Svbony SV220 7nm Dual Narrowband Filter Set "Hubble Palette" Gear for Deep-Sky Photography
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Detailed product description
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- Brand: svbony
- Sales: 2
- Package size: 8 × 8 × 3 cm
- Package weight: 0.13 kg
- Rating: 5.0 / 5
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Model
SV220
Name
7nm H-Alpha&OIII Duo-Band OSC Filter
Size
2-Inch
1.25-Inch
Substrate Thickness
1.80mm
1.85mm
Clear Aperture
44mm
26mm
Wavelength Range
300-1100nm
FWHM
OIII (7nm) & HA (7nm)
Blocking
OD5
>OD5
Peak transmittance
500.7nm@T>90%; 656.3nm@T>94%
Surface Quality
60/40
Surface parallelism
1/4λ
Thread
M48x0.75
M28.5*0.6
Single Thread
Yes
Net Weight
12.5g / 0.44oz /0.027lb
7g
7nm SII&OIII Duo-Band OSC Filter
300-1000nm
7nm
1/2λ
M28.5x06
15-20g
SVBONY SV220 1.25"/ 2" H-Alpha+OIII 7nm Dual-Band Filter
SVBONY 7nm dual band filter is designed to drastically reduce the effect of light pollution. The 7nm bandwidth means it strongly isolates
the nebulae's emissions into H-Alpha (red) and OIII (green-blue) from anything else. It blocks light pollution, maximizes the signal from
nebulae, and darkens the sky background. It also blocks artificial light from mercury vapor lamps, high- and low-pressure sodium vapor
lights, and unwanted natural light caused by the emission of neutral oxygen in our atmosphere.
Dual Narrow Bandwidth H-Alpha/O-III 7nm Narrowband Filter Properly Designed For astrophotography of emission nebulae, planetary
nebulae and supernova remnants. The high transmission and sharp cut-off greatly enhances the contrast of image and brings out the
most detailed information of those deep-sky objects.
SVBONY SV220 1.25" / 2"SII +OIII 7nm Dual-Narrowband Nebula Filter
The SV220 SII & OIII 7nm is a Duo Band Filter. It is designed to be used in combination with the SV220 H-Alpha & OIII Duo Band Filter to provide a superior method for achieving the SHO (Hubble Pallet) narrow band colour balance with colour imaging cameras. The SII and OIII Filter provides the missing band data so that owners of colour cameras can achieve the SHO colour balance in their narrow band images. The Duo-band filter (SII+OIII) has a high transmission of over 85% at its center wavelength (500.7nm and 672nm). It can effectively improve the quality of the image by making the sky background of the image darker while maximizing contrast throughout the image and enhancing the contrast of your pictures, thus making it easier to display the details of the stars. In areas with very serious light pollution, this filter can also selectively filter light pollution.
Features