Teleskoobid.ee

<p>This <strong>combination focal reducer and field corrector lens accessory</strong> works with all Celestron 5”, 8”, 9 1/4”, 11” and 14” Schmidt-Cassegrain telescopes. This clever accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality. The Reducer/Corrector is f/6.3 for C5, C8, C9¼ and C11 telescopes and f/7 for the C14 telescope.</p> <p>If offers wide fields of view with any Schmidt-Cassegrain telescope. Used for astrophotography, it reduces exposure time by a factor of 3.</p> <p>Celestron doesn’t offer a f/6.3 Schmidt-Cassegrain telescope, because the design is impractical, with a large central obstruction, and resulting loss in contrast. This, added to the inability to utilize longer focal ratios for certain objects, led Celestron to design the four-element, fully multicoated f/6.3 Reducer/Corrector. Results are amazing both visually and photographically.</p> <p> </p>

<p class="MsoNormal">Eyepiece for precise collimation performance to Newton (mirror) reflector telescopes.</p>

<p style="text-align: justify;"><iframe src="//www.youtube.com/embed/HaxqWMIt8X0" width="100%" height="314" allowfullscreen="allowfullscreen"></iframe></p> <p style="text-align: justify;">The Personal Solar Telescope (PST) is a Coronado innovation. The world's most popular telescope to observe the Sun. This <strong>40 mm diameter</strong> highly portable dedicated solar telescope features completely internal non-removable and student safe solar filtering optics with a <strong>1.0-angstrom hydrogen-alpha (Ha) bandpass</strong> for great surface detail. The PST will show you the dynamic, ever-changing prominences at the edge of the Sun as well as filaments and other surface details in amazing detail, all in the brilliant and distinctive red color of hydrogen-alpha light.</p> <p style="text-align: justify;">Study of the solar disk is now within the reach of the amateur astronomer. The PST represents the same technology and quality that goes into a SolarMax series telescope available to the new solar astronomer at the cost of some single premium eyepieces.</p> <p style="text-align: justify;">Features a 40mm diameter dedicated Ha optical system with <strong>30 mm internal etalon primary blocking filter</strong> and incorporated focuser and bandpass fine adjustment controls and built-in solar viewfinder. <strong>400 mm focal length, f/10 focal ratio, with Cemax 20 mm eyepiece</strong>. Tripod not included.</p> <p style="text-align: justify;">Mounting options include use on a standard photo tripod (scope is threaded for a standard camera 1/4-20 mounting bolt), use of a Coronado Malta tabletop tripod (sold separately) or the Meade DSM mount with computerized Autostar and GOTO technology. A custom hard case is available separately - see stock number PSTC.</p> <p style="text-align: justify;">Open up a whole new world of astronomy with the Coronado PST.</p> <p> </p>

<p><strong>Double stack:</strong> Every SolarMax telescope also comes with double stack. This means that<strong> two etalon filters</strong> are fitted one behind the other. This reduces the half width of the light which passes through the H-alpha line to less than 0.5 Angstroms. Without double stack, the half width is less than 0.7 Angstroms. The half width is provided in the product name and in the telescope's technical information.</p> <p>The smaller half width results in higher contrast. The Sun’s structures appear three-dimensional. The image is also darker and needs to be finely readjusted using the tuning system due to the filter’s smaller half width.</p> <p><strong>BF blocking filter</strong>: The deflection optics with the eyepiece receiver also accommodate the blocking filter. This filter reduces the brightness of the solar image and is therefore a very important part of the solar telescope, and which must under no circumstances be removed! For purely visual observing, a small blocking filter is sufficient, but for photography a larger one should be selected.</p> <p><strong>Sol Ranger</strong>: Pointing a telescope at the sun is more difficult than you may think and can often involve involuntary glimpses of the sun with unprotected eyes! The <strong>Sol Ranger</strong> finder scope is a special solar finder that uses a ground glass screen. This allows you to point your telescope at the sun easily, safely and quickly.</p> <p>Delivery includes a <strong>Cemax eyepiece</strong>. The eyepieces of this series are specially optimized for observation in H-alpha. The optimization applies to the remuneration. The eyepieces have no 'filtering effect' and can therefore also be used at night.</p> <p><strong>It not only matters which telescope you buy but also where you buy it. Our additional services:</strong></p> <ul> <li>We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.</li> <li>We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.</li> <li>We also provide an edition of the exciting astronomy magazine, “Sterne und Weltraum” with each telescope.</li> </ul> <p> </p>

<table> <tbody> <tr> <td class="desc"> <p style="text-align: justify;">Coronado has developed a series of telescopes as a result of the often asked question, "What is the best telescope to use with a Coronado filter?" While almost all refractors and most reflecting telescopes can be used with a Coronado filter, no other telescope has been designed with all its optical aberrations and coatings optimised at H-Alpha. Most nighttime telescopes, when used at H-alpha, will not have the image contrast exhibited by a SolarMax nor the image quality. Most broadband coatings, used on such telescopes, will have reduced effectiveness at this wavelength and telescopesYear Coronado Warranty. (particularly reflectors) not specifically designed for Solar viewing, will exhibit unnecessary scattering and spurious light transmission. All of the Coronado scopes, even the PST, have been designed with this one wavelength of light in mind and will increase contrast and give you a darker background for viewing and imaging. </p> <p style="text-align: justify;">"Why buy a telescope that can only look at one object?" The Sun in H-A is the most dynamic object you will ever see while pointing a telescope skywards. Constantly changing and never repeating itself the Sun through a Coronado filter will hold your attention for a lifetime. Coronado telescopes serve to enhance that view for you, your family, and friends. The telescopes provide an easy and portable set up that is always ready right out of the box. For those looking for more aperture we proudly present the SolarMax II 60 dedicated H-alpha telescope. Built to our exacting standards the SolarMax II 90's provides the user a telescope with the same lightweight portability of our SolarMax II 60 but the extra aperture greatly increases the resolution of detail on the surface and on the limb. With over twice the surface area of the SolarMax 60 the difference is obvious. </p> <p style="text-align: justify;">The SolarMax II 90 is the largest H-A telescope ever to be mass-produced and is in use around the world from private observatories to professional research facilities. Noted for incredibly sharp, 'contrasty' H-Alpha views, and stunning detail. Even when viewing with a single eyepiece the sun appears fully animated even revealing hints of curvature, this effect is enhanced when used with bino-viewers. The SolarMax 90 is compatible with most imaging systems and amateur astronomers have produced images that rival those gathered by multi million dollar systems. </p> <p style="text-align: justify;">This Coronado SolarMax II 90 is a handsome aluminum and black f/8.8 refractor with 800mm focal length and 90mm aperture. Its purpose is simple. The Coronado SolarMax 90 <0.7A was custom-built to optimize the performance of the SolarMax 90 Hydrogen-Alpha solar filter. The SolarMax 90 was intended to do much than just reveal sunspots... it was meant for studying prominences, flares, granulation and more. The achromatic doublet lens designed by Dick Buchroeder utilizes special multi-layer antireflection coatings on all air-glass surfaces to optimize anti-ghosting. This is an important feature when observing such a bright target as the Sun. Safety issues include hard vacuum-deposited. non-degenerating coatings. This means not only are you assured your vision is protected but your investment as well. The Coronado SolarMax 90 BF15, when properly cared for, will last a lifetime. </p> <p style="text-align: justify;">At the heart of the SolarMax 90 <0.7A , a two-piece solar filter is formed from a full-aperture 90mm etalon positioned in front of the objective lens and a 15mm clear aperture blocking filter incorporated into the diagonal. The solar filter has a <0.7 Ångstrom passband, centered on the 6562.8 Ångstrom H-Alpha line and the sub-Ångstrom passband width gives a perfect balance of prominence and surface features. The assembly is thermally stable at 0.005Å per degree Centigrade, so there is no drifting off the H-Alpha line as the filter heats up during normal observing. The 15mm clear aperture blocking filter is perfectly matched to the focal length of the telescope to give full disk views of the Sun. </p> <p style="text-align: justify;">On the outside, the Coronado Solar Max II 90 <0.7A consists of a manual 1.25" drawtube which extends for coarse focusing. A secondary helical focusing ring around the drawtube is then used to provide the appropriate final fine focusing. Both visual observing and afocal imaging, as well as barlow lenses are able to come to focus using this method and digital photography and binoviewers also experience no problems with focus. Between the the solar filter etalon and the objective lens you'll find the RichView tuner which mechanically tilts the filter's bandpass of the h-alpha line. This allows observance of Doppler-shifted solar activity, such as moving flares!</p> <br /><br /></td> </tr> </tbody> </table>

<p>DayStar’s Imaging Focal Reducer can give you more field of view in your images. 2” to T mount, with included T extension tube for even more reduction.</p> <p>With a T-mount camera connected directly to the reducer, the focal length is cut in half - 0.5X. Add the 20mm extension tube for 0.33X.</p> <p>Focal reducer specifications:</p> <ul> <li>Four elements in two groups.</li> <li>36mm clear aperture.</li> <li>Front: Male 2” eyepiece drawtube.</li> <li>Rear: Male T thread (M42x0.75)</li> <li>Flange to flange distance: 5mm.</li> <li>Overall length: 38mm.</li> </ul> <p> </p> <p>Extension tube specifications:</p> <ul> <li>Front: Female T-thread (M42x0.75)</li> <li>Rear: Male T-thread (M42x0.75)</li> <li>Flange distance: 20mm</li> <li>Overall length: 25mm</li> <li>Knife edge baffles for superior contrast.</li> </ul> <p> </p> <p> </p>

<p>Selle akukaabli abil saate oma looduskaamerat kasutada välise toiteallikaga. Sobib looduskaameratele: MINI, PRO, EXTRA, samuti MOBIL ja BLACK versioonid.</p> <p><br />Kõrgus: 2 m</p> <p>Toide: 6 volti</p> <p>Pikkus: 2m</p> <div id="gtx-trans" style="position: absolute; left: 108px; top: -14px;"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin allow-scripts"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div>

<p><span style="font-weight: bold;">Dorr</span> Danubia <span style="font-weight: bold;">Alpina LX Porro Prism 10x50</span> Binoculars has a large center focus wheel and retractable eyecups for eyeglass wearers and a solid rubber armor - this for additional comfort when viewing through the optics. The <span style="font-weight: bold;">Alpina LX </span>features MC <span style="font-weight: bold;">(Multi Coated) optics</span> and <span style="font-weight: bold;">BAK-7 prisms</span>, this means no reflection when <span style="font-weight: bold;">viewing rich contrasts</span>. Includes a 1/4" tripod socket and a carry case.</p>

<p>Universal binoculars of the classical porro prism design. For comfortable and strain free observations, all 5 binocular types are fitted with a comfortably large centre focus wheel, retractable eye-cups for eyeglass wearers and a solid rubber armour. The multicoated optics and the BK7 prisms provide reflection free viewing impressions of rich contrasts. Supplied with case.</p>

<p><strong>Dorr Alpina LX Porro Prism 20x50</strong> Binoculars has a large centre focus wheel and retractable eyecups for eyeglass wearers and a solid rubber armour - this for additional comfort when viewing through the optics. The Alpina LX features MC (<strong>Multi Coated</strong>) <strong>optics</strong> and <strong>BAK-7 prisms</strong>, this means no reflection when viewing rich contrasts. Includes a 1/4" tripod socket and a carry case.</p>

<p class="p1"><span class="s1"><strong>Dörr Alpina Pro 8-20x50 Porro Prisma Zoom binokkel</strong> on suurepärase optikaga, <strong>kvaliteetse katte</strong> ja fantastiliste <strong>BK7 prismadega</strong> binokkel, mis võimaldavad kasutajal vaadelda objekte tõeliselt detailselt, jäädvustades värvi ja sügavust.</span></p> <p class="p1"><span class="s1"><strong>Alpina Pro Zoom</strong> binokli optilisel konstruktsioonil on ka ka suured väljalaskeava pupillid (objektiivi läätse), mis tagavad <strong>eredad ja säravad pildid</strong> ka keerulisemates valgustingimustes. Binokkel on väga mitmekülgne, kuna sellel on võimalus suumida objekti, et seda paremini vaadelda. Lihtsalt fokusseerige objektile ja seejärel liigutage suumikangi üles või alla, et seda lähemale või kaugemale tuua. Suumimisvõimalus aitab tõesti kaasa objekti peenemate detailide väljatoomisele. Suumitavad binoklid on kurikuulsad selle poolest, et nad kaotavad suumimisel teravuse, kuid see binokkel säilitab selge pildi otse läbi suumimisvõimaluse.</span></p> <p class="p1"><span class="s1"><strong>Dörr Alpina Pro 8-20x50 Porro Prism Zoom</strong> binokkel sobib ideaalselt igat liiki vaatlusteks välitingimustes ning kummikate tagab täiendava vastupidavuse ja hea haarduvuse. Sissetõmmatavad silmakatted on ideaalsed prillikandjatele, lihtsalt hoidke neid prillide kandmisel allapoole keeratuna ja ilma prillideta kasutamisel keerake need jälle üles.</span></p>

<p>FEATURES:</p> <ul> <li>Lightweight and easy to install;</li> <li>It is a spare or replacement antenna;</li> <li>Designed for use with Snapshot Mobile 5.1 and 8.0i;</li> <li>Type: GSM/3G Antenna</li> <li>Cable Length: 3m</li> </ul>

<p>Kvaliteetse akrüülobjektiivi<strong>, integreeritud LED-valgustuse (2 LED-i)</strong> ja tugeva alumiiniumist käepidemega käes hoitav suurendusklaas.</p> <p>Ideaalne abivahend postmarkide, müntide, kaartide, putukate, taimede ja muude objektide lugemiseks ja vaatlemiseks. Luup on pakendatud kõvasse karpi.</p> <div id="gtx-trans" style="position: absolute; left: 962px; top: -14px;"> </div>

<p><strong>Kvaliteetse akrüülobjektiivi</strong>, <strong>integreeritud LED-valgustuse (2 LED-i)</strong> ja ergonoomilise kujuga ning <strong><em>Soft-Touch</em></strong> pinnaga kaetud käepidemega käes hoitav suurendusklaas. Ideaalne abivahend postmarkide, müntide, kaartide, putukate, taimede jmt lugemiseks ja vaatlemiseks. Suurendusklaas on pakendatud kõvasse karpi.</p> <div id="gtx-trans" style="position: absolute; left: 1171px; top: -14px;"> </div> <p> </p>

<p>Dörr metal housing for wildlife cameras GH-2</p>

<div>With the <strong>DÖRR Universal Smartphone Photo Adapter SA-1 </strong>you take pictures or videos with your <strong>smartphone through your spotting scope</strong>.</div> <div data-empty="””true””"> </div> <div>For detailed distant shots of nature and wildlife.</div> <div data-empty="””true””"> </div> <div>Suitable for smartphones with a width of approx. 56-98mm and spotting scopes with an eyepiece diameter of approx. 26-54mm.</div> <div data-empty="””true””"> </div> <div>Simply clamp your smartphone into the holder and place the photo adapter on the eyepiece and fix it. Zoom in on the observation object with the scope and focus it - with the camera function of your mobile phone, you can now take circular photos or videos.</div> <p> </p> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div>

<p>Kasuta <strong>sisemise 1500 mAh Li-Ion akuga DÖRR Päikesepaneeli SP-1500</strong> <strong>jätkusuutlikuks ja tööea märgatavaks pikendamiseks</strong> näiteks oma <strong>DÖRR looduskaameral</strong>.</p> <p><strong>•</strong><strong> SnapShot Cloud 4G</strong><br /><strong>• </strong><strong>SnapShot Multi Mobil 3G</strong><br /><strong>• </strong><strong>Extra Black 12.0i HD </strong><br /><strong>• </strong><strong>või teiste seadmetega 12 Voldise pistikupesaga</strong></p> <p>Täiustatud päikesepaneel, mille <strong>maksimaalne väljundvõimsus on 2 W,</strong> ei nõua otsest päikesevalgust - paneel toodab piisavalt energiat isegi sombuse ilmaga ja ka talvel. See teeb võimalikuks pideva isevarustuva jälgimise.</p> <p><strong>IP54</strong> vastava kaitseklaasiga kaetuna peab päikesepaneel vastu isegi halbadele ilmastikuoludele. Komplektis oleva <strong>kronsteiniga</strong> saab päikesepaneeli kindlalt seinale või <strong>kinnitusrihma</strong> abil puule kinnitada. Kohanda päikesepaneeli Päikese suunas kronsteini <strong>liigutatavate liigendite</strong> abil.</p> <p> </p>

<p>Dorr Tree Screw 1/4" on mõeldud kasutamiseks koos <strong>WildSnap ja Wildcam X</strong> kaameratega. Lihtne kasutada ja kaamerat puu külge kinnitada.</p> <div id="gtx-trans" style="position: absolute; left: 1041px; top: -14px;"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin allow-scripts"></iframe></p> <div class="fskey-tooltip"> </div>

<p>Since video and audio quality of high-tech devices are getting better, SDHC need higher recording speed and more storage space to save high-resolution digital images.<br /><br />Transcend SDHC cards <strong>with class 10-specification</strong> offer <strong>transmission rates of up to 30MB/sec.</strong> with devices that support SD 3.0. Your device stays fast responsive while recording and during playback of data. The SDHC Class 10-series offer storage space and improved recording performance with support for FAT32 file formats. With 16GB storage space you may save your entire music or photo collection on current high-resolution digital cameras, HDTV digital video cameras, PDAs and other devices.<br /><br /><u>Features:</u><br />• <strong>Compatible with the SD 3.0 standard</strong><br />• <strong>Class 10 classification</strong> guarantees fast and reliable writing speed<br />• <strong>Easy handling</strong><br />• <strong>Integrated Error Correction Code (ECC)</strong> for the identification and correction of transmission errors<br /><br /><u>Technical specifications:</u><br />Memory card type: <strong>SDHC</strong><br />Storage capacity: <strong>16 GB</strong><br />Speed class: <strong>Class 10</strong><br />Max. reading speed: <strong>30 MB/s</strong><br />Max. writing speed:<strong> 11 MB/s</strong></p>

<p><strong>DÖRR SIGNAL XP KATUSEPRISMAGA BINOKKEL - TÄIUSLIK JAHIKAASLANE</strong></p> <p>Oranž kummist kate on hea haardega ja samal ajal hästi nähtav - jahipidamisel on ohutus esikohal ning binoklit on hämarates oludes lihtsam leida.</p> <p>Täielikult mitmekihilised läätsed tagavad suurepärase ja tõetruu värvipildi. Kvaliteetsed <strong>BAK-4</strong> prismad tagavad suure valgusläbivuse - isegi halva nähtavuse korral või hämaras jääb vaade selgeks ja eredaks. Tänu lämmastikgaasiga täitmisele on binokkel lühikest aega udukindel ja veekindel kuni 1 meetri sügavuseni.</p> <p>Keeratavad silmakatted muudavad <strong>Signal XP</strong> binoklid sobivaks ka prillikasutajatele. Kiire ja vaikne fokusseerimine keskse fookusratta abil. Pikemate vaatluste tegemiseks keerake keskse ratta all olev kruvikork lahti ja kinnitage binokkel statiivile.</p> <p>Komplektis on kandekott, kanderihm, okulaari- ja objektiiviotsikud ning puhastuslapp.</p> <p> </p>

<p>The prepaid multi-network SIM card from simHERO works throughout Europe and connects your DÖRR Surveillance camera SnapShot Cloud 4G quickly and easily to the Internet. It works independent from specific networks and provides maximum network coverage.</p> <p> </p> <p>- Pre-configured data SIM card for DÖRR Surveillance camera SnapShot Cloud 4G<br />- Automatically searches for the best network (over 100 mobile networks in Europe)<br />- Uses the 2G, 3G and 4G network</p>

<div>With this <strong>12V/12Ah lead battery</strong> you can extend the runtime of your surveillance camera significantly. It is perfect to use in combination with our <strong>DÖRR game cameras SnapShot Cloud 4G, SnapShot Mobil 3G and SnapShot Extra black 12.0i HD</strong>.</div> <div data-empty="true"> </div> <div>This SLA (<strong>S</strong>ealed <strong>L</strong>ead <strong>A</strong>cid) battery is sealed, may not leak and is maintenance-free. It may be installed in many positions, even lateral or tilted. Charge the lead battery with a household automatic charger for motorcycles or a car battery charger.</div>

<p style="user-select: auto;"><span style="user-select: auto;">220-240 Volt AC Adapter is for <span style="font-weight: bold; user-select: auto;">Dorr SnapShot </span>Stealthcam Cameras, ideal for when you require a full charge at all times.</span></p> <p style="user-select: auto;">Input power: 100-240V, 50-60 HZ, 0,4A</p> <p style="user-select: auto;">Outgoing power: 6,0V, 2,0 A</p> <p style="user-select: auto;">Warranty: 2 Years</p> <p style="user-select: auto;">Weight: 141 g</p> <div style="user-select: auto;"> </div>

<p><strong>Weatherproof and stainless metal housing ”Made in Germany” - prevents theft and vandalism and protects your surveillance camera against influences of weather.         </strong><br /><br />Various openings on the rear side of housing offer different mounting options. The best protection against theft can be achieved by attaching the housing to a tree or to a wall using screws and dowels.<br /><br />The housing offers eyelets for a mounting strap, for a cable lock on the rear side and for a padlock on the front side, as well as slots for the antennas of the camera (*).<br /><br />The opening on the bottom of housing allows connecting an external energy source to the camera.<br /><br />No housing can guarantee 100% protection, but with a <strong>material thickness of 1.5 mm,</strong> the solid housing discourages thieves and vandals – <strong>this may prevent a first access in many cases. </strong><strong>Without the right tools, thieves don’t stand a chance!</strong></p>

<p><iframe src="//www.youtube.com/embed/-Ddvcbg7zwA" width="100%" height="314" allowfullscreen="allowfullscreen"></iframe></p> <p>The <strong>DÖRR </strong><strong>SnapShot Cloud 4G</strong> sends <strong>recorded pictures</strong> over the <strong>fast 4G connection</strong> directly to the <strong>cloud</strong> – get access to your pictures worldwide with the <strong>DÖRR Cloud APP</strong>. Further change the most important <strong>settings online</strong>with the DÖRR APP, e.g. <strong>multi-shot, time lapse or timer</strong>. Make your photos available for fellow hunters and friends with the share function. The extreme fast<strong> trigger speed</strong> of the SnapShot Cloud 4G is only <strong>0,4 seconds</strong>. With its <strong>12 Megapixel resolution</strong> every detail is recorded. <strong>57 invisible black vision LEDs</strong> ensure inconspicuous surveillance up to <strong>20 meters</strong>. The <strong>jet water proof</strong> housing in perfectly discreet camouflage defies all weather conditions. The camera is <strong>without SIM-Lock</strong>, so you can use it with all common sim cards.<br /><br />• <strong>57 invisible black vision LEDs</strong><br />• <strong>High resolution colour pictures </strong>during daytime, contrast-rich <strong>black-and-white pictures</strong> at night<br />• Image resolution up to max. <strong>12 MP</strong><br />• <strong>HD videos including sound recording</strong> with up to <strong>59 seconds </strong>length<br />• Multi-shot (<strong>1-5 photos </strong>per trigger), timer function with <strong>2 work frames</strong> per day,<br />   <strong>time lapse</strong> (interval), <strong>combined image and video function, password protection</strong><br />• <strong>Large colour display </strong>for menu settings and <strong>image playback </strong>and <strong>video playback with sound</strong><br />• Multilingual, <strong>intuitive </strong>menu navigation<br />• Photos and videos are also stored on SD card (optional)</p>

<p><span style="font-weight: bold;">The Dorr Snapshot Mini 12MP HD Black-LED Wildlife Camera</span> - Camouflage is a powerful yet versatile game and a surveillance camera in a robust, camouflage housing. The 40 Black Vision LED’s mean perfect high-contrast black and white images in the darkness and brilliant recordings at daylight. For use in and outside with the combined picture and video function with the video also recording audio. Features a resolution up to 12MP together with the new sensor 2MP with night auto mode guarantees unprecedented image quality. Motion detection is available within a range of 15m and 52º detection angle depending on the weather conditions.</p>

<p style="text-align: justify;">A high quality CNC Machined 10:1 dual-speed Crayford focuser designed as a direct replacement/upgrade for the rack & pinion focuser supplied with the Sky-Watcher Evostar-102/120/150, Startravel-102/120/150 and Evostar-80ED/100ED/120ED Refractors. <span style="line-height: 1.6;">Will accept both 1.25" and 2" standard format eyepieces. Features adjustable tension and locking clamp and indexed drawtube.</span></p>

<p style="text-align: justify;">A Low Profile CNC machined 10:1 dual-speed focuser designed for Newtonian Reflector telescopes of 9" to 15" aperture, and accepts either 1.25" or 2" eyepieces. Provides an exceptionally smooth focusing operation with the utmost precision, with the aid of its fine-focusing facility. 24mm Drawtube.</p>

<p>Features of infrared illuminator are lightness and compactness in combination with modern digital technologies namely: digital control of output power, memory of presets, uniform spot, 18650 rechargeable battery and adjustment of laser spot position.</p> <p>The IR-530-850 digital 2 is infrared illuminator based around laser diode technology and intended for use with digital and night vision devices for long-range observation.</p> <p><strong>Batteries not included!</strong></p> <p>IR in action:</p> <p><img src="../image/catalog/electrooptics/1_775x360.png" alt="Imagem" /></p> <p><img src="../image/catalog/electrooptics/2_775x360.png" alt="Imagem" /></p> <p><img src="../image/catalog/electrooptics/3_775x360.png" alt="Imagem" /></p> <p><img src="../image/catalog/electrooptics/4_775x360.png" alt="Imagem" /></p> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div>

<p><strong>IR-530-850 dimmer </strong>is infrared laser illuminator designed for application with any digital and analog night vision devices rocking Image Intensifier Tubes, CCD and CMOS receivers to deliver object illumination at night.</p> <p><strong>Metal body</strong></p> <p>Illuminator is fully made of metal. It can easily withstand huge drops and other damage.</p> <p><strong>Powerful laser and coated optics</strong></p> <p><strong>IR-530-850 dimmer</strong> has rectangular beam which makes it possible to “crawl” above terrain. Thus, front object remains clearly highlighted whereas shooter’s underfoot zone remains free of any flash. You will always be able to estimate your trophy !</p> <p><strong>Smooth adjustment</strong></p> <p>You can always control your beam power ! It is very vital for those who have devices with highly-sensitive sensors or Image Intensifier Tubes.</p> <p><strong>Internal beam adjustment</strong></p> <p>Beam always highlights same place and it won’t be deviated / disturbed when illuminator is shifted / transported. No any “classmate” can deliver such option.</p> <p><strong>Batteries not included!</strong></p> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div> <p><iframe id="fskey-iframe" class="fskey-autofill-dlg" style="display: none;" width="300" height="150" sandbox="allow-same-origin"></iframe></p> <div id="fskey-tooltip" class="fskey-tooltip"> </div>

<p>The timeless classic folding magnifier: <br /><br />Uses:</p> <ul> <li>the practical magnifier for on the go;</li> </ul> <ul> <li>fits in any pocket or glove compartment.</li> </ul> <p><br />Features:</p> <ul> <li>small, handy and compact;</li> </ul> <ul> <li>the lens is protected by a leather case.</li> </ul>

<p style="margin-bottom: 10px; line-height: 1.5em;">The <span style="font-weight: bold;">Eschenbach Sektor D 8x56</span> Binoculars are <span style="font-weight: bold;">lightweight </span>and easy to use for <span style="font-weight: bold;">sporting, hiking, birding</span>, and other outdoor activities.</p> <p style="margin-bottom: 10px; line-height: 1.5em;">Featuring <span style="font-weight: bold;">phase corrected BaK-4 prisms</span> with <span style="font-weight: bold;">fully multi-coated lenses</span> for<span style="font-weight: bold;"> bright, high-quality images</span>. Additionally, the Sektor series binoculars are <span style="font-weight: bold;">waterproof</span> and<span style="font-weight: bold;"> nitrogen purged</span> to withstand any climate you might find yourself in. Eyeglass wearers will also appreciate the 'click-locking' diopter for easy adjustment of focus. A carrying strap, protective case, and lens cover compliment the Sektor binoculars series perfectly.</p>

<p><strong>The CBC 5 charger is designed</strong> for 6V/12V gel, lead acid, AGM, VRLA, VLA, SLA, WET, GEL, Lead-Acid batteries. Charging is automatic, multi-step. Charging mode, the operation of <strong>the charger is indicated on the backlit LCD display.</strong><br /><br /><strong>The first step</strong> is to measure and indicate the voltage at the battery terminals and determine its type. For a 12V battery, by pressing the ”MODE” button, you can select a charging program (0.8A/3.8A) as well as a ”winter” mode characterized by a higher charging voltage (this is also the default recommended charging mode for many modern AGM batteries). The condition of the battery is assessed and reactivated if necessary (only for heavily discharged cells) - charging with reduced current with single pulses.<br /><strong>The next step</strong> is basic charging - depending on the charging mode with a maximum intensity of 0.8A or 3.8A.<br /><strong>The next steps are</strong> to control the charging process - as the voltage on the battery increases, the charging current is reduced.<br /><strong>In the final phase of</strong> charging, the current is smoothly limited to 0.5A - this is an excellent protection against the phenomenon of ”gasification” of the battery. When the voltage reaches 14.4V/14.8V (for 12V battery) and 7.3V (for 6V battery), the main charge is complete.<br /><strong>The final</strong> stage is the phase of monitoring the voltage on the battery - in case of prolonged leaving the charger connected to the battery and the voltage drop to 13.1V/12.8V (for a 12V battery), the charger turns on the support charge to prevent further discharge or souscoulation of the battery.</p> <p> </p>

<p><strong>Wide-angle eyepiece with high sharpness, gas filling and 68 ° apparent field</strong></p> <p>This eyepiece with 68 ° field of view is filled waterproof and with gas. The gas effectively prevents internal fogging, the ingress of dust and moisture and the formation of glass mushroom. Thus, the high-quality multi-layer coating is particularly well protected and durable. The handling is easier, because you can handle the eyepiece easily with cleaning fluid and strong dew can not penetrate between the lenses. Eyepiece so this guarantees a perfect observing experience for many years!</p> <p>Of course, you must not make any compromises in image quality, because the eyepiece offers a sharp and high contrast images throughout the entire field of vision - even with telescopes with a fast aperture. High quality glass material and the blackened lens edges provide along with the EMD multi-layer coating for maximum contrast.</p> <p>In addition, include a folding rubber eyecup, a standard filter thread and a tapered locking groove in the stainless steel receptacle to the standard equipment of this eyepiece. All eyepieces of the 68 ° series are parfocal. This means you do not need to correct the focus when switching eyepieces.</p>

<p><strong>Wide-angle eyepiece with high sharpness, gas filling and 68 ° apparent field</strong></p> <p>This eyepiece with 68 ° field of view is filled waterproof and with gas. The gas effectively prevents internal fogging, the ingress of dust and moisture and the formation of glass mushroom. Thus, the high-quality multi-layer coating is particularly well protected and durable. The handling is easier, because you can handle the eyepiece easily with cleaning fluid and strong dew can not penetrate between the lenses. Eyepiece so this guarantees a perfect observing experience for many years!</p> <p>Of course, you must not make any compromises in image quality, because the eyepiece offers a sharp and high contrast images throughout the entire field of vision - even with telescopes with a fast aperture. High quality glass material and the blackened lens edges provide along with the EMD multi-layer coating for maximum contrast.</p> <p>In addition, include a folding rubber eyecup, a standard filter thread and a tapered locking groove in the stainless steel receptacle to the standard equipment of this eyepiece. All eyepieces of the 68 ° series are parfocal. This means you do not need to correct the focus when switching eyepieces.</p>

<p><strong>Wide-angle eyepiece with high sharpness, gas filling and 68 ° apparent field</strong></p> <p>This eyepiece with 68 ° field of view is filled waterproof and with gas. The gas effectively prevents internal fogging, the ingress of dust and moisture and the formation of glass mushroom. Thus, the high-quality multi-layer coating is particularly well protected and durable. The handling is easier, because you can handle the eyepiece easily with cleaning fluid and strong dew can not penetrate between the lenses. Eyepiece so this guarantees a perfect observing experience for many years!</p> <p>Of course, you must not make any compromises in image quality, because the eyepiece offers a sharp and high contrast images throughout the entire field of vision - even with telescopes with a fast aperture. High quality glass material and the blackened lens edges provide along with the EMD multi-layer coating for maximum contrast.</p> <p>In addition, include a folding rubber eyecup, a standard filter thread and a tapered locking groove in the stainless steel receptacle to the standard equipment of this eyepiece. All eyepieces of the 68 ° series are parfocal. This means you do not need to correct the focus when switching eyepieces.</p>

<p>One of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lights, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects bejond the solar systems enourmously. Depending on the type of the celestial object it is possible to increase the contrast dramatically by <strong>blocking the annoying artifical light</strong>. <br /><br />The <strong>EXPLORE SCIENTIFIC UHC filter </strong>uses a characteristic property of the so called <strong>emmission nebulae</strong>. Those objects glow in special colors, the so called emmission lines. Those emmission lines are linked to chemical elements - in this case <strong>hydrogen </strong>at 486nm and 656nm, plus <strong>oxygen </strong>at 496nm and 501nm. The Explore Scientific UHC nebula filter blocks all other colors (and thereby nearly all of the artificial light) and only the <strong>emmission line </strong>of the <strong>hydrogen </strong>and <strong>oxygen </strong>can pass the filter. The result is astonishing: suddenly nebulae are visible at locations that were completely empty without filters. In suburbian skies for example the <strong>Owl-nebula M97</strong>, the <strong>Veil-nebula Ngc 699</strong>2 or even the bright <strong>Dumbell-nebula M27 </strong>are not clearly visible. By using this filter you can see the nebulae and their structures without problems. A must for every visual observer. The <strong>EXPLORE SCIENTIFIC nebula filters </strong>come with a individual test certificate - your guarantee to receive a premium filter.</p> <p> </p>

<p>These eyepieces with their <span style="font-weight: bold;">huge apparent field of view</span> not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods.</p> <p>These <span style="font-weight: bold;">ultra-wide angle</span> eyepieces played a critical role in the military for aiming at targets, and their <span style="font-weight: bold;">long eye-relief</span> counterparts helped reduce eye injury from recoil.</p> <p>Each 100° Series <span style="font-weight: bold;">Argon-Purged Waterproof eyepiece</span> is internally sealed and purged with inert, dry argon gas to prevent internal fogging, to halt the intrusion of fine particulates and fungus. This also maximizes the life of the internal coatings.</p> <p>To make sure, every <span style="font-weight: bold;">100°</span> eyepiece is tested by submerging them down to 1 meter of water for 30 minutes.</p> <p>All 100° Series eyepieces are <span style="font-weight: bold;">fully multi-coated</span> and edge-blackened to produce maximum contrast.</p>

<p>These eyepieces with their<span style="font-weight: bold;"> huge apparent field of view</span> not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods.</p> <p>These <span style="font-weight: bold;">ultra-wide angle</span> eyepieces played a critical role in the military for aiming at targets, and their<span style="font-weight: bold;"> long eye-relief</span> counterparts helped reduce eye injury from recoil.</p> <p>Each 100° Series <span style="font-weight: bold;">Argon-Purged Waterproof</span> eyepiece is internally sealed and purged with inert, dry argon gas to prevent internal fogging, to halt the intrusion of fine particulates and fungus. This also maximizes the life of the internal coatings.</p> <p>To make sure, every <span style="font-weight: bold;">100°</span> eyepiece is tested by submerging them down to 1 meter of water for 30 minutes.</p> <p>All 100° Series eyepieces are<span style="font-weight: bold;"> fully multi-coated </span>and edge-blackened to produce maximum contrast.                                                                                                                     </p>

<p>These eyepieces with their huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods. These <span style="font-weight: bold;">ultra-wide angle</span> eyepieces played a critical role in the military for aiming at targets, and their <span style="font-weight: bold;">long eye-relief</span> counterparts helped reduce eye injury from recoil.</p> <p>Each 100° Series <span style="font-weight: bold;">Argon-Purged Waterproof </span>eyepiece is internally sealed and purged with inert, dry argon gas to prevent internal fogging, to halt the intrusion of fine particulates and fungus. This also maximizes the life of the internal coatings.</p> <p>To make sure, every <span style="font-weight: bold;">100°</span> eyepiece is tested by submerging them down to 1 meter of water for 30 minutes.<br />All 100° Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast.</p>

<p>The "Wow-effect" eyepiece: You see deep sky objects as if you were in space!</p> <p>It makes you forget that you are looking through a telescope. This makes up for an unforgettable observing experience, that even exceeds the expectations of demanding amateur astronomers. Of course, it has the same specifications as the already well established 100° eyepieces: <span style="font-weight: bold;">inert gas purged</span>, and <span style="font-weight: bold;">waterproof</span>, the high-end <span style="font-weight: bold;">EMD coatings</span> are protected from the outdoors.  Dust, fungus, humidity and cleaning solutions cannot harm the precious eyepiece for years of observing to come!</p>

<p>One of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lights, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects bejond the solar systems enourmously. Depending on the type of the celestial object it is possible to increase the contrast dramatically by blocking the annoying artifical light. The<strong> EXPLORE SCIENTIFIC UHC filter</strong> uses a characteristic property of the so called emmission nebulae. Those objects glow in special colors, the so called emmission lines. Those emmission lines are linked to chemical elements - in this case hydrogen at 486nm and 656nm, plus oxygen at 496nm and 501nm. The <strong>EXPLORE SCIENTIFIC UHC nebula filter</strong> blocks all other colors (and thereby nearly all of the artificial light) and only the emmission line of the hydrogen and oxygen can pass the filter. The result is astonishing: suddenly nebulae are visible at locations that were completely empty without filters. In suburbian skies for example the Owl-nebula M97, the Veil-nebula Ngc 6992 or even the bright Dumbell-nebula M27are not clearly visible. By using this filter you can see the nebulae and their structures without problems. A must for every visual observer. The Explore Scientific nebula filters come with a individual test certificate - your guarantee to receive a premium filter.</p> <p> </p>

<p><strong>High power eyepiece</strong>s (e.g. 3mm to 10mm) are used not only for obvious observations of<strong> planets and double stars</strong>, but can be employed <strong>for bright, compact deep sky objects.</strong> Not only will the scale of an object like a planetary nebula or globular cluster be impressive as <strong>it fills the eyepiece FOV</strong>, but <strong>the background sky will be very dark</strong> as the <strong>contrast effect increases with added magnification</strong>, provided that the atmospheric seeing conditions are favorable enough to reveal a sharp image. <strong>The 6.5mm</strong> is a popular choice for a wide variety of telescopes, producing some of the highest magnification views that most astronomers will observe at.<br /><br /><strong>Comfort, Quality, Value.</strong> The Explore Scientific 52° LER Series Most short focal length eyepieces are <strong>excellent flat-field multi-element oculars </strong>that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. <strong>Expect exceptional quality and value versus a comparably priced Plossl.</strong>  <br /><br /><strong>These eyepieces are the choice for observers wearing glasses</strong> - with excellent performance and durability. The rubber inlet and the foldable eyecups make handling and using in the field easy. The <strong>patented EMD-coating</strong> produces <strong>high contrast images</strong> and prevents reflexes and ghosting. The argon purging effectively prevents internal fogging, and you don´t have to deal with dirt, fungus or cleansing fluids getting between the lenses. <strong>The eyepieces are sealed - this makes sure you will be able to enjoy these eyepieces for many years to come.</strong></p>

<p>With the introduction of the <strong>68° Series </strong>we are pleased to make two important improvements in <strong>eyepiece </strong>manufacture, the first being <strong>15 layer Enhanced Multi-layer Deposition (EMD™) coatings </strong>on all glass-to-air surfaces to gain maximum contrast and <strong>waterproofing </strong>the eyepiece with the use of <strong>Argon gas purging </strong>instead of standard Nitrogen gas. Although Nitrogen is a fine choice that will last for many years, Argon is a larger molecule that maintains its protective properties over a wider range of temperatures and is even more resistant to diffusion thereby further extending the protective waterproof environment of the eyepiece body.<br /><br />Through <strong>computer-optimized design</strong>, a careful selection of <strong>optical glasses</strong>, and enhanced multi-layer deposition coatings, the <strong>Explore Scientific 68° Series</strong><strong>™</strong><strong> eyepieces </strong>produce <strong>long eye-relief </strong>and ensure high image-correction, a flat field, and high contrast across the entire image field. An excellent choice for those who make extended visual studies of detail with subtle variations of brightness, and for those who must wear glasses while observing.<br /><br />All <strong>68° Series eyepieces </strong>are <strong>fully EMD </strong>(Enhanced Multi-Layer Deposition) coated and <strong>edge-blackened </strong>to produce superior contrast. </p>

<p>With the introduction of the <strong>68° Series </strong>we are pleased to make two important improvements in <strong>eyepiece </strong>manufacture, the first being <strong>15 layer Enhanced Multi-layer Deposition (EMD™) coatings </strong>on all glass-to-air surfaces to gain maximum contrast and <strong>waterproofing </strong>the eyepiece with the use of <strong>Argon gas purging </strong>instead of standard Nitrogen gas. Although Nitrogen is a fine choice that will last for many years, Argon is a larger molecule that maintains its protective properties over a wider range of temperatures and is even more resistant to diffusion thereby further extending the protective waterproof environment of the eyepiece body.<br /><br />Through <strong>computer-optimized design</strong>, a careful selection of <strong>optical glasses</strong>, and enhanced multi-layer deposition coatings, the <strong>Explore Scientific 68° Series</strong><strong>™</strong><strong> eyepieces </strong>produce <strong>long eye-relief </strong>and ensure high image-correction, a flat field, and high contrast across the entire image field. An excellent choice for those who make extended visual studies of detail with subtle variations of brightness, and for those who must wear glasses while observing.<br /><br />All <strong>68° Series eyepieces </strong>are <strong>fully EMD </strong>(Enhanced Multi-Layer Deposition) coated and <strong>edge-blackened </strong>to produce superior contrast.</p>

<p><b>Explore Scientific 82° Series™ extreme wide field eyepieces </b>are optimized to produce high contrast, high resolution, and superior flat field characteristics.<br> <br> The visual effect of these <b>eyepieces </b>with their <b>long eye-relief </b>and their <b>82° apparent field </b>is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The <b>82° Series eyepieces </b>come with a <b>twist-up rubber eye-guard </b>that raise to the desired height for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves. <br> <br> All <b>82° Series eyepieces </b>are <b>fully multi-coated </b>and <b>edge-blackened </b>to produce maximum contrast.                                                                                                                      <br></p>

<p><strong>Explore Scientific 82° Series™ extreme wide field eyepieces </strong>are optimized to produce high contrast, high resolution, and superior flat field characteristics.<br /><br />The visual effect of these <strong>eyepieces </strong>with their <strong>long eye-relief </strong>and their <strong>82° apparent field </strong>is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The <strong>82° Series eyepieces </strong>come with a <strong>twist-up rubber eye-guard </strong>that raise to the desired height for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves. <br /><br />All <strong>82° Series eyepieces </strong>are <strong>fully multi-coated </strong>and <strong>edge-blackened </strong>to produce maximum contrast.</p>

<p><strong>Explore Scientific 82° Series™ extreme wide field eyepieces </strong>are optimized to produce high contrast, high resolution, and superior flat field characteristics.<br /><br />The visual effect of these <strong>eyepieces </strong>with their <strong>long eye-relief </strong>and their <strong>82° apparent field </strong>is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The <strong>82° Series eyepieces </strong>come with a <strong>twist-up rubber eye-guard </strong>that raise to the desired height for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves. <br /><br />All <strong>82° Series eyepieces </strong>are <strong>fully multi-coated </strong>and <strong>edge-blackened </strong>to produce maximum contrast.                                                                                                                     </p>

<p><strong>Explore Scientific 82° Series™ extreme wide field eyepieces </strong>are optimized to produce high contrast, high resolution, and superior flat field characteristics.<br /><br />The visual effect of these <strong>eyepieces </strong>with their <strong>long eye-relief </strong>and their <strong>82° apparent field </strong>is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The <strong>82° Series eyepieces </strong>come with a <strong>twist-up rubber eye-guard </strong>that raise to the desired height for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves. <br /><br />All <strong>82° Series eyepieces </strong>are <strong>fully multi-coated </strong>and <strong>edge-blackened </strong>to produce maximum contrast.</p>