• Reduce light pollution; SV220 Dual Narrow bandwidth H-Alpha/O-III 7nm narrowband filter properly designed for astrophotography both in light polluted environment.It 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;
• 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; 
• Useful for imaging emission nebulae, planetary nebulae and supernova remnants. Designed to sharply cut off the inference of artificial light from sodium vapor or mercury vapor street lights and other unwanted disturbance like sky glow.

Note: This filter set is not suitable for telescopes with a focal ratio below F/5.

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• This dual narrow band telescope filter properly designed for astrophotography both in light polluted environment;
• Take color images without needing to combine images with multiple filters. Useful for imaging emission nebulae, planetary nebulae and supernova remnants;
• Designed to sharply cut off the inference of artificial light from sodium vapor or mercury vapor street lights and other unwanted disturbance like sky glow.

• WIFI connection; connect your smartphone for remote control; suitable for bird watching photography and target training; allow you to see the surface of the target in real time on your phone; greatly improve efficiency and comfort;
• CS-C interface; the front end of the camera is CS-mount; equipped with a CS-C adapter ring; which can be used with C-mount lenses or CS-mount lenses for shooting; time-lapse shooting is possible in schedule shooting mode;
• 32G TF card memory; equipped with 32G large-capacity TF card; it does not occupy the storage space of the mobile phone; you can download and share photos in real time;
• The camera is supported by WIFI Mode and UVC Mode. When using uvc mode, you need to use the built-in data cable, connecting the Type-C port to the device, and the USB port to the PC; Open the UVC mode software on the PC (Amcap software can be used), select UVC CAMERA, and enter the image interface.

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• HD Glasses; Equipped with ED Glass to eliminate chromatic aberration and deliver images of outstanding resolution and contrast;
• Lightweight and Compact; SV410 ED spotting scope weighs only 550g; easily to be hold in the palm and put in belt pack or shoulder bag; ideal for bird watching and observation enthusiasts;
• High quality optical design; FMC coating improves color saturation of the image; 10Elements/7Groups lens structure maximum light transmission for bright crisp field of view 2m Close Focus Distance brings detail of this micro world that you would not see normally; 18mm eye relief with twist-up eyecup design is suitable for people wearing glasses or not;
• Waterproof storage bag; soft bag adopts high quality waterproof material to provide effective protection; you can use the spotting scope on tripod with soft bag on;
• 9-27x magnification range spotting scope can easily lock your target and zoom in for more details; 56mm objective lens can pull in more light for bright image.

• Svbony SV205 with SONY IMX415 CMOS sensor and USB3.0 Type-B port. It complies with the standard UVC protocol and no need to install SVBONY driver. It is the plug and play device, suitable for beginner users for astronomy photography;
• The image sensor uses dark light compensation technology to greatly improve the camera's image clarity in low light conditions;
• In MJPG video format;you can record video quickly and the frame rate up to 30FPS at 2K resolution 1920x1080; You can also choose YUV uncompressed video format;
• The camera allows you to capture a real-time video and transport to your laptop or PC;machined aluminum 1.25" adapter barrel for direct threaded connection to almost any telescope.

Blog: How to connect the phone with SV205 Camera

• FMC coating; The fully multi-coated objective lens ensures high transmittance for a brighter and clearer aperture, and providing clear, detailed and high contrast images;
• Wide angle; 26°wide angle binoculars gather more light than our eyes, so it works better in observing the moon, constellations, Milky Way etc;
• The long depth of field design; it almost seems as if you are standing on a very high mountain in absolute darkness; from the recent focus distance to infinity; no need to twist the eyepiece frame to focus and operation portable;
• With a magnification of 2.1 times, you can observe not just the main stars in a constellation, but many you have probably never even seen before;
• Finely crafted; fine workmanship; exquisite appearance; easy to carry; the objective lens has a standard 2-inch filter thread; which works better with a light-astronomical astronomical filter.

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• Flat field eyepiece; offer corrected field curvature; you will observe an image not just in the centre but right out to the outer edge;
• Clear image; fully multi-coated and blackened lens edges to reduce reflections; 8 lens 5 groups give you an image of high colour purity and excellent contrast;
• Comfortable; 65° wide field of view keeps stars planets and lunar details in focus across the field of view; 20mm eye-relief is ideal for long intensive observing sessions;
• Eyecup; folded-up eyecup fit for glasses wearers or not; removing eyecup has a m42x0.75 thread for astrophotography;
• 18mm eyepiece; medium power eyepiece for a bright, low power view of the moon and most all deep-sky objects.

• 70 Degree Eyepiece in Red Color, Great for Viewing the Night Sky;
• Super-wide 70-Degree apparent field of view;
• Twist-Up eyecups, and barrels threaded for use with 1.25" eyepiece filters.