuse to let city glow ruin their imaging. This 2-inch filter targets key nebula wavelengths while crushing light pollution, making it your go-to tool for capturing vivid cosmic details from downtown or suburban backyards.
✨ Key Selling Points
Bortle 8 Light Pollution Blocking: Boasts >OD4 average cut-off depth (blocks 99.99% of unwanted light), letting you shoot clear images even in the brightest urban environments (Bortle 8 = city centers, bright suburbs).
Multi-Narrowband Precision: Covers 4 critical nebula emission lines (H-Alpha/ OIII/ H-Beta) with high transmittance:
T>97% @ 656.3nm (H-Alpha)
T>88.2% @ 500.7nm (OIII)
T>95% @ 486.1nm (H-Beta)
Balances ""filtering noise"" and ""retaining detail"" with optimized bandwidths (25nm/22nm/115nm).
2" Full-Frame Compatibility: 44mm clear aperture fits 2-inch telescopes/filter wheels, and works with 99% of mainstream astro systems—no vignetting for full-frame sensors.
Wide Wavelength Coverage: 300-1100nm range (with >98.2% average IR transmittance @ 830-870nm) supports diverse deep-space targets.
🎯 Ideal Shooting Targets
Emission Nebulae: Orion, Lagoon, and Eagle Nebula (vibrant H-Alpha/OIII details)
Reflection Nebulae: Witch Head Nebula, Iris Nebula
Galaxies & Star Clusters: Andromeda Galaxy, Pleiades Star Cluster
Planetary Nebulae: Ring Nebula, Dumbbell Nebula
👤 Who It’s For
Urban Astronomers: Perfect for Bortle 8 environments (city centers, bright suburbs) where light pollution is severe.
2" Equipment Users: Fits 2-inch telescopes, filter wheels, and full-frame astro cameras.
Versatile Imagers: Covers emission/reflection nebulae, galaxies, and star clusters—no need to swap multiple filters.
Casual to Intermediate Photographers: Easy to use, with high transmittance that reduces exposure times and camera noise.
Ready to turn your light-polluted backyard into an urban observatory? The SV240 filter lets you capture stunning deep-space shots without traveling to dark-sky sites.Review of SV240
Let's have a look at what our client said. The following information was provided by Leo Yu and taken from Facebook, thanks for sharing:
NGC 891 the "Silver silver" Galaxy is about 32 million light years away - 4 hours of integrations from 1 night
"This photo at first glance may seem nothing special..... but it was actually taken in abysmal condition!
1) This is imaged from a very bright suburb.... bortle 8 some may say even bortle 9
2) It was a night with a quarter moon
3) ok ok you may think 1+2 was nothing unusual... the kicker is that this was through the thick smog from the wild fire smokes!.... see the weather forecast and actual satellite image of the smoke condition. and for DSO transparency is much more important than seeing.... and I would say the rating was BELOW poor.... polaris was barely visible with AVERTED vision.
How......? This is taken with the SVBONY new SV240 filter...... its a very interesting design.
If the Optolong L-eXtreme dual narrowband filter have a love child with a UHC filter and IR pass filter, you would get the SV240
instead of 7nm bandgap of a typical dual band filter
It has 24nm for the OIII, 20nm for Ha, and 115nm in NIR
The wider bandgap is a good compromise to be able to capture what would normally be broadband DSO but still be able to filter out most of the light pollutions.
It will still function as a dual narrow band filter on emission DSO, I will try to post some examples later. I tried it with the veil nebula before and it works great for HOO Of course it is not quite as good as the L-eXtreme, I would say the difference is about 80-90% there but that's expected with the wider band gap
Its a neat 3-in-1 able to image both broadband and narrowband....
What about the IR-pass portion? I have not been able to use that part as it is a function for camera with integrated guide sensor like the ASI2600mc DUO. where the guide camera is sensitive to IR and the IR pass portion help make guiding easier but I don't have a similar camera
Seem great for folks who are starting to get into filters but dont want to buy too many filters."
📷cr. Alexandre Santana
Thanks for sharing from FB.
The Elephant Trunk Nebula, a striking region of interstellar gas and dust located in the vast IC 1396 complex, is a favorite target for astrophotographers due to its intricate structure and rich colors. This celestial wonder, sculpted by powerful stellar winds and radiation from nearby massive stars, stands as a testament to the dynamic forces shaping our universe.
Over the course of four nights, I carefully collected the necessary data to bring out the beauty of this nebula. Guiding proved to be quite a challenge with my AZ-GTi mount, but with persistence and refinement, I ultimately managed to stack a total of eight hours. The #sv555 impressed me with its remarkable sharpness and outstanding light-gathering capability, providing incredible detail in the final image.
However, I must acknowledge that the SV240 filter might not have been the ideal choice for this project. In future endeavors, I plan to acquire the SV220, which should better suit my needs and enhance the results even further.
**Equipment Used:**
- AZ-GTI HQ mode
- SVBONY 555 (new version)
- ZWO 585 MC Pro
- SVBONY 30/120 guide scope
- ZWO 120 Mini guide camera
- SV240 filter
Clear skies!
📷Photo by: Dee El Pee
Thanks for sharing from FB.
The Helix Nebula.
I shot this with an Svbony SV240 filter, which is a multi-band light pollution filter. I was worried that it might lose some of the natural colour, but it's done well. I used the Hubble image linked below as a reference, but after colour calibration (SPCC in PixInsight), I didn't fiddle with the colours much at all. I note that the Hubble image has some areas of magenta that I don't, but otherwise, it's pretty close!
Some questions about SV240
Q: What is the difference with SVBONY SV220 mainstream dual narrowband astrophotography filters?
A: Dual narrowband filters are mainly used for emission nebulae, planetary nebula, and supernova remnants astrophotography. SV240 can be used for both traditional emission nebulae and galaxies, reflection nebulae, and star clusters.
Q: Which equipment can be used with SV240？
A: Because SV240 has high transmittance in the near-infrared region, we recommend NIR-enhanced sensors, such as the IMX585 and IMX464.
Q: Do these filters produce halos? What kind of primary mirror are recommended?
A: Using the infrared astrophotography filter will often cause halos in near-infrared; We recommend using SV240 with a reflective or APO refractor.
Q: Does the SV240 filter provide an improvement in photoing broadband galaxy targets?
A: Yes, SV240 can be seen as the combination of SV220 and UHC filters, and has remarkable performance both in narrowband and broadband targets.
SVBONY Narrowband Filter Quick Selection GuideFilter LinkFilter Model Core Wavelengths Bandwidth Best For Scenarios & Targets Ideal Users
SV227 SHO 5nm H-Alpha(656.3nm) + OIII(500.7nm) + SII(671.6nm) 5nm1. Hubble Palette (SHO false-color) imaging2. Emission nebulae, supernova remnants, planetary nebulae3. Universal for Northern & Southern Hemisphere targets 1. SHO palette enthusiasts2. Advanced deep-sky imagers3. Urban/suburban observers
SV220 H+O 3nm H-Alpha(656.3nm) + OIII(500.7nm) 3nm1. Full-frame sensor imaging (no vignetting/halo)2. High-contrast emission nebulae (Orion, Lagoon)3. Heavy light pollution/moonlit conditions 1. Full-frame camera users2. Advanced users chasing extreme detail3. Hardcore urban observers
SV220 H+O 7nm H-Alpha(656.3nm) + OIII(500.7nm) 7nm1. Single-shot color (OSC) camera imaging2. Balances light pollution rejection and detail retention3. Fast results with entry-level gear 1. Deep-space photography beginners2. OSC camera owners3. Budget-friendly suburban observers
SV220 S+O 7nm SII(672nm) + OIII(500.7nm) 7nm1. Fine textures of supernova remnants (Veil Nebula, Cygnus Loop)2. Contrast between oxygen & sulfur layers in nebulae3. Moderate light pollution environments 1. Supernova remnant enthusiasts2. OSC/monochrome camera users3. Imagers targeting faint, detailed structures
SV240 Multi-Band Multi-band 2"1. Bortle 8 heavy light pollution environments2. Emission/reflection nebulae, galaxies, star clusters3. Full-frame wide-field imaging 1. Urban astronomers (city centers/bright suburbs)2. 2" full-frame camera/telescope users3. Versatile imagers avoiding filter swapping
SV260 Multi-Broadband H-Alpha, OIII, SII, H-Beta, N-II Multi-band 2"1. Suburban light pollution reduction2. Galaxies, reflection nebulae, globular star clusters3. Natural color wide-field astrophotography 1. Wide-field astrophotography lovers2. 2" equipment owners seeking full-frame coverage3. Casual-intermediate users targeting diverse deep-sky objects 5 Quick Decision Tips
- Want Hubble Palette shots? → Go with SV227 SHO 5nm (full 3-band coverage)
- Full-frame gear + heavy light pollution? → Pick SV220 H+O 3nm / SV240
- Beginner or OSC camera user? → Start with SV220 H+O 7nm (easy to use + great value)
- Obsessed with supernova remnants? → Lock in SV220 S+O 7nm (sulfur-oxygen specialty)
- 2" wide-field for galaxies/clusters? → Choose SV260 Multi-Broadband (natural color + multi-target coverage)
Country of FilterSize2-inchSubstrate Thickness2mmClear Aperture44mmWavelength Range300-1100nmFWHM24nm & 20nm & 115nmSurface Quality60/40Surface Parallelism1/4λThreadM48x0.75Single ThreadYesNet Weight12.5g / 0.44oz usShipping
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