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7nm Dual Narrowband Filter Set Entry-Level "Hubble Palette" Gear for Deep-Sky Photography SVBONY SV220

  • Features dual Ha&OIII and SII&OIII filters covering nebula core spectra, enabling simple post-processing to achieve the “Hubble color” without worrying about single-filter limitations;
  • 7nm ultra-narrow bandwidth reduces stray light from street lamps and moonlight, darkening the sky background even in urban areas. Capture pristine deep-sky images right in your backyard - no need to trek to the outskirts;
  • Compatible with SVBONY and mainstream cameras, no complex setup required. Single filter shooting is possible, with simple post-processing for layering;
  • From beginner to advanced: Start with single-filter test shots, then master dual-filter compositing to extract details. This approach adapts seamlessly from “novice experimentation” to “detailed creation.” 


 

 

 

Model​ SV220 SV220
Name​ Duo-Band OSC Filter​ Duo-Band OSC Filter
Size​ 2-Inch​ 1.25-Inch
Substrate Thickness​ 1.80mm​ 1.85mm
Clear Aperture​ 44mm​ 26mm
Wavelength Range​ 300-1100nm​ 300-1100nm
FWHM​ OIII (7nm) & HA (7nm) ​ OIII (7nm) & HA (7nm)
Blocking​ OD5​ >OD5
Peak transmittance​ 500.7nm@T>90%; 656.3nm@T>94%​ 500.7nm@T>90%; 656.3nm@T>94%​
Surface Quality​ 60/40 ​ 60/40
Surface parallelism​ 1/4λ​ 1/4λ
Thread​ M48x0.75​ M28.5*0.6
Single Thread​ Yes​ Yes
Net Weight​ 12.5g / 0.44oz /0.027lb​ 7g
Model SV220 SV220
Name SII & OIII Duo-Band OSC Filter SII & OIII Duo-Band OSC Filter
Size 1.25-Inch 2-Inch
Substrate Thickness 1.80mm 1.85mm
Clear Aperture 26mm 44mm
Wavelength Range 300-1000nm 300-1000nm
FWHM 7nm 7nm
Blocking ≥OD5 ≥OD5
Peak transmittance ≥88% ≥88%
Surface Quality 60/40 60/40
Surface Parallelism 1/2λ 1/2λ
Thread M28.5x06 M48x0.75
Single Thread Yes Yes
Net Weight 7g 15-20g
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