• Suitable for OTA with focal length within 700mm; SV165 compact mini guide scope can be used with astronomical telescopes with focal length within 700mm;
• Clear and sharp vision; fully multi-coated and achromatic optical glass brings you clearer and sharper vision in astronomical observation and astrophotography;
• Compatible with guide cameras; the 1.25-inch and M42 threaded interface is compatible with SV305 Pro and Orion ZWO QHY and so on auto guiding cameras; guidescope with two T2 extension tubes can assist focusing;
• Front focuser with scale; it is convenient to mark the focus position to improve the efficiency of Repeating focusing; Locking ring can ensure that the focus position does not change during use;
• Six-point guide ring; the angle-adjustable six-point fixation method can adjust the coaxiality of the guide scope and the main telescope according to the needs.

Reviews by@TheNarrowbandChannel

• SV405CC cooled color astronomy camera for deep sky astrophotography. The deep space shooting targets are mainly nebula, galaxies, star clusters, multiple stars, etc;
• IMX294 color CMOS sensor; The IMX294 sensor adopts the 4/3 format and provides the necessary number of pixels for true 4k output at 120 frames per second;
• USB 3.0 high-speed interface; The bandwidth of up to 5GB allows the camera to run at 19 frames per second in raw8 mode and 16 frames per second in raw16 mode at full resolution of 11.7 million pixels;
• Cooling System; Thanks to the two-stage tec cooling, the camera can lower the CMOS sensor temperature to 86°F below ambient temperature, which can greatly reduce dark current generation and sensor noise even during longer exposure times;
• Support system; Compatible with Windows, Linux, Mac OS, Chrome OS and Raspberry Pi systems by running AstroDMx Capture. For Windows system. Also support Sharpcap, N.I.N.A., TheSkyX and other softwares run through ASCOM platform by using ASCOM driver;
• The Bayer pattern of the SV405CC is GRBG

• The SHO filter 5nm 2 inch is highly transparent, allowing the emission spectrum of the nebula to collect as much energy as possible by accumulating exposure. There is higher contrast and the level of the nebula is richer and more delicate.
• This filter set is not suitable for telescopes with a focal ratio below F/5;
• 2 inch mounted; The filter can thread directly into the 2 inch barrel of your telescope eyepiece.

Unboxing Video     SHO Filters Reviews by @CuivTheLazyGeek

Top New Year Gift Ideas: Perfect Presents for Everyone!

• Compatible with mainstream auto guiding cameras; 1.25in and M42 mount interface designed for compatible with SV305 Pro and for Orion ZWO QHY and so on auto guiding cameras(Some camera models require additional accessories to assist in focusing)
• Sharp image; Ultra wide band fully multilayer coated lens; double glass and the 30mm achromatic optics prevent irritating reflections can bring you bright and clear images
• 45mm helical focus stroke; Allows easy and precise focus adjustments and f4 aperture optics provides a very wide field of view which will help to quickly find the target when performing astronomical observations
• Nylon-tipped thumbscrews; Comes with the mounting rings with plastic tipped screws as not to scratch the scope tube and it can be moved to any position
• Quality craftsmanship; By using high-level CNC metal processing technology; SV165 guide scope has exquisite appearance; delicate feel and beautiful shape; fine workmanship bringing you visual enjoyment

• Global shutter; SC432M telescope camera is a global shutter camera; features a 120 high frame rate per second;
• Large pixels; SC432M camera pixel is 9μm x 9μm; with its high sensitivity; images with finer colors and subtler details are possible; 
• 1.1" frame; SC432M astrophotography camera has a 1.1" large format; a larger field of view; and a larger area than currently recognized planetary cameras; provide clear imaging details; reducing the number of post-processed images;
• Fan cooling; connected to an external 5V1A power supply; type-C power supply; which can lower the camera temperature by 5-10 degrees; long exposure reduces noise and ensures the quality of the picture;
• HCG; turn on HCG mode when the gain value is 140; the readout noise can be greatly reduced and high dynamic range is retained; avoid celestial tailing and increase celestial details.

The SV503 series includes SV503 102ED telescope refractor OTA and SV193 0.8x flattener & focal reducer. It is suitable for visual observation and deep-sky photography.

The SV503 series includes SV503 80ED telescope refractor OTA and SV193 0.8x flattener & focal reducer. It is suitable for visual observation and deep-sky photography.

This SV220 Dual-Band Telescope Filter 2 inches - SV226 Filter Drawer Combination is best for deep space astrophotography.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

• Double pair of magnets; SV226 photographic filters drawer compared with traditional screw rotation; magnet has stronger adsorption force; which is convenient for you to install and use
• Two filter holders; compatible with 1.25-inch and 2-inch filters; plug and play; reducing repeated installations in dark environments
• Locking function; lock screw can adjust the tension to eliminate the gap; solve the light leaking issue under long exposure; which is a double insurance for you
• M42-M48 adapter; camera side thread is male; filter mounts thread is female; you can use the adapter to coonect cameras of different specifications
• CNC integrated molding; more precise production process; strong and sturdy; you can use filter drawer with confidence

• Universal lens warmer. Lens Warmer prevents telescope camera lens from fogging dew by warming up the lens on a camera or telescope. It also warming up water bottle and use as a knee strap;
• USB port design, 1.8m usb cable length. You can connect it your power bank or any other power source with a USB port. 1.9A to 2.0A input current, 5V input voltage;
• Temperature regulator adjustable. Strong medium weak heating modes that you can adjust the temperature according to your requirements;
• Design for telescope. 50mm bandwidth does not affect the focusing and no dark angle of the field of view, fit lens outer diameter below 127mm;
• Heating fast and evenly. Built in aluminum make heating evenly. Alloy fiber heating wire provides super fast. Three layer insulation material to reduce heat dissipation.

• Universal lens warmer. Lens Warmer prevents telescope camera lens from fogging dew by warming up the lens on a camera or telescope. It also warming up water bottle and use as a knee strap;
• USB port design, 1.8m usb cable length. You can connect it your power bank or any other power source with a USB port. 1.9A to 2.0A input current, 5V input voltage;
• Temperature regulator adjustable. Strong medium weak heating modes that you can adjust the temperature according to your requirements;
• Design for telescope. 50mm bandwidth does not affect the focusing and no dark angle of the field of view, fit lens outer diameter below 127mm;
• Heating fast and evenly. Built in aluminum make heating evenly. Alloy fiber heating wire provides super fast. Three layer insulation material to reduce heat dissipation.

Set Includes:

• SV215 Clickstop Zoom Eyepiece 1.25 inch 3-8mm, SKU: W9166A
• SV182 6x30 Right-Angle Finder Scope, SKU: W9141B
• SV188P 90 Degree Dielectric Mirror Diagonal, SKU: F9171B

• SV406P 20-60×80 ED spotting scope fetures with sharp and crisp imaging, suitable for nature observation and archery;
• SC001 WIFI camera - easy imaging on the mobile phone screen with mobile phone fingertips, long battery life;
• SA402 hydraulic portable and stable tripod, highly recommended.

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The product corresponding to the SKU is as follows:

• SV406P 20-60X80 ED Spotting Scope, SKU: F9355B
• SA205 10x42 ED Flat-field Binoculars, SKU: F9389B
• SA205 8x42 ED Flat-field Binoculars, SKU: F9389A
• SC311 WIFI Camera, SKU: F9384A
• SA206 Night Vision Goggles, SKU: F9394A

Note: SV406P comes with an eyepiece

The product corresponding to the SKU is as follows:

• SV406P 20-60X80 ED Spotting Scope, SKU: F9355B
• SV123 Spotting Scope Camera Adapter, SKU: F9194A
• SV195 Adapter for Canon Cameras, SKU: W2054A
• SV194 Adapter for Nikon Camera, SKU: W1077A
• SV196 Adapter for Sony Cameras, SKU: W9153A

Note: SV406P comes with an eyepiece

Learn more about how to connect SV406P with 1.25-inch astronomical eyepieces

• Extra-Low Dispersion ED Glass reduces chromatic aberration which causes color fringing and produces a cleaner and brighter image;
• Large field of view; 42mm objective lens provides a field of view at 394ft/1000yards;
• IPX7 waterproof through nitrogen-filled internals to handle the most extreme weather conditions; ensuring you can watch uninterrupted views;
• Premium coatings provide a high light transmittance across the entire visible light spectrum; guarantee a bright; sharp image even in twilight conditions by maximizing transmission of fading light;
• High-quality Magnesium alloy body allows a long term use;
• Large central focusing wheel for easy focusing; easy to operate; just turn the focusing knob to get clear and sharp images;
• Diopter adjustment; eyepiece built-in diopter adjustment lens; can adjust the visual balance of both eyes; easy to observe the target.

• Correct chromatic aberration; SV231 telescope filter prevents unwanted color banding in the blue spectral range; minimizes blue wavelengths in out-of-focus areas;
• OD＞4; the higher the filter cut-off depth; the smaller the noise and the higher the imaging contrast;
• Full thread design; M48x0.75 specification; male thread; thread is not easy to wear; you can overlay other filter to use;
• AR anti-reflection coating design; transmittance exceeds 95%; improves the contrast and clarity of fast achromatic telescopes, ensures image quality and brightness; obtains more observable light;
• Good performance coating; telescope color correction filter has plasma-enhanced dielectric coatings result in hard; scratch-resistant and waterproof filters;
• 300-1200/NM wavelength; blocking light damage and eliminating blue and purple streaks.

• Dual ED objective lens (4 pieces/4 group) ultra-low dispersion optical glass that significantly reduces chromatic aberration; the ed spotting scope presents clear images with good color correction; and enjoy lifelike colors and contrast;
• 100mm large-aperture; improved light collection capabilities; provides wide field of view and support for long-distance observation; allow the spotting scope to display a bright field of view;
• Detachable eyepiece; SA401 spotting scope can be freely combined to achieve a variety of observation methods; and can be compatible with SC001 WIFI camera to download and share photos in real time;
• APO apochromatic; increase the clarity and color restoration of the image; eliminate chromatic aberration for a variety of colors, and make the imaging effect sharp and clear;
• Smooth focus wheel; the scope can accurately capture fast-moving birds; easily adjust the focus; achieve high-speed focusing; and capture moving birds;
• Standard thread interface; use the universal standard ¼-20 tapped hole; 
• Waterproof and fogproof; spotting scope with built-in shading protects the objective from raindrops and snow; avoids sudden environmental changes to damage.

• Extra-Low Dispersion ED Glass reduces chromatic aberration which causes color fringing and produces a cleaner and brighter image;
• Large field of view; 42mm objective lens provides a field of view at 394ft/1000yards;
• IPX7 waterproof through nitrogen-filled internals to handle the most extreme weather conditions; ensuring you can watch uninterrupted views;
• Premium coatings provide a high light transmittance across the entire visible light spectrum; guarantee a bright; sharp image even in twilight conditions by maximizing transmission of fading light;
• High-quality Magnesium alloy body allows a long term use;
• Large central focusing wheel for easy focusing; easy to operate; just turn the focusing knob to get clear and sharp images;
• Diopter adjustment; eyepiece built-in diopter adjustment lens; can adjust the visual balance of both eyes; easy to observe the target.

• Flat field correction; this design solves the problems of edge blur; distortion; field curvature; and chromatic aberration; bringing a more comfortable birding experience;
• ED glass with excellent resolution; the binoculars for adults greatly eliminates chromatic aberration; highly restores real scenery; and makes the picture sharp and clear;
• FMC coating; improve light transmittance; reduce light loss; allowing you to obtain clearer and brighter images and provide a better observation experience;
• Magnesium alloy mirror body; the ED binoculars is light weight and corrosion resistant; superior to other materials and long use time;
• Large eyepieces; SA205 binoculars have strong light gathering ability; providing more realistic colors; a wider area of the sky can be seen simultaneously;
• Diopter adjustment; adjust visual balance for easier observation and convenient for people with myopia or presbyopia to see the effect directly without wearing glasses;
• Anti-slip focusing wheel; smooth focusing handwheel ensures accurate and stable focusing with one hand; fast focus and easy to operate.

The product corresponding to the SKU is as follows:

• SA401 25-75X100 APO Spotting Scope, SKU: F9375B
• SC311 WIFI Camera IMX662 , SKU: F9384A
• SA406 1.25inch adapter, SKU: W9170A

Note: SA401 comes with an eyepiece

• Double pair of magnets; SV226 photographic filters drawer compared with traditional screw rotation; magnet has stronger adsorption force; which is convenient for you to install and use
• Two filter holders; compatible with 1.25-inch and 2-inch filters; plug and play; reducing repeated installations in dark environments
• Locking function; lock screw can adjust the tension to eliminate the gap; solve the light leaking issue under long exposure; which is a double insurance for you
• M42-M48 adapter; camera side thread is male; filter mounts thread is female; you can use the adapter to coonect cameras of different specifications
• CNC integrated molding; more precise production process; strong and sturdy; you can use filter drawer with confidence
• Filter drawer thickness; the thickness is related to back focal length; back intercept affects the quality of imaging; it limits the use of accessories and optical path length
• Use with telescope; connect the telescope to the focal reducer and drawer filter; then connect the adapter to the camera

• APO and Double ED glasses reduce the chromatic aberration, which gives a bright image;
• The central focus ring allows spotting aims clearly at a fast speed;
• Fully multi-coated and K9 and Porro prism allows more light transmission;
• 45°design is an ergonomic proportion and suitable for eyes observing or capturing;
• IPX6 waterproof and anti-fog.

Note:SA401 comes with an eyepiece

• The SV227 SII filter blocks infrared wavelengths from 700nm to 1000nm so you don't need a separate IR-Cut filter;
• 2 inch mounted; the filter can thread directly into the 2 inch barrel of your telescope eyepiece;
• 300-1000nm wavelength range; the SVBONY SII 5nm 2" Filter transmits a 5nm bandwidth of light that is centered at 672nm;
• This SII narrow band filter reduces other transmissions; including wavelengths of light that are responsible for light pollution;
• The narrow bandwidth and high transmission rate of this filter will make you experience a major boost to contrast.

Note: This OIII filter is NOT for use on the Sun, and is also unsuitable for telescopes with a focal ratio below f/4