A Dobsonian telescope for instance, is a Newtonian reflector on a simple rotating box-style mount. The acronym SCT stands for Schmidt-Cassegrain Telescope, one of the most popular telescope designs in amateur astronomy today. A panorama of the Milky Way from Mauna Kea, Hawaii. I have a property in Arizona that i've been considering using to build an observatory I am very interested in purchasing a 1 Meter telescope. Advantages of a Ritchey-Chretien Telescope: Disadvantages of a Ritchey-Chretien Telescope: The most common reflector telescope we use today was invented by Isaac Newton, which is why you'll hear this type of telescope also referred to as a Newtonian reflector. Telescope for Adults & Beginner Astronomers - 80mm Aperture 600mm Fully Multi-Coated High Transmission Coatings with AZ Mount Tripod Phone Adapter, Carrying Bag, Wireless Control. 2018-2023 All rights reserved, reproduction prohibited, even partial. "name": "Do Ritchey Chretin Telescopes need to be collimated? NexDome is the NexGeneration observatory that was designed with paying attention to problems and shortcomings of similar class observatories. Keep checking back to see our newly added Telescopes For Sale. Astronomers are hopeful the $1.4-billion Thirty Meter Telescope will help them study the earliest moments of the universe after the Big Bang as well as identify more planets outside our solar system. The best spotting scopes offer higher magnification than a monocular but much more portability than a telescope Included in this guide: 1 Nikon Fieldscope ED50 View 2 Zeiss Conquest Gavia 85 View 3 Bushnell 20-60x65 Prime Spotting Scope Check Price 4 Celestron Ultima 100 Check Price 5 Vortex Viper HD 20-60x85 Check Price 6 Celestron Since the Ritchey-Chretien telescope uses mirrors to gather light it is technically a reflector, but unlike the more common Newtonian, the RC - short for Ritchey-Chretien - has a Cassegrain configuration. All debit and credit cards taken No PayPal Collection from our boatyard by arrangement . Hanover, MA 02339 USA Radio-over-Fiber kit for SPIDER radio telescope, CMP-19 computer for SPIDER radio telescopes, Radioastronomy: introduction to invisible sky book, SPIDER 230C 2.3 meter diameter (kit without mount), INTREPID 500-12 5.0m antenna system for S/X-band, INTREPID 500-5 5.0m antenna system for L/S-band, INTREPID 300-5 3.0m antenna system for L/S-band, Experiments: solar radio emission with SPIDER radio telescope, Radio astronomy at school with SPIDER radio telescopes, A compact radio telescope for amateur radio astronomy, SPIDER 230C installed in Deggendorf Institute of Technology, SPIDER 500A MarkII 5.0 meter diameter professional radio telescope, SPIDER 300A MarkII 3.0 meter diameter advanced radio telescope, SPIDER 230C 2.3 meter compact radio telescope (kit without mount), Ground station antenna systems for space communication, INTREPID 500-12 5.0m ground station antenna system for S/X-band, INTREPID 500-5 5.0m ground station antenna system for L/S-band, INTREPID 300-5 3.0m ground station antenna system for L/S-band, Feed: optimised for 1420 MHz, LHCP and RHCP, LNA: 2 high gain and stability 1420 MHz LNA units, Radiometer: 50 MHz instantaneous bandwidth, Continuous wind speed for operational tracking: 25 km/h. Shippingcosts are reduceddue to the nesting of parts, and thus smaller shipping packages. We explain in detail the differences between each type and style of telescope and outline their advantages and disadvantages as well. This is because your exposure time would be quick enough that the Earth's rotation would not come into play. To keep from accidentally doing that, remove the finder scope all together and either replace it with a solar finder, which projects an image telling you when the Sun is in the field of view, or use the telescope's shadow to ascertain when the sun is in the proper location. By the way, if you have a catadioptric telescope with a corrector plate at the very front of your optical tube, a dew shield or dew heater will help keep dew from forming on your optics on a damp night. Our equatorial mounts support device (patented) allows you to install the WEB230-5 antenna on any equatorial mount (with Losmandy dovetail and load capacity of at least 50 kg, ie. Maksutov-Cassegrain are great for visual use or planetary imaging, the views will be full of contrast with a darker background sky due to their long focal lengths. Motor Control:Industrial grade Parker brushless motor control system and built in electronicsMotor Azimuth and Altitude:Direct Drive 3 Phase Axial-Flux Torque MotorEncoder Azimuth and Altitude:Absolute encoder with a resolution of 0.078 arcseconds (16.5 million counts per revolution)Motor Torque:Greater than 200 ft-lbs of peak torqueDrive Electronics:Controls the altitude and azimuth motors and encoders, 2 direct drive de-rotators with absolute encoders, 4 fans zones, 3 dew heater zones, two focusers, an array of temperature sensors, M3 port selector, primary mirror covers and magnetic axis decelerationTelescope Control Software:Incorporates PointXP mount modeling software and All Sky PlateSolve both by Dave Rowe. Thanks to a two-counterweight-sliding system to protect against accidental drops, you can get a perfect balance even in the declination axis for maximum tracking and automatic goto performance of the mount. There are also focal reducers available to shorten a longer focal length and create a wider field that is better for astro-imaging, especially with today's larger sensors. These mounts offer, a high load capacity and pointing/tracking precision at a low price. The folded optical path of all catadioptric telescopes make them very portable for the size of their optics. Smaller NexStar SE telescopes are also available if you want something even more portable that costs less. Optical Design: Corrected Dall-Kirkham (CDK), Ritchey-Chretien (approx. The Samuel Oschin Telescope, a wide-field Schmidt telescope designed for survey work, has a 48-inch (1.2-meter) aperture with a glass corrector plate and a 72-inch (1.8-meter) mirror. Astronomical Telescope. oooo - I don't know what their price is on the 32" RC, but that thing is super-sexy! Alt-azimuth telescopes are also a good choice for visual astronomy. Full alutomated and remote controllable observatories in variaty of sizes. Don't worry, there is a great selection of telescopes for users of all ages and abilities, but it helps to know whether you will need a telescope that is lightweight or at least a telescope that breaks down into multiple components to make the task of set-up, breakdown, and transport more manageable for the person who will be using it. The NexStar 8SE is a portable Schmidt-Cassegrain computerized telescope that is easy to use and has 8 inches of aperture to see deep into space. Click Learn More to find your perfect Ritchey Chretin. We recommend a computerized equatorial mount to make it easier to align, find and track celestial objects. I can not do any publicity on this forum but this is something we should talk about privately if you want because I think I can help you. That said, there are some telescopes that remain popular over time due to amazing technology, ease of use or price point. I have 2 Orion telescopes- Mak-Cas and a reflector- both with 1.25 in focusers. Without counterweights the radio telescope would be completely biased towards the front (because of the weight of the primary reflector and LNA + feedhorn group with support rods) and therefore could not properly point and track objects in the sky. Discover amazing local deals on second-hand telescopes for sale Shop hassle-free with Gumtree, your local buying & selling community. However, if you want to do astrophotography, your Newtonian reflector needs an equatorial mount. Share. A finder scope fits on top of the main telescope and is used to help you find and center objects in your eyepiece. Sky-Watcher Black Short Tube Telescope, BK804AZ3. All observing is done with the telescope East of the polar axis; the telescope can no longer be used West of the pier. Do not even consider a roll off observatory in this area. 5. Spectrometer: 1024 channels Spectral resolution: 61 KHz Control software: RadioUniversePRO Weatherproof: No Continuous wind speed for operational tracking: 25 km/h Supply voltage: 1x12V DC + 1220V AC SPIDER 230C 2.3 meter diameter compact radio telescope (kit without mount): site preparation It went into operation in 1970, and its early successes showed the excellent image quality and observing conditions at the top of Mauna Kea. Telescope with 2 lenses Edu-science telescope 50-600 with X2 lens. The price for an item/offer must be listed and valid at the time of match. Here are a few of our favorite popular telescopes for sale: Dobsonian telescopes have remained popular over several decades. For catadioptric telescopes like the Schmidt-Cassegrain, knowing the focal length is not a clue to the tube length since the optical path is folded to create a more portable telescope. 149 King Street RC telescopes are usually best for imaging because of their lower contrast compared to most other telescope designs. I heard that new moon sold the 36 dob for 60k. The 8-meter telescope has 16 times the light-collecting area of the 2-meter telescope. If the telescope is for an adult, how much weight could they comfortably lift? 11 TR Tasco Lens Barlow 2X Coated Telescope Eyepiece Reflector Metal Japan $34.99 $5.30 shipping or Best Offer Tasco Beginner Telescope Microscope Specialty Combo Kit 49T 50x50mm 15" Tripod (3) $45.97 $12.65 shipping SPONSORED Tasco 70x 800mm Spacestation Telescope #49070800 $99.00 $24.00 shipping SPONSORED Weight: 161.55ozs (4580g) Length: 17.1in (43.4cm) Price Range. That's just the beginning! Remember, the best telescope is the one you will use! } We Do Right by Our Customers We love our customers! I don't know how much he sells a 40 inch but based on prices I've seen of his scopes in the past, it should be close to 100k$. Big aperture, bigger attitude, wi. This is one reason why amateur astronomers have several eyepieces (3-5 is most common). It must be in stock at the time of Price Match for us to make a guarantee. Deggendorf Institute of Technology is a university in Bavaria, I consent to the processing of my personal data for the purposes indicated in the Privacy Policy, Email: [emailprotected] Phone: +39 0434 1696106 Working Days/Hours: Mon - Fri / 9:00 - 12:00 and 15:00 - 18:00, Incentives to support Innovative Startups. 2023 Woodland Hills Camera & Telescope, All Rights Reserved. Thats because reflecting telescopes use mirrors, which provide more sensitivity to all wavelengths of light and dont cause chromatic aberrations like color fringing. It is highly portable radio telescope . That is because an alt-azimuth mount mimics the way objects move on the earth: up, down, back and forth. Las Cumbres has had 1m optics sets available for about $150K. No rainchecks will be issued for items out of stock at OPTcorp.com to match a competitor's price. Equatorial mounts support deviceallows to use the parabolic antenna on an equatorial mount. . Check out our 2022 telescope buying guide here! A special system of rear tie rods increases the rigidity of the structure while minimizing the deformation of such a large diameter parabolic antenna. Is this telescope for a child under 12, a teen, or an adult? Your friend will receive an email from you with a link to our site. Example: 2500 mm divided by 254 mm (10") equals an f/ratio of 9.84, which is usually rounded off, in this case to f/10. The feedhorn is designed to allow the reception of dual polarization with support for two professional Low Noise Amplifiers (LNA) for the 1420 MHz frequency. Are you sure you would be limited by 0.6 rather than 1.0 meter? A radio telescope consists of an antenna that collects the incoming waves from space, SPIDER 230C compact radio telescope has been chosen by Deggendorf Institute of Technology as instrument to introduce students to radio astronomy. Alpine is tiny and we always call Springerville and Eagar the Metroplex. On-structure and standalone metal dome.In business for over 50 years, Ash Dome is one of the most trusted names in dome observatories and tracking instrument shelters. 350 1,675 00 2,995.00 CASON (DEVICE OF C) Professional 8 X 40 HD Folding Lens 8 X Zoom Prism Binocular Telescope with Pouch for Long Distance, Bird Watching, Black 2,832 Alt-azimuth mounts, with their simple up, down, right and left movements work best for daytime use or nighttime use when looking at objects that are easy to find in the sky. The eyepiece provides a particular magnification when paired with a telescope, therefore most amateur astronomers use a variety of eyepieces to change magnification for different types of objects. Dont know what your requirements are or what you will be using it for? They've built I think ten one meter telescopes for their network. Diagram credit: Celestron. This is an ideal project for the radio astronomer that has limited space. All Rights Reserved. DISCOVER NOW AFFORDABLE RADIO TELESCOPES AND GROUND STATION ANTENNA SYSTEMS FOR RADIO ASTRONOMY AND SPACE COMMUNICATION Once you get used to it, seeing the focal ratio gives you a good indication of the field of view. As new. You will spend the most on telescopes for astrophotography. Smaller aperture RC telescopes are available for amateur astronomers who wish to work with an instrument that was designed for astro-imaging, including this inexpensive entry-level Ritchey-Chretien, the Apertura 6" f/9 Ritchey-Chretien OTA telescope. Yes, as with all reflector designs, RCs do need to be collimated and usuallysomewhatfrequently. You can use the SPIDER 230C with your equatorial mount (in order to work, the SPIDER 230C kit without mount requires an equatorial GOTO mount with at least 50 kg payload capacity, Losmandy-type style dovetail clamp). The PW1000 is a complete 1-meter observatory-class telescope featuring a direct drive altitude-azimuth (Alt-Az) mounting system designed and engineered by PlaneWave. When looking through someone else's telescope, the only thing you can do when this happens is remove your glasses and focus the telescope as best you can. },{ It must be in stock at the time of Price Match for us to make a guarantee. If you want RC instead of CDK then the price rises a lot and their PlaneWave 20" RC OTA only is same price. Manufacturer of astronomical observatories. If you are certain you want a research grade 1 meter scope, contact Markus Ludes at APM Germany. "acceptedAnswer": { Generally, classic refractors have a longer focal length, Newtonian reflectors tend to have a focal length that is shorter, and Schmidt-Cassegrain fall somewhere in the middle. 0 out of 5. We manage the entire order process through delivery and installation, troubleshooting any issues that may arise. (Advanced) - 3.2 to 8.5 Meter Choose Version. Research-grade RCs can costs tens of thousands of dollars, if not more, for this reason." High Point Scientific offers a wide range of used telescope accessories for sale, from used eyepieces to used equatorial mounts. InternetSales@optcorp.com, 800-483-6287 If that keeps happening, it doesn't matter how big your telescope is because it is not being used. SPIDER 230C radio telescope is not provided with an equatorial mount (we suggest the use of a EQ8 SynScan mount, you can read how to use it in the SPIDER 230C user manual) that must be added in order to make it work. The Dobsonian telescope consists of a Newtonian reflector optical tube assembly mounted on a very simple alt-azimuth box-style mount with a lazy susan base. Similarly, a telescope for an adult should be sturdy, move easily, and have quality optics that are big enough to see their items of interest. Apochromats, or APO refractors, can be used for many pursuits in amateur astronomy, including terrestrial use, visual astronomy and astrophotography. 254mm F14.5 Maksutov-Cassegrain (254F145MC), 130mm f6.3 StarFire GTX "Gran Turismo" with 3.5" Focuser (130GTX). It is highly versatile and can b e used for many tasks around the home as well as for trade use Square Kilometre Array (SKA) 2. The image below shows cables and connections that are needed to connect antenna external unit to the control room. The observatory contains two historically important telescopes: the 100-inch (2.5 m) Hooker telescope, which was the largest aperture telescope in the world from its completion in 1917 to 1949, and the 60 . Explore Scientific Firstlight Dobsonian Bundles, Angle Adjusters, Adaptive Optics & Field De-Rotators. } Professional telescopes are designed for advanced users seeking fast, lightweight systems with large apertures capable of collecting as much light as possible. The PlaneWave CDK500 "System" is $47k - http://planewave.comt/#.Wt5GpWcmSkw. TryNormand Fullum. If you plan to use one for viewing you will generally need to use a diagonal with your eyepiece because of the angle of the telescope when looking at the night sky. The feedhorn is positioned at the perfect point of focus of the antenna through a rigid structure with four supports to minimize obstruction, with a focusing device to precisely focus and maximize the performance of the entire radio telescope. Alas, the customer is having funding issues and re-thinking going beyond just one. Professional-grade telescopes combine advanced optics and ease of use for precision performance without the drawbacks of telescopes designed for casual night sky viewing. The Maksutov-Cassegrain telescope has an interesting design, and if you love the views through a long refractor, the Mak-Cass might just win you over. The majority of telescopes at professional observatories are a Ritchey-Chretien because their wide, flat fields are perfect for large CCD or CMOS sensors. Copyright var date = new Date(); document.write(date.getFullYear()); NexDome Observatories Store. I've seen little or no 'useful' work done with an amateur scope in the 1m aperture range but if the cash is available why not. CAGE Code: 639A3, Quality new & used scientific equipment, in-stock & ready to ship. "name": "Why are some Ritchey Chretin Telescopes priced low and others high? Hand Held Digital Thermometer. The University of Hawai'i 88-inch (2.24-meter) telescopecalled UH88, UH2.2, or simply 88 by members of the local astronomical communityis situated at the Mauna Kea Observatories and operated by the University's Institute for Astronomy.It was constructed in 1968, and entered service in 1970, at which point it was known as "The Mauna Kea Observatory". Thanks to our patented technology, SPIDER 230C lets you use an equatorial mount (not included in this kit, must be added separately) with at least 50 Kg payload capacity, by creating a compact radio telescope for 1420 MHz radio astronomy! The first one features a completely computerized design and it comes with a GoTo tracking system. The actual telescope you buy is also a consideration if you want to do deep-sky astro-imaging, but it will help narrow down your choices if you consider the 5th and last question first: Most people have no idea how much they will need to spend to buy a decent telescope that will let them observe most everything they are interested in. I have a nice spreadsheet I can send you that takes your detector parameters, star FWHM, aperture, and calculates the signal to noise ratio of a star image for a given exposure time. You can use a telescope to look at the Moon and bright planets, including Venus, Jupiter, Saturn & Mars. "@type": "Question", Building a mirror this large is challenging, even for use on the ground. It is specially designed to ensure a smooth and accurate performance of the telescope. This makes them a great choice for the imager who wants a plug-and-play telescope right out of the box. Technical Innovations - 6 ft Dome (Short), Technical Innovations - Pro Dome 15 ft Observatory, Explora Dome - 10' x 10' Square Building with 8' Dome (Ready to ship end of August 2022), Aphelion Domes - 7 ft Freestanding Observatory, Explora Dome - 8 ft Black Lined Dome (No Mounting Ring, Wheel Ring or Brush Seal Included), Shelyak - Dome Tracker (Dome) - Complete Kit for Dome, Shelyak - Dome Tracker (Roll-off Roof) - Complete kit for Roll-off Roof, Explora Dome - Explora Dome II 11.6ft. We . The RC700 is a complete observatory class telescope and direct-drive alt-azimuth mounting system, designed and engineered by PlaneWave. All Rights Reserved. On the lower end, this is primarily because the telescope will come with lower-end components, such as the focuser. } Celestron AstroMaster 80AZ Refractor Telescope was $249.99 now $149.95 on Amazon. Standard extension from 1 meter to 2 meters. There are several characteristics you will want to pay attention to when buying a telescope, including Aperture: An old adage about choosing the best telescope goes like this: "Buy the biggest telescope you can afford that you can set up by yourself and will use" While there is obviously a bit more to it than that, this is wise advice because it is a fact that the bigger the diameter of the primary optics, the more you will see. Direct: 781-871-8868 Of course, if you want a telescope that can be set up on the roadside at a moment's notice, portability and ease of use are paramount. Also, the other main advantage of this patented design is after sale support. If you're looking for the hardware required to perform research level astronomy, look no further- the pieces in this category are the very finest available. Very advanced instruments designed for use in observatories or other professional settings feature fused silica optics and direct drive motors on each axis for fast and precise positioning and movement of the telescope. I am doing research with a 0.4m SCT and an old camera, and while I can do useful work, there's always something interesting that's about a magnitude too faint for my system (or I can detect it but not with enough SNR to get good data). Check it out in their pre-owned tab. The mount is controlled by our RadioUniversePRO software through the ASCOM platform so if you want to use your mount, please verify that it comes with an available ASCOM driver updated for ASCOM Platform 6. Hi- I have had a place in Alpine which is about 25 miles southeast of Springerville since 1966. EdgeHD is Celestron's top of the line flat field aplanatic Schmidt-Cassegrain telescope series. H142-One provides professional technologies used by radio astronomers for radio astronomy research in a scientifically certified and easy to use receiver, perfect even with compact size antennas: its a 1420 MHz superheterodyne type radiometer/spectrometer, double conversion (type UP/DOWN) with 50 MHz received instantaneous bandwidth (RF=1.395MHz-1.445MHz) and 14-bit analog to digital converter. The folded light path allows for a short tube assembly even with relatively large apertures of 8" or more. },{ Our collection of used telescope accessories is so popular, however, that the best used astronomy accessories are scooped up quickly; sometimes within an hour of posting! 4. Amateur astronomers also buy telescope optical tubes so they can build a custom telescope system, with an equatorial mount and either a traditional tripod or placed on a pier in their personal observatory. $293.99. We will match any online price that we confirm as valid. Protos India.Net Telescope for Stars Moon and Galaxy Lo. We will go into each of the questions in greater detail further down the page, so scroll down if you need more information. PlaneWave PW2000 2-Meter Telescope - Observatory Solutions PlaneWave 2-Meter Alt-Az Telescope System *Call for Pricing The PW2000 is a high-performance, complete 2-meter observatory-class telescope featuring a direct drive altitude-azimuth (Alt-Az) mounting system designed and engineered by PlaneWave. Keeping in mind that the word "good" is subjective, there are a few simple ways to know if you have a decent telescope. You might be better off dropping $30K on a backside thinned CCD or CMOS camera + filters for a 0.5m telescope; that can get you from 60% quantum efficiency to 90% which is 1.5X improvement in sensitivity. The acronym OTA stands for Optical Tube Assembly. An alternative is to try folding down the rubber eyecup of the eyepiece when viewing with glasses. The main mirror comprises 492 smaller hexagonal mirrors - it . There is a lot of good science that can be done. 3. Not gonna happen unless you catch someone at just the right moment needing to sell for rent money. Telescope Meade LS6 ACF. 800-483-6287 SPIDER MarkII radio telescope is the result of 10 years in research by PrimaLuceLab engineering team that designs, develops, assembles and tests in-house all our radio telescopes. UH 88 website Institute for Astronomy We only send interesting emails and will never sell your data. Ritchey Chretin telescopes come in a wide variety of prices. Their long focal lengths make them particularly good for for distant targets such as galaxies and small nebulae. In this article with step-by-step guide, by using a 3 meter diameter SPIDER 300A radio telescope, we see how to detect radio waves coming from the, Is it possibleradio astronomy at school? Why are refracting telescopes not ideal for professional astronomy. In May, the country's Science and Technology . We only send interesting emails and will never sell your data. Collimation is also important on a Ritchey-Chretin, and entry-level RCs may be somewhat difficult to collimate for precision imaging purposes. Consumer-grade telescopes can have imaging defects such as color fringing a kind of chromatic aberration that happens when the lens is unable to bring all wavelengths of color to the same focal plane. "@type": "Answer", For professionals, advanced students, and serious amateurs, standard telescopes designed for night sky viewing have drawbacks that interfere with obtaining highly detailed images, particularly for deep sky objects. To learn more about telescopes, check out our Telescope Knowledge Center filled with information on choosing the right telescope to meet your specific needs. Up until that time, telescopes required a heavy equatorial mount that produced a financial or weight barrier for some otherwise enthusiastic budding astronomers. For the best experience on our site, be sure to turn on Javascript in your browser. You can buy a manual equatorial mount (no motors) and use it just fine for visual astronomy, but if astro-imaging is in your future, we recommend you buy a telescope on a computerized equatorial mount. Details: The item must be the identical item, brand name, size, weight, color, quantity and model number. Read our 101 article or get in touch. The telescope and instruments are designed to operate from the near ultraviolet to the near infrared (320 to 1700 nm), and offer some unique or . Share. If the telescope in question is for a child and you are not sure how long their interest in astronomy will last, it is perfectly reasonable to choose a kid's telescope on the lower end of the price scale. While there are still equatorial mounts on the market that have motors available for both axes (a minimum requirement for astrophotography), computerized mounts are more plentiful than ever and can be an economical choice since you won't have to worry about adding motorization to your manual mount later on. Celestron - PowerSeeker 127EQ Telescope - Manual German Equatorial Telescope for Beginners - Compact and Portable - Bonus Astronomy Software Package - 127mm Aperture. The focal length is the distance, usually measured in millimeters, between the primary mirror or lens and the point at which the image comes to focus. zhizuka Telescope Zoom 90X HD Focus Astronomical Refrac. He did my 400 mm Rumak to a high standard. You will find Observa Dome systems in the world's highest accessible observatories14,274 feet above sea levelthe lowest areas80 feet below sea levelas well as some of the hottest climates and most tumultuous weather extremes. I like their design. Our inventory is updated daily and ready to ship worldwide today. There were a number sold in the 1970s which are pretty obsolete by today's standards. An equatorial mount is designed to track the stars as they move across the sky due to the Earth's rotation. NexDome is the NexGeneration observatory that was designed with paying attention to problems and shortcomings of similar class observatories. This way SPIDER MarkII radio telescopes provide unmatched performance by standard off-the-shelf antennas that are not designed for radio astronomy: better tracking and pointing precision, higher sensitivity, dedicated radio astronomy software, better engineering quality and great italian design! We will match any online price that we confirm as valid. These old-time "solar filters" have been known to fall apart in mid-use because the sun actually melted the glue or other adhesive holding them together! The price for an item/offer must be listed and valid at the time of match. The reflecting surface of this antenna (the primary reflector) is composed of an aluminum mesh with 34 mm holes for optimum reflectivity of radio waves with frequencies up to 5 GHz.
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