• 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

• The SV905C guiding camera and SV165 mini 30mm/120mm F4 guide scope is a cost-effective and practical guiding system;
• Compact and highly sensitive 1.23-megapixel color camera with 1/3” CMOS 1280x960 sensor perfect for autoguiding or planetary imaging; small 3.75-micron pixels; high peak QE of 80% and low read noise allows tight tracking of faint guide stars;
• Sharp image; Ultra wide band fully multilayer coated lens; doublet glass and the 30mm achromatic optics prevent irritating reflections can bring you bright and clear images.

• 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

SV305C 1.25'' 2MP electronic eyepiece and SV165 60mm finder scope.

The popular SV503 series includes SV503 102ED refractor OTA, SV193 0.8x field flattener & focal reducer, SV165 mini guide scope, the side dovetail slot, the SV226 filter drawer and SV211 red handle bar. This bundle set will provide the best optical quality, whether you use it for Deep-Sky Object or Planets, visual or photography.

• The popular SV503 80ED F7 telescope refractor will provide the best optical quality, whether you use it for deep-Sky objects or planets, visual or photography.
• The compatible SV193 0.8x field flattener & focal reducer will increase the field of view and improve the image flatness， which is essential for deep-sky photography.
• The SV165 30mm F4 guide scope is very mini and easy to use, widely used in different Astro-observations.
• The side dovetail slot provides you with an easy way to install the finder. 

Photography Set Includes:

• SV550 80APO OTA, SKU: F9381A
• SV705C Color Planetary Camera, SKU: F9198J
• SV165 30mm Guide Scope, SKU: W9125A
• SV209 1.0x Field Flattener/Focal Reducer, SKU: W9161A
• SV210 M63 CAA 360 Degree Rotator Camera Angle Adjuster, SKU: W9162A
• SV133 Filters Wheel 1.25inch Multiple 5-Position, SKU: W9103A

• Unlock the full potential of your telescope equipment for deep space photography with our versatile and multifunctional accessories;
• Introducing the SV165 30mm f/4 guiding scope, SV905C cmos guiding camera,  SV193 0.8x filed flattener & focal reducer;
• You can choose whatever you like.                                     

• Unlock the full potential of your telescope equipment for deep space photography with our versatile and multifunctional accessories!
• Introducing the SV550 122 Bundle, it includes SV550 122 APO telescope OTA, SV106 60mm guiding scope, SV305Pro 2MP USB3.0 guiding camera, SV209 0.8x filed flattener & focal reducer,  dew heater strip, SV211 handle bar.
• The SV550 80 bundle, it includes SV550 80 APO telescope OTA, SV209 1.0x filed flattener & focal reducer,  SV172 dew heater strip, SV211 handle bar,  SV165 guiding scope, SV905C guider camera, SV210 CAA Rotator and a bahtinov mask.     

Unboxing Video

The SVBONY Helical Focuser allows for precise focusing of eyepieces or cameras. It is ideal in connection with a guide scope and a guide-camera. such as SV165 series mini guide scope. The focuser features a female T2-thread on the telescope side, while allowing the attachments of 1.25" equipment on the eyepiece / camera side. In addition, there is a male T2 thread on the camera side. During focusing, the attached accessories keep their orientation and don't rotate. The exact focus position can be fixed with a clamp screw.

• 50mm Aperture; SV198 is convenient for astronomers to find a target in the sky, by improving light-gathering capability, resolution, contrast, and overall usability;
• Position Clamp Screw; The 3 screws on the clamping ring ensure stable, shake-free equipment, easy angle fine-tuning, making it perfect for astronomy and photography;
• 12mm Fine Focusing; Guide scope with a millimeter scale and 12mm focal path enhances the overall effectiveness and accuracy of astronomical observations by providing clearer images, accurate targeting, and improved optical quality; 
• 45mm T2-Extension Tube; Design with thread M42*0.75; eliminates a range of focusing problems;Tube rings with Vixen compatible dovetail;
• Wide Compatibility; With an extension tube, the SV198 guide scope is compatible with SV905C guide cameras, as well as a star finder when adding to an standard eyepiece. 

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• Versatile 60mm aperture Guide Scope with a built-in helical focuser for precise focusing of potential guide stars; will help guide you to capturing higher quality astrophotos;an ideal addition to any astrophotographers collection of gear;
• The helical focuser simply moves the attached device inwards or outwards while maintaining its orientation;this convenient feature means your field of potential guide stars will not rotate as focus is adjusted, further increasing ease of use;
• For those nights when you don't plan to capture astrophotos exposures, this versatile Guide Scope can double as a straight-through finder scope with an optional 1.25" eyepiece installed;
• The focuser boasts 8 mm of precise helical focus travel;plus telescoping drawtube housing provides up to 35mm of additional back-travel if needed for your particular autoguider device; No extension tubes necessary; a compression ring fitting keeps any inserted autoguider cameras or eyepieces free of pesky scratches;
• The Multi-Use Guide Scope with Helical Focuser also features male T-threads on the focuser collar for secure threaded attachment of guide cameras equipped with female T-threads.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

This sv503 set connected for prime focus astrophotography, can give you more playing methods.

SV503 prime focus photography, also known as direct focus photography, is a method of directly using the telescope to take pictures without adding any optical objects between the telescope and the camera. The main objects of prime focus photography are nebulae, clusters and galaxies.This can be achieved by matching the SV503 set with the M42 camera ring.