The value must have 2x barlow lens doubles the magnification of any 1.25 inch eyepiece;double the capacity of an existing set eyepieces at the cost of a single eyepiece | SVBONY barlow lens provide a high power magnification allow you look more closely and more detailed at the moon's surface and other planet | 2 element one group broadband green film multi coated optical glass;the housing is blackened to maximize image contrast;both that gets high quality observation without additional chromatic aberration;make image more crisp and sharp | Quality aluminum stock and black anodized body with M42x0.75mm thread;work as a t adapter;connect DSLR or SLR camera to telescope easily via a separate sale t ring adapter | Connect DSLR SLR camera to telescope easily;the T ring adapter you buy separately depending on the model of camera

1.25" 2x Barlow lens fully multi coated metal with M42x0.75 thread camera connect interface for telescope eyepieces | Barlow lens 2x double the capacity of an existing set eyepiece;give a big magnification boost to any 1.25" eyepiece it's used with | The housing is precision machined from aluminum stock and black anodized to a hard finish | The lens edges and inner barrel is blackened to provide maximum contrast;chromatic corrected;provide high transmittance;ensure clear and sharp images | Male T-thread on its back that can attach DSLR camera and other T thread type accessories;it accepts 1.25" filters;just remove the optical glass part and add the filter on if need

Focal length;0.16" 4mm;offer high magnifications;look more closely and more detailed at the moon's surface and other planet;perfect for viewing the moon and planets | Standard 1.25’’ 31.75mm fitting diameter;can be used in any astronomical telescope with a 1.25" focuser;Perfect for broad field lunar observations; medium sized star clusters;and a wide range of cloudy nebulas and deep sky targets | Fully coated optics glass eyepieces for excellent image contrast and light transmission;give maximum detail and definition across the entire field of view;highly achromatic;planetary filters enhance details on Jupiter;Saturn;Mars and Venus | 4mm lens only weighs 0.09lb; For lenses with the same refractive index; the 62 degree aspheric eyepiece is thinner and lighter than the spherical eyepiece;designed primarily for planetary observation;perfect for deep sky objects | Wide angle; 4mm 62 degree aspheric eyepiece can get maximum detail and definition across the entire field of view; Anti-lost design; Eyepiece interface recess portion can prevent the loss;Applicable;watch the scenery;bright celestial observations; nebula and so on

Designed for Canon EOS and Rebel SLR and DSLR Cameras and Photography;Note:it doesn't fit for EOS-M models;connect camera to telescope for direct prime focus photography convenient and easily | Super easy to use;eyepiece put into the extended cylinder;then screw t adapter and t ring adapter and extended cylinder together;then attach camera to telescope;fit for Canon EOS only | Connect the T-ring mount and T-Mount by M42 threads;extended cylinder length 68mm;fit many eyepiece;It can adjust eyepiece location;help you to get more sharp image | High quality aluminum materials;fit any 1.25" diameter eyepiece holder telescope and microscope;one time purchase for long term use | The SVBONY telescope camera adapter help you keep the beautiful and interesting view of your telescope or microscope

12.5mm Plossl eyepiece with red LED illuminated double line crosshair reticle;it's idea for measuring double star angular separations;position angles;planetary diameters and lunar crater diameters | Steplessly adjust the brightness of dual crosshair reticle;rotate switch on the side to put it on;shut it off and adjust the brightness | Multi-coated 4-elements Plossl design for excellent color correction and sharpness;it also offers excellent light transmission and sharp imaging on faint stars | Wider view angle and bright high contrast views;40 degree apparent field of view with 11 mm comfortable eye relief;It's a great Halloween birthday christmas gift | Standard 1.25" eyepiece;suitable for any standard 1.25" telescope filters and other astronomical devices

SV10 lightweight binocular suitable for adults and children;8x25mm small Binoculars is a professional roof prism binoculars; with 10x high power magnification and ultra-wide field of view 378ft@1000yds/126m@1000m | SV10 fixed focus binocular;Never needs focusing;fixed-focus binoculars no focus adjustment needed;dials in focus at any distance automatically;Designed for sporting events and nature ob

Plug and play ;windows system needs to download Sharpcap Capture; Linux system needs to download AstroDMx Capture; Mac system needs to download oaCapture; Android system needs to download USB Camera. real time dynamic observation by crystal clear image | Dark light compensation technology;greatly improve the camera's image clarity in low light conditions | Record 2K video at high speed;up to 30 frames per second at 1920x1080 resolution | Great for lunar and planetary shots;share the view of bright planets;the Moon and terrestrial targets;not suitable for deep space imaging | It can connect a 1.25 inch filter and the filter thread is M28.5x0.6;the new SV105 adds filter threads and dust shims

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;For example, inserting a 25 mm eyepiece creates a 9.6x60 finder scope, or you can insert one Illuminated Centering Eyepieces for use as a finder with illuminated crosshairs for easy aiming | 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

Powerful Telescope Accessories; SV118 1.25" 2x achromatic Barlow lens effectively doubles the magnification of each eyepiece | Fully Multi coated lens; SV118 barlow lens uses two element fully multi coated for excellent transmission and the internal housing is baffled to eliminate unwanted reflections and increase contrast | Compact barlow lens; SV118 barlow lens just 2.5 inches long; Easy to stash in your accessory case | Important role; The Barlow lens’ role is not only to improve the image quality; But also viewing comfortably | SV118 2X barlow lens provide a high power magnification allow you look more closely and more detailed at the moon's surface and other planet;It's a great Halloween birthday christmas gift

SV133 is ideally suitable for visual observations with 1.25" eyepieces; And with the included T2 adapter it is also perfectly suitable for astrophotography with single lens reflex cameras and CCD cameras; The included T2 adapter comes with a locking ring; whereby high-precision distance regulation becomes possible | This 1.25" filter wheel lets you use up to 5 different filters and change them within just a few seconds;Filter positions indicated by the numbers 1-5;simply note the reference number of each filter during installation;then rotate the knurled wheel until the desired number is displayed in the small notch in the filter wheel housing | It’s very sturdy aluminum housing makes it also suitable for heavy cameras; The filters can be changed very quickly at any time; even with the camera mounted or with the eyepiece inserted;With 42mm metal dust cap, you can also leave your filters mounted in the filter wheel;as they are optimally protected from dust and damage there | The robustly constructed filter wheel is supplied with a 1.25" eyepiece adaptor; 1.25" focuser nosepiece;T-2 camera adaptor and locking ring;allowing you to quickly and easily attach it to your focuser;The very short design also permits the use of devices with short back focus such as Newton or Dobson telescopes | The filter wheel interior is absolutely light-tight - allowing you to image without any reflections or stray light;It's construction is impermeable to light and thus ensures reflection-free astrophotography

Provides comfortable viewing;Using the 2x barlow lens with a longer focal length eyepiece lets you achieve the same high magnification view; but in most cases the eye lens will be much larger; helping to reduce eye strain and improve comfort | Quality aluminum stock and black anodized body; Precision machined;sturdy for a long term use | Full bandwidth multi-coated lens;Ensure that the incoming light transmission rate is as high as 97% so that you can more easily see clear and bright images | Brass ring design;The built-in brass pressure ring on the eyepiece insertion end ensures that the inserted high-end eyepiece lens body surface is not accidentally scratched | Well-made 2x barlow lens black tube flocking matt inside;all metal fixing screws;non-slip shell design;The overall appearance is beautiful and upscale

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; Black paint on the edge of the lens; 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

6.25% Transmission DN filter;ND16 filter transmits only 6.25% of the incoming light; help reduce radiation; reduce deformation between light and dark areas at the edge of the moon; Help you watch the moon comfortably;Let you achieve a sharper image directly | Suitable for watching three-quarter moon ;The 1.25" Neutral Density Moon filter can reduce the amount of light reaching the film without affecting the color; and reduces glare so you can see more lunar detail and surface features with your telescope | Help protect dark-adapted vision;When observing the three-quarter moon; most of the moon's circular surface is bright; At this time; direct observation is likely to damage the eyes; ND16 filter transmits only 6.25% of the incoming light;Can protect your eyes | Durable Material; The included filters are made of HD optical glass; can guarantee a good light transmittance; Aluminum alloy frame sealing ring for better tightness and avoiding fall or loose | Applicable standard 1.25 inch; Metal filter cell threads directly into the 1.25 inch barrel of your telescope eyepiece; Useful for different caliber astronomical telescopes through which the light of the Moon can be extremely overwhelming

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; doublet glass and the 30mm achromatic optics prevent irritating reflections can bring you bright and clear images | 45mm back focus distance; 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

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; 480mm band length 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

BSI CMOS Sensor; This telescope camera uses an extremely sensitive back-illuminated CMOS sensor; IMX290 sensor has very high QE and very low (0.7e-) read noise; which improved sensitivity in the visible-light and near infrared light regions for industrial applications | 128MB DDR Buffer;The benefit of the image buffer is that the memory will cache the image and transfer it to the computer when the USB interface is not busy or being interrupted;and the frame will not be lost or corrupted | Any Area ROI Support;The SV305 astronomy camera has ROI function; A smaller region of interest (ROI) is read out from the sensor; leaving the image scale of the object being imaged unchanged; Allow arbitrary resolutions to be set | SV305 camera support Windows system; Linux system; Mac OS system; and Raspberry Pi system; Windows Driver 1.3.7 version; Support ASCOM driver; PHD2 Guiding Software; Not support Phone system | Long exposure can reach 30 minutes;high-speed;medium-speed;low-speed three output frame speeds are optional;matching different computer hardware to achieve a more suitable reception speed of the hardware. Meet the basic needs of astronomy enthusiasts for planetary photography

Designed for Nikon SLR DSLR camera digiscoping;connect camera to telescope for direct prime focus photography convenient and easily | Super easy to use;thread t adapter into t ring adapter;then thread the whole mount adapter into DSLR SLR to connect to telescope | Universal t adapter fits all standard 1.25" diameter telescope or microscope etc; t ring adapter fit for any standard Nikon lens | Great quality metal materials and tight;non binding fit;one time purchase for long term use | Connect camera to telescope for direct prime focus photography convenient and easily

Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners | The required spacing can be achieved by combining several extenders of differing lengths;you can use 1 piece;2 pieces;3 pieces of the extension rings as you like | Male thread M42*0.75;Female thread M42*0.7;eliminates a range of focusing problems | The extension tube has a T2 interior thread and a T2 exterior thread for elegantly solving spacing problems in astrophotography | All metal construction and anodizing aluminium process;durable for long time use

Fully multi coated broadband green optics with superior optical performance;clarity is great and the magnification is truly represented | 66 degree AFOV perfects for broad field lunar observations;medium sized star clusters;wide range of cloudy nebulas and deep sky targets with extra sharpness | Multi group lens combination to improve optical performance;the eyepieces sets delivers sharp images with good color correction and contrast | Edge blackened optics;internally blackened to eliminate light scattering;minimize internal reflection and maximize contrast | Aluminum 1.25" eyepiece barrel is internally blackened to eliminate light scattering and is threaded to accept 1.25" filters

1.25" 6.3mm 32mm 40mm Plossl eyepiece set give you a good variation in magnification for a wide range of targets with extra sharpness and long eye relief | 2x Barlow lens doubles the magnification of any 1.25" existing set eyepiece;features T threads to attach a camera to your telescope with optional T ring | Lens edges is blackened to reduce scattering of stray light and maximize contrast;designed to enhance the functionality and pleasure of using your telescope | 4 element Plossl design;perfect for broad field lunar observations;medium sized star clusters;wide range of cloudy nebulas and deep sky targets | Soft rubber eye guard that's custom fitted with a bayonet mount and brings convenience to glasses wearers;It's a great birthday christmas gift

7pcs filters set include most popular color planetary and moon telescope eyepiece filters;moon filter;CPL filter;5 color filters with 23A bright red;21 orange;12 yellow;56 bright green;82A bright blue | CPL filter is mainly used for elimination of polarized;and enhances the contrast of the moon and planets in photographic images | 5 color filters are an essential tool of the lunar and planetary;with red;green;blue;orange and yellow highlight features on Mars;Jupiter;and Saturn | High quality aluminum alloy frame and optical glass with standard 1.25” filter threads suitable for 1.25” eyepieces and other accessories | Moon and skyglow filter;Cuts down glare and brings out much more surface detail and gives you better contrast; It is a multi-band pass filter transmitting a high percentage of light in the visual spectrum; Effectively filters out selective wavelengths of low-pressure sodium and other man-made sources typically used in street lighting

The UV-IR-Cut filter uses the very latest coating technology; to deliver the finest filtration qualit-and lifetime durability used to cut off filter blocks undesirable ultraviolet and infrared rays that may interfere with obtaining the high contrast and high quality images possible with a digital sensor | True optical quality glass substrate and coatings;to deliver the sharpest images possible;can achieves greater detail;less chromatic aberration;more natural colors and finer color gradation | Very low reflection multi-coating; Striate-free; and plane-parallel substrate; It serves as a permanent lens protector;digital imaging with DSLR cameras;CCD cameras;and modified WebCams;or telescope | Standard 2inch Filter threads for 2" eyepieces and other accessories;combine with any standard 2” filter threads for 2" eyepieces and other accessories to deliver the sharpest images possible;reducing ghost images caused by IR radiation | Comes with a plastic box to keep it safe and clean when not in use

62 degree apparent field of view; Super wide angle 62 degree apparent field of view and available in 1.25" 10mm formats to cover a wide range of magnifications and true fields of view | HD eyepiece; The eyepiece of high-definition; It can increase the magnification of the telescope combination | Standard 1.25" fitting diameter; Compatible with any telescope that accepts 1.25” eyepieces | High Performance; Sharp optimal performance with low chromatic aberration; Make you get a virtually distortion free image | Light in weight for their size; making for easier scope balancing; The optical quality is very good.; The view is crystal clear and no apparent distortion

Fully multi coated lens;all fully multi-coated for maximum contrast and resolution | Super wide 68 degree view;greatly expanded our scope's capabilities | Black anodized aluminum housings;internally blackened to eliminate light scattering and contrast | Fold down soft rubber eye guard;block stray light also bring the convenience to eyeglass wearers | Nicely packed with protected caps both for top and bottom of the lenses;It's a great Halloween birthday christmas gift

Aluminum 1.25" eyepiece barrel is internally blackened to eliminate light scattering | Fully multi coated lens;all fully multi-coated for maximum contrast and resolution | Super wide 68 degree view;greatly expanded our scope's capabilities | Black anodized aluminum housings;internally blackened to eliminate light scattering and contrast | Standard 1.25" Filter; M26.5*0.6 Thread;It's a great Halloween birthday christmas gift

55 to 100mm has been tested fits for iphone;iphone 5;5s;6;6 plus;7;7plus;Sony;Sony Xperia Z;Samsung Note;Samsung Galaxy S7;Galaxy 7;Galaxy 5;Galaxy Note 5;Samsung Note 4;ECT;Moto G5+ and many other brands | Fits eyepiece diameter from 25 to 48mm and 1.25" telescope;not fit 2" eyepieces;compatible with microscope;telescope;binoculars;monocular;spotting scope;night vision monocular and most optical device | Aluminum alloy shell;sturdy durable and lightweight;the phone clamp made of high strength PA plastic and features adjustable locking mechanism with a steel bolt not a spring | Works great for the phone in the up and down position taking pictures and recording sideways or in distant;keys capture the best videos of world successfully is practice and patience | SVBONY phone clamping features adjustable locking mechanism with a steel bolt (not a spring); Phone is protected by High density EVA pads

The SVBONY 1.25" UV/IR CUT filter infra-red filter CCD camera interference UV Filter is a better choice for the digital cameras;DSLR camera;CCD camera;modified WebCams;or telescope | Very low reflection multi-coating;striate-free;and plane-parallel substrate;combine with any of the other Baader filters;to deliver the sharpest images possible | Compatible list Philips SPC900NC;SPC890NC;ToUcam Pro II 840k; Philips ToUcam Pro 740K;Creative Webcam Pro EX;Creative Webcam Pro NX | Standard 1.25" filter threads;the 1.25" UV/IR CUT filter;Webcam adapter with built-in filter thread for 1.25" eyepieces and other accessories | Webcam Adapter for telescope 1.25" thread;male 12mm;standard 1.25" telescope eyepiece port;adapter with built-in filter thread

SVBONY Bahtinov Mask's effect; Perfect focusing for your CCD DSLR or Webcam in seconds; The great focus for your telescope quickly and easily | Hard aluminum alloy; SVBONY Bahtinov Mask is made of aluminum alloy; not plastic; And it has whole anodizing aluminium process | With 3 fixing screws;Masks now feature 3 holes which can be attached with 3 screws to prevent the mask from falling all the way to the ground;They have non-scratching silicon sleeves to protect you valued telescope surface | Ultra thin; SVBONY Bahtinov Mask is Light weight so you wont upset the balance on your scope | Suitable for telescopes front end diameter 175mm to 220mm; Universal adaptation; 3 bolts with plastic cover allow the mask to be simply attached to any telescope

This dovetail mounting plates provide a platform for coupling telescope optical tubes to equatorial mounts;it compatible with finderscope;finderscope anchor ear and equatorial instrument | Attach all manner of accessories including telescope tube rings and astrophotography cameras equipped with a tripod socket | Dovetail plates is made of extruded;anodized aluminum; aluminum alloy is used to ensure a light weight but super high strength support | Aluminum anodized surface treatment assures years of corrosion and abrasion-resistant operation;210mm dual dovetails nodal slide vertical rail along the length makes the mount equipment right where you need it | 1/4 standard screw thread add the threaded holes for connect other accessories;quickly switch from tripod to other usage scenarios

Fully metal construction;the dovetail base is made from black anodized solid aluminum | It’s easy and quick to release mounting dovetail board by dovetail clamp to attach to the telescope body | Applicated to finder scope;red-dot reflex sights;green laser pointer brackets; mini guide scopes and so on | Attach finder scopes or other aiming devices to your telescope quickly and easily;by dovetail clamp | Suitable for most telescope;refractor; reflector or sct maksutov;great for both visual observers and astrophotographers

Using a rock-steady tripod mount will allow you to be glassing or watching wildlife for long hours;this tripod mount for binoculars as they have just a bit too much magnification to hold steady | Versatile fully metal SV110 adapter allows attachment of porro-prism binoculars to a tripod;the super large screw head;set up easily without tools;the tightening knob is rubberized and easy to use | Threaded adapter 1/4"-20 socket fits standard photographic and field tripod heads;fit with binoculars holder hole less than7mm/0.27inch;spacing width more than 20mm/0.78inch | Solid construction and lightweight; weight just 3.15oz adapter is lightweight for your binoculars and tripod; binoculars adapter is made of sturdy metal with powder coat finish | Attach a binocular to a standard tripod;it attaches easily enough to a 1/4" mounting point and allows hands-free operation of a standard Porro prism binocular;the mounting bolt for the binocular itself thread deeply enough into 7mm/0.27inch

Fits binoculars perfectly;connecting binoculars and tripod conveniently;very strong solid metal;the screw is durable of mounting binoculars;the screw head is large and coated with rubber | Used to mount binoculars on camera tripod;and this SV111 tripod adapter apply to Binoculars barrel spacing less than 12mm;the binoculars holder hole depth is more than 5mm;not all binoculars will have a screw mount; it will be found under a circular cover along the central eye spacing adjustment; it takes a 1/4-20 screw | Mount your binoculars to a tripod;now you can find the object and show it to others;it’s sturdy and easy to use;with the metal adapter looking at the moon or stars and planets through binoculars all is steady as a rock | The larger knob was much easier to grasp and turn to attach the adapter to the binoculars and they held the binoculars steady without any wobble;be aware don't use it with plastic tripod base;it may breaks cheap tripod base due to the combined weight | SV111 tripod adapter is more suitable to Roof prism binoculars;An elastic rubber ring is added to cushion the bracket and the double barrel connection;One-line screw that can be tightened with the aid of a tool

1.25 inch 12mm eyepiece, gives the wide viewing field along with extra sharpness | Comfortable rubber eyewear design; Includes a soft rubber eyeguard; eyeguard folds down for eyeglass wearers, make you more comfortable to watch | Matting treatment; The edges of the lens are blackened; and the internal structure of the structure is matted to eliminate stray light | Quality 12mm focal length telescope eyepiece with fully coated glass optics;It's a great birthday christmas gift | Excellent general-purpose eyepiece for observing hairline lunar and planetary detail or resolving faint nebulosity in deep-space

Meet different needs;The required spacing can be achieved by combining several extenders of differing lengths; You can use 1 piece; 2 pieces or 3 pieces of the extension rings as you like | High quality;Fully metal construction and anodizing aluminium process; durable for long time use | Use SV129 extension tube kit for getting the correct image scale or the exact spacing required for reducers or field flatteners | Male thread and female thread both are M48*0.75mm; Solving spacing problems in astrophotography and eliminates a range of focusing problems | Made of high quality aluminum alloy and durable

Dielectric coatings; super flat mirror with dielectric coatings to reduce reflected light loss; provide an over 99% reflective surface; good for astronomical viewing | 1.25 inches nosepiece fits 1.25 inches telescopes; accepts standard 1.25in filters; eyepieces; Barlow lenses and other accessories with a 1.25in insert barrel | 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

About the compatibility; for filter wheels that accept 36mm; compatible for ZWO QHY SBIG 36mm electronic filter wheel, suitable for DSLR webcam and CCD camera; use a planetary camera for planetary shooting, and a black-and-white camera for bright-field shooting | Long-lasting lifetime; made with glass; which has been multi-coated; with an ion-assisted deposition technology; to ensure scratch resistance and stability on the central wavelength | Get a sharp image; improve image sharpness with the addition of an UV-IR cut filter; which blocks ultraviolet and infrared transmissions; but lets the visible spectral region shine through | How to use it; used with color filter wheels; accept 36mm unmounted filters | With high pressure EVA case lining; comes with a plastic case; can protect the filter from scratch