• More clear image; APO astro camera lens consists of a 3-group 5-piece petzval objective lens structure; which includes a set of triplet lens; bringing you a clearer image;
• 44mm full-frame; This telephoto lens can avoid aperture blocking; whether mirrorless camera; SLR camera; or deep-sky camera; you can photograph clear image without trouble;
• Mounting kit available; SV555 astrograph is equipped with a bracket and belt for EAF; you can get an accurate angle to photograph quickly and conveniently;
• Single-speed focus; the telescope camera lens supports fine adjustment; enabling you to adjust the photography angle accurately for fast shooting;
• Various aperture range; the astronomical photography lens can adjust the aperture from F22 to F4.5; meeting a variety of use needs; the included graded adjustment ring and scale also make it convenient for photography by preventing accidental touching;
• Compatibility; SV555 telescope camera lens features an M48x0.75 filter thread to install the 2" filter; additionally; the V-style & Arca-Swiss quick-release system is compatible; flexible and easy to use; enhancing the efficiency;
• Convenient to use; the APO astro camera lens is featured with a handle; bracker; and dovetail plate; making it more convenient to use the lens when shooting.

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Get SV555 Full Review by @Cuiv, The Lazy Geek        SV555 FAQ & Test  

• Cut-off depth ≥OD4; highly efficient in blocking urban light pollution or other background light; use this multi-bandpass filter for astrophotography in urban without traveling long distances to the suburbs;
• Compatible with 99% astrophotography systems; if you have different astrophotography systems, no need to prepare dedicated filters, one SV240 can meet your needs due to its high compatibility;
• Photoing more kinds of targets; SV240 multi-narrowband filter select Ha,OIII,H-Beta wavelength effectively can cover almost photoing needs;
• High transmittance; the >90% transmittance in core wavelength of Ha,OIII, H-Beta, more objects for your astrophotography by using this multi-bandpass filter;
• Multi-bandpass filters; without multiple filters' combination for colorful images; rich color in your lens;
• Resistant of BORTLE 8; the multi-narrowband filters can be resistant from Bortle 1 to Bortle 8 cities, suitable for almost all urban;
• 300-1100 mm working wavelength; the wider coverage of this multi-narrowband filter allows it to have a strong ability to tack light pollution.

Note: Optical filters that use infrared light often cause halos in the NIR region; which are exacerbated by the halos produced by the filter itself.

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• 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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• 5-band filter captures light across a broader spectrum; Accurately reproduces the true colors of celestial objects;
• Multi-Broadband filter properly designed for starfield shooting and deep sky photography, enhance stars and celestial bodies details; making deep sky observations clearer;
• Over 90% peak transmittance;reduces light loss, boasts an SII-OIII-SII band average transmittance of over 85%; Enhances contrast between the target object and the background;
• 300-1000nm wavelength working range; multi-bandpass filter effectively combats light pollution; providing a broader coverage area;
• Max OD4 cut-off depth; astrophotography filters effectively block out unnecessary light; and provide stronger light pollution suppression.

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• Plug-and-Play & HD Image: The wireless HDMI transmitter and receiver requires no WiFi/APP/Bluetooth. Plug and play, easy to connect in 10 seconds. Say goodbye to HDMI cables. With 4K decoding, 1080P output and 60Hz high fresh rate, you can enjoy crystal clear images on larger screens;
• 0.42”OLED Color Display for Easy Control: Easily manage device operation and enjoy your audiovisual entertainment worry-free;
• 50-80m Stable Connection & Transmission: Equipped with 5G chips, this transAir provides fast, stable, and 50-80m long-distance transmission, almost no delay (<0.1s). The signal can penetrate walls or ceilings.  Stream videos smoothly with multi-channel in 5G 9 frequency bands from 5.1 to 5.8;
• Wide Compatibility: The wireless transmitter supports projecting from PC/laptop/cameras/DV/TV box(TX) to projector/monitor/HDTV(RX). Enjoy movies, photos, business report on a larger screen.

Note: This device may not be compatible with all smartphones or iPads. It is essential that your device supports HDMI transmission.

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• CNC hollow structure; SV225 altazimuth mount adopts hollow structure; reduce the weight(2.34Kg); convenient for you to carry out; light weight
• Fine adjustment shift; SV225 alt-az mount can fine-tune the telescope to meet your adjustment efficiency in different scenarios
• Variable speed gear; SV225 alt-azimuth mount is variable speed gear slow motion controls on both axes to let you smoothly follow the motion of the moon and planets
• Load capacity; with a payload capacity of 10kg; even light weight; the SV225 alt azimuth mounts will match well with the telescope; camera and so on
• Applicable scenes; SV225 alt-az mount is suitable for many senorios; like astronomical visual observation and surface observation

Get the reviews by (@BogdanDamian)

• 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

• 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

• The ultra-wide 68-degree field of view eyepiece provides a stunning observing experience;
• The eyepiece uses a fully multi-layer coated lens. Broadband green film optical glass increases light permeability for sharp images;
• The multi-element design provides sharp images, highly achromatic, with excellent color correction and contrast;
• Black anodized aluminum housing. Interior is blackened to eliminate light scatter and contrast;
• Foldable soft rubber goggles. Block stray light and also bring convenience to people who wear glasses.

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• Multiple uses; SV191 7.2-21.6mm zoom eyepiece allows you to change magnification power without swapping out eyepieces;
• 1.25 inches standard eyepiece; not only for astronomical telescopes; but also for spotting scope;
• 7-Elements 4-Groups lens structure; 7-Elements 4-groups made of high index glass deliver sharp; high contrast vistas;
• M28.5*0.6 filter threads; base of SV191 zoom lens has a threaded adapter which allows standard 1.25in filter;
• 18-20mm eye relief; twist up rubber eyecup and 18-20mm long eye relief provides comfortable long term viewing for people with or without glasses.

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Zoom Eyepiece eliminates the need to change eyepieces so you can spend more time viewing the night sky instead of fumbling in the dark when you want higher or lower magnifications.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

• Dielectric coatings; super flat mirror with dielectric coatings to reduce reflected light loss; provide an over 99% reflective surface; good for astronomical viewing;
• The 1.25-inch nosepiece fits 1.25-inch telescopes and accepts standard 1.25-inch filters, eyepieces, Barlow lenses, and similar accessories; The 2-inch nosepiece is compatible with 2-inch telescopes and accommodates standard 2-inch filters and accessories. You can choose either 1.25inch or 2inch diagonal based on your requirements;
• 90 degree viewing angle; diagonal reflects the telescope’s light path 90 degree to provide a more comfortable viewing angle; best for observing objects overhead;
• Correct upside down and left right reversed image; the view image is upright; but left and right reversed if use the 90 degrees to your telescope;
• Brass compression ring; Built in brass ring and thumbscrew accessories avoid eyepiece to rotate during adjustments; effortless fixes more firmly and will not scratch your eyepieces barrels.

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• Firm locking; SV223 diagonal mirror has a clicklock locking mechanism; just turn the clicklock to securely fix the accessory; ensuring the eyepiece is installed and used stably; not easy to fall off
• Coating: 99% Reflectivity SV223 diagonal mirror has metal high reflective dielectric coating
• Surface accuracy: 1/10λ
• High-quality machining out of the aluminum; SV223 star diagonal is composed of High-quality aluminum elements; chic; light and stable; internal antireflection baffling for highest contrast
• 90 degrees design; SV223 star diagonal has a 90 degrees refraction angle; providing a better observation experience when visually observing.

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• 50mm aperture; SV198 is convenient for astronomers to find a target in the sky; a large diameter can obtain a good view;
• Position clamp screw; easy to adjust the guide scope and astronomical tube; especially important for entry level astronomy enthusiasts;
• Optical glass; multi layer broadband anti reflection coating double glue lens; well made edge coating;
• Precise helical focusing with a millimeter scale and 12mm focal path; 
• One scope for multiple purposes; can be used as a guide star and star finder; 
• 45mm T2-Extension Tube Male thread M42*0.75; Female thread M42*0.75; eliminates a range of focusing problems;Tube rings with Vixen compatible dovetail.

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• The SC311 is designed with Sony IMX662 color CMOS sensor, which uses advanced STARVIS 2 technology. It has the characteristics of no amp glow and very low readout noise, higher sensitivity to red and near infrared(NIR) light；
• 2.4G WiFi technology let you can use 4 devices at the same time and share the fun of astronomy with your friends. Support Android and Apple systems, you can download them in the software store；
• 10M effective transmission sensing distance allows you to get rid of the shackles of the data cable, it is easier to realize the fun of astronomy observation outdoors；
• Built-in 2400mah lithium battery, it can support about 4 hours of continuous work, allowing you to have more time to focus on observations；
• Connect to our SvbonyAstro a software application designed by ourselves. You can do observation on your phone or pad and save them to the SC311 built-in TF card, and then easily share to social media.
• The SC311 camera can be connected via USB cable to a PC. You can use this camera to capture with the AstroDMx Capture program or etc. Also it complies with the standard UVC protocol and no need to install SVBONY driver.  

Reviews of SC311

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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.

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• 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.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

• 7 Level Infrared; night vision binoculars have 7-level adjustable infrared; 3W 850nm strong infrared spotlight; allowing you to easily watch animals 250m away in complete darkness;
• 4K Video & 36MP Pictures; SVBONY SA206 night vision binoculars can shoot 4K; FHD; HD videos and up to 36 million pixel photos in the day or in the night; you can easily and seamlessly shoot high-quality photos and videos in any lighting conditions;
• 3.2-inch high-definition TFT screen with 15 levels of brightness adjustment; suitable for outdoor activities such as night hunting; patrol detection; camping; wildlife observation;
• 8x digital zoom; night vision goggles can easily observe the target and find more details in a completely dark environment; supports taking pictures and recording videos; and can use TYPE-C data cable for data transmission and sharing with friends; free 32gTF card (up to 128GB);
• Rechargeable lithium battery; built-in a lithium battery of 5000mAh; allows you to run for up to 14 hours; type-c charging interface is compatible with most power banks; ensuring extended usage time.

• The SV229 is an ideal choice for viewing the sun, and it conforms the standard ISO 12312-2: 2015. You can use it with confidence;
• It can provide a clear, crisp sunspots, solar eclipses, granulation through telescopes and binoculars view while rejecting harmful ultraviolet and infrared radiation;
• The sun will appear in a natural orange color when viewed through your telescope using this Solar filter;
• SV229 solar filter is a must-have item to observe the sun without damaging your eyes - optical filter fits snugly over your telescope's aperture;

Certified by AAS (American Astronomical Society) 

Note: This solar filter is suitable for SV503 70mm f/6、SV503 80mm f/7、SV550 80mm f/6 

• The main function of ADC is to reduce the color change caused by atmospheric dispersion and improve the imaging effect of planets, especially low-altitude planets;
• A pair of prism lenses adopts double-sided coating process to reduce light loss; coating adopts anti-reflective broad-band; applicable range from 300nm to 700nm;
• Camera and eyepiece side 1.25 inches barrel with T2 male thread; adaption is simple through T2 thread and 1.25 inches barrel on camera side and 1.25 inches barrel on telescope side;
• Through the use of 2 quality minimum 1λ BK7 prisms, it corrects the false colour introduced by the earth´s atmosphere, double wedge prism with 4.5 degree declination adjustment range;
• The ADC corrects the dispersion effects of earth´s atmosphere; you will get sharper images of planets and moon; when used for planetary imaging; it changes the clarity of the image dramatically; particularly in the luminance channel when LRGB imaging;
• Ring scale for adjusting dispersion correction; less fringing; clearer planet photos and more details; the eyepiece or camera installation interface adopts coaxial locking interface ensures sufficient coaxiality;
• FMC prism lens; prism lenses employ a double-sided coating process to reduce light loss make sure the light transmission of the ADC is high.

• 4K Wireless Video Transmission System: Wireless HDMI Transmitter and Receiver HDMI IN and Loop-out resolution supports up to Full HD 4K @30Hz, provide a higher quality image;
• Long Rang, Low Latency: 1000ft reliable range for wireless video and audio transmission; 0.08S low latency for real-time monitoring that enables.This product can go through walls within a certain range,stable and reliable.Note: Walls, bricks or glass can shorten signal coverage or cause severe signal loss;
• Loop Out & IR Remote Control: ST3 wireless HDMI transmitter and receiver supports infrared remote control expansion, which supports 30KHz/38KHz/47KHz/56KHz infrared signal remote control,you can use the remote control to control the set-top box in different rooms.Additional HDMI Output on the Transmitter end allows you to add a local Display for Monitoring;
• Plug & Play: Setup is quick and easy,no software to install,eliminate cable clutter, get up and running in minutes with a true plug-and-play experience. Connect the transmitter to the HDMI source, then connect the receiver to the secondary HDTV, and you’re ready to go;
• Support Maximum 1TX to 4RXs: Our transmitter can connect up to 4 receivers simultaneously, duplicate or extend your screen so you can share one set-top box in the living room, bedroom, etc.

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• UHD video; wireless HDMI transmitter and receiver support output resolution up to UHD 4K@30Hz; which creates a seamless video ecosystem that significantly improved coordination efficiency on the filmmaking set;
• Long distance and low latency; ST1 wireless hdmi transmitter and receiver enable you to experience the stability of smooth image and audio transmission up to 984ft/300m in open environments with a latency of less than 0.06s; and high-definition stable wireless transmission solution greatly enhances the visual experience and information dissemination efficiency of church activities;
• Dual HDMI output ports and loop out; you can connect two displays at the same time on the RX via the 2 HDMI out ports; loop out feature enables you to view the content on a nearby screen while simultaneously streaming to a remote display; providing real-time oversight and flexibility in your setup;
• 1TX up to 4 RX; one transmitter supports up to four receivers; note; the transmission distance is reduced by approximately 50M for each additional receiver in an open environment; multi-channel: 5G frequency bands can be freely selected in 9 frequency bands from 5.1 to 5.8;
• 0.96'' OLED screen; the OLED screen provide easy access to the device's power status; channel scan result; video input; channel number; etc;
• APP monitoring; supports both Android and IOS system; your mobile device can also act as a receiver to view the real-time image on the device screen through the APP.

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• USB interface; plug into a USB power adapter; a portable charger; the USB cable makes lens warmer ideal for indoor and outdoor use;
• Temperature range; working temperature adjustment range from 25 degrees to 70 degrees to suit different weather environments;
• Fastener design; with handy fasteners; it can wrap around your lens or scope with security and is easy to adjust;
• 430mm effective heater length; liminate dew; fog; and condensation with our specially crafted lens warmer during cold weather photography;
• Designed with PWM Function, which can provide more accurate, energy-saving, efficient heating control, thus enhancing the performance and reliability of telescope equipments.

Note: This dew heater is suitable for SV503 70ED, SV48P, MK105, SV503 80ED, SV503 102 ED, SV550 80 APO

• • Fashion appearance;Different from the black that is common in the market;The silvery look makes the product look more stylish;The overall appearance is beautiful and upscale;
  • Brass compression ring design; A brass compression ring can protect your eyepiece from marring or scratching the barrel; Keeping your eyepiece in new looking;
  • Lens edges is blackened; The edge of the mirror is matted black; Reduce scattering of stray light and maximize contrast;
  • Non-slip rubber grip ring design; No slip prevent the barlow lens from falling off accidentally; Rubber grip ring for secure handling even in moist conditions;
  • Fully multi-coated lenses;The lens fully multi-coated provide a sharp view; Excellent optical performance with high contrast and high resolution.

Top Christmas Gift Ideas: Perfect Presents for Everyone!