SVBONY SV220 Telescope Filter, 1.25 inches Dual-Band Nebula Filter, H-Alpha and O-III Narrowband Filter for One-Shot Color Cameras, Light Pollution Filter for Astrophotography

SVBONY dual narrowband H-Alpha/O-III 7nm narrowband filters are specially designed for astrophotography in light-polluted environments, allowing imaging under bright artificial light pollution and moonlight conditions to capture color images without using multiple filter combinations. Images are most useful with single-use color cameras; can be used for imaging emission nebulae, planetary nebulae, and supernova remnants; high transmittance and sharp cutoff can greatly enhance contrast, showing the most detailed information about deep sky objects; designed to drastically cut off sodium Artificial light interference from vapor or mercury vapor street lights and other unwanted interference (e.g. sky glow); Dual Band Narrow Band Filters are not suitable for visual observation and are not designed for imaging or observing the sun. Please note that the SV220 is not Well suited for fast telescopes, some users have reported that dual-band OSC filters paired with RASA can cause band shifts, thus clipping HA data. Specifications:Brand: SVBONY;Model: SV220;Name: Duo-Band OSC Filter;Size: 1.25-Inch;Substrate Thickness: 1.85mm;Clear Aperture: 26mm;Wavelength Range: 300-1100nm;FWHM: OIII (7nm) & HA (7nm) 9.Blocking: >OD5;Peak transmittance: 500.7nm@T>90%; 656.3nm@T>94%;Surface Quality: 60/40;Surface parallelism: 1/4?;Thread: M28.5*0.6;Single Thread: Yes;Net Weight: 7g; Package Includes: 1XSVBONY 1.25" 7nm Duo-Band OSC Filter; 1XPP Material Plastic Box

Features of SVBONY SV220 Telescope Filter, 1.25 inches Dual-Band Nebula Filter, H-Alpha and O-III Narrowband Filter for One-Shot Color Cameras, Light Pollution Filter for Astrophotography

Reduce light pollution; SV220 telescope filter can greatly reduce the interference from natural light sources such as moonlight or artificial light pollution such as street lighting | Astrophotographic;the filter enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; the filter allows high-contrast imaging even in areas with strong light pollution | Wide range of application; the 1.25 inch dual band filter can be used with most cameras and filter wheels; no worry about not applicable | Improving contrast; an increase in contrast can be perceived as an increase in brightness; the filter makes the contrast of the nebula and sky background increase; not the nebula brighter | Strong applicability; the filter applicable to SVBONY's electronic cameras and astronomical cameras which the apertures are 1.25-inch; but for the different telescopes and cameras; the installation order of filters is also different | Easy to use; the dual-band filter makes it possible to simplify and decrease the difficulty and cumbersomeness of post-processing for users | Standard 1.25 inch size; the 1.25 inch size of the filter fits most telescope; and the weight is 5.4g; its central wave length reach 500.7nm

Specification of SVBONY SV220 Telescope Filter, 1.25 inches Dual-Band Nebula Filter, H-Alpha and O-III Narrowband Filter for One-Shot Color Cameras, Light Pollution Filter for Astrophotography

Product Details
Dimensions	2.52X2.52X0.94
Weight	0.1