Dobsonian vs cassegrain


In the 1960s, John Dobson's simple new telescope design revolutionized the hobby of amateur astronomy and brought "sidewalk astronomy" to the masses. Dobsonian telescopes' larger apertures me. Never having owned either, I turned for information on them to Rod Mollise, author of the book Choosing and Using a Schmidt-Cassegrain Telescope and Grant Gussie, a Canadian astrophysicist and amateur astronomer. It has the computer and motors built into the mount. An Schmidt-Cassegrain telescope has features of both a refractor (eyepiece at the bottom) and reflector (uses Maksutov-Cassegrain telescopes, like the Schmidt-Cassegrain telescopes, are catadioptric telescopes (a telescope with lenses and mirrors). CPWI Software. The price difference isn't that large because I was looking into GoTo models for either, for example Orion Skyquest XT8g vs. A Dobsonian is a particular type of Newtonian reflecting telescope. $649. Finally, because Schmidt-Cassegrain telescopes are so popular there are loads of accessories available that will allow you to do visual astronomy as well as multiple kinds of photography with everything from your smartphone or point-and-shoot camera to a DSLR or dedicated astronomy camera. You know the difference between a reflector telescope and a refractor telescope. It you're serious, then find you local astronomy club. Good reviews from owners. The difference between the Schmidt Cassegrain and the Maksutov-Cassegrain is in the shape and size of the corrector plate (lens) at the top of the telescope. View More Stories… The Dobsonian telescope is perfect for budding astronomers because they're powerful, easy to use, and very affordable. For most observers, it is not too long or heavy to move, yet it still has enough aperture to show thousands of deep-sky objects. The Dobsonian ones are easier to use once they are set up, and hence easier for just viewing the night skies. This greatly reduces the cooling time of a telescope larger than 8” in diameter without using an extra fan. 25" CPC) or a truss dobsonian (Orion Skyquest XX16g) which would you choose? Mar 22, 2011 · Dobsonian/Newtonian telescopes have a big advantage over telescopes with lenses such as refractors and Cassegrain telescopes, as mirrors are a lot cheaper to make than lenses. Celestron’s FREE planetarium app is an astronomy suite that redefines how you experience the night sky. 99 $ 649. Nov 28, 2019 · This wiki has been updated 21 times since it was first published in May of 2015. I'd go for the aperture A Schmidt Cassegrain is a catadioptric telescope (a telescope with lenses and mirrors) that uses a combination of mirrors to squeeze an optically very long telescope into a short tube. Manufacturer of large aperture portable deep sky telescopes. Like Schmidt-Cassegrain telescopes, Maksutov-Cassegrain telescopes are suitable for some applications, from terrestrial observing to astrophotography and stargazing. Com : Orion SkyView Pro 8 GoTo Reflector Telescope : Reflecting Telescopes : Camera & Photo," accessed May 12, 2018, https://www. Orion 8974 SkyQues6t XT8 PLUS Dobsonian Reflector Telescope Kit. Random quote "The thrill of actually seeing detail had me so excited I was running all over the sky, as rapidly as a 6 year-old to a Christmas tree. Conversely, a Schmidt-Cassegrain uses a Cassegrain mirror—which means you view from the rear of the scope—and a Schmidt corrector plate, which means the scope cools down much faster than a Maksutov variant, although still slower than a refractor or a reflector. The simplicity of the Dobsonian, however, requires no such period of acclamation. The view in Newtonian reflectors is also inverted, or rotated at an angle depending on the eyepiece angle with respect to vertical. FREE Shipping. Here is the optical scheme for a classic Newtonian reflector. My 2nd telescope. Buy maksutov cassegrain telescopes at Astronomics. Orion offers telescopes for every level: Beginner, Intermediate, and Advanced. For example, which has more light collecting capability: an ETX-125 or an 8" LightBridge? Which one will allow for greater magnification? Any information would be appreciated. Cassegrain Optics: With this type of Optical Tube Assembly you have the choice between a traditional Equatorial mount or some type of fork mount. Shop with Explore Scientific for high quality eyepieces, telescopes, binoculars, and microscopes backed by a warranty you can trust. Make your selection from a wide array of high-quality Cassegrain Telescopes from name brands such as Meade, Celestron, Takahashi and many more. Stay out of the department stores. Should come with a collimation laser tool. The secondary mirror can be curved, like a Cassegrain or flat, like a Newtonian, depending on the reflecting telescope design. Control your telescope via integrated WiFi using the free Celestron SkyPortal app for iPhone, iPad, and Android devices The Astro Fi 125mm f/10 Schmidt-Cassegrain telescope with StarBright XLT coated optics provides outstanding views of the Moon and planets, as well as bright deep space objects beyond our Solar System. Because of its very low coefficient of thermal expansion, Pyrex glass is less affected by changing temperatures. Plus they can be a May 08, 2014 · Dobsonian vs SCT is there much difference visual observing That's not to say the Schmidt Cassegrain was bad, but I felt it lacked the ''pop-out'' element of If you want to know how come Maksutov-Cassegrain (or any Cassegrain deritvative, for that matter) fit that much of focal length into short tube, then I can answer that. With everything from cheap department store telescopes to computerized models and specialized APO refractors, how do you choose something you’ll be able to enjoy for years with without spending a fortune? From the Manufacturer. As an example In the Meade line, the LX200 is an SCT and the ETX series is an MCT. The light enters through a thin aspheric Schmidt correcting lens, then strikes the spherical primary mirror and is reflected back up the tube and intercepted by a small convex spherical secondary mirror which reflects the light out an opening in the rear Cassegrain telescopes combine right-side-up viewing with large apertures, so you’ll get sharper, clearer images of all those far-away worlds you’ve been longing to witness with your own eyes. I'm not sure about the collapsible 10", but my solid tube dob needs minimal collimation after driving 250km. However in its standard configuration it does not track the sky, so you will need to PUSH the telescope along to keep objects inside the eyepiece. Astronomics 40th Anniversary AT102ED Giveaway; Two New Scope Series From Meade Apr 09, 2013 · Buying your first telescope can quickly become a daunting task when faced with so many choices and unfamiliar terms. However, I'm about to consider it for two reasons size and tracking. this lens vs that lens. Help? Newtonian vs Cassegrain?? >A Dobsonian is nothing more than a Newtonian on a cheap altazimuth It depends on your priorities and your preference. They're better for taking photographs. I'm just wondering what you guys think of the pro's and con's of either type of scope . Dobsonian vs Cassegrain (Differences) The Dobsonian and Cassegrain are some of the most popular types of telescopes. The telescope shown at right is a 10 inch Dobsonian reflector. The instrument included mirrors, which may have been metal. They cannot be beaten for visual deep-space observing and are perfect for those who want a large aperture at a low price, with no frills. Take control of your telescope! Download the Celestron PWI Telescope Control Software. Just like a mirror. More experienced astronomers will find the SkyQuest XX16g Go To Truss Tube Dobsonian telescope provides the ultimate in performance and astronomical viewing. A Dobsonian telescope is a Newtonian reflector mounted on a simple yet stable alt-azimuth (lazy Susan style) mount. Dobsonian Telescopes. Mar 07, 2018 · What are the advantages and disadvantages of Schmidt-Cassegrain Telescopes? They are among the most popular telescopes among amateur astronomers, SCT's have been around for decades in the Help? Newtonian vs Cassegrain?? Showing 1-22 of 22 messages. 10" Dobsonian or 8" Cassegrain - posted in Beginners Forum (No astrophotography here - please read the forum description): Firstly, I have to say I jealous all of you living in US and EU. amazon. These telescopes are named for their designer, John Dobson, who sought to build a low cost large aperture telescope. Celestron's NexStar 5 SE computerized telescope combines excellent optics and easy computerized GoTo tracking in a convenient portable size. The Dobsonian design is a Newtonian Reflector that sits on an alt-azimuth mounted base and is based on the idea that large optics can be inexpensive and very easy to use. Before the introduction of the Dobsonian by John Dobson, the vast majority of amateur telescopes consisted of small telescopes with primitive mechanics - barely enough to see the polar caps of Mars or the rings of Saturn. May 06, 2015 · Let's assume you have spent some time reading the basics of selecting a telescope. Whether you are an amateur stargazer looking for a little more power or a professional astronomer, we've got you covered with our comprehensive selection of telescopes, including everything from the basic moon watcher up to computer controlled nebula viewers that can find and track distant celestial bodies. Perhaps the most portable of most Dobsonian scopes. It has up-down, and left –right movements which make pointing the scope very easy. May 12, 2018 · Sources: Amazon. Jul 04, 2015 · A good first time Dobsonian and great for kids due its relatively short height. Dobsonian vs Cassegrain I've been doing alot of reading on the Dobsonian Telescopes and they get alot of praise, and are very popular. The latter is using the best of both designs. Takes me about 1/4 the time to set up and collimate the dob vs setup and align a mount for an SCT. A reflector telescope typically has a big empty hole at the "open" end of the telescope and a big bowl-shaped mirror at the bottom. Only 11 left in stock - order soon. The ACF design reduces astigmatism and eliminates diffractions spikes found in classic RCs. Astronomy and science equipment for all skill levels and applications including professional telescopes and child friendly telescopes. Get binoculars and books if you can't spend at least $300. The Dob is also less expensive. For Maks with a separate secondary, there are three adjustment screws for collimation, just like on SCTs. From 42West. 4. Meade Instruments: A world leader in the manufacturing of Telescopes, Solar Telescopes, Microscopes, Optics, Binoculars, for amateur astronomers and hobbyists May 26, 2016 · An 8-inch (200 mm) f/6 Dobsonian with a focal length of 1200 mm is an excellent workhorse telescope, even for beginners. OPT stocks a wide array of high-quality versatile, inexpensive, and easy to use Dobsonian telescopes. Schmidt-Cassegrains If portability is important to you, you might want to consider a “catadioptric” scope such as a Schmidt-Cassegrain or Maksutov-Cassegrain. Jan 21, 2014 · I never tried the Cassegrain telescope due to price before. Oct 11, 2014 · The Schmidt Cassegrain telescope combines the best of the refractor and reflector telescopes by using both lenses and mirrors in a compound system. However, the differences in design between the two mean that Maksutov-Cassegrains function slightly differently than SCTs. Jul 26, 2005 · Ok so you guys are saying that I should set my eyes on a dobsonian rather than a schimdt cassegrain? I had the notion that the schmidt cassegrains where the best scope you can get? That they were the most powerfull? If you had the choice of buying a 10'' schmidt cassegrain or a 12'' dobsonian which would you choose? Refractor Classical Cassegrain Newtonian Prime-focus Newtonian Refractors vs reflectors. And this one is for a Maksutov-Cassegrain. With the Dobsonian mount you will get very easy to use, very easy to manipulate and move the telescope and very easy set up/tear down and transport. I've read that Schmidt-Cassegrain are great for both activities. Reflectors reflect. As I have been using my 10 inch Dobsonian telescope, the z10, I saw Jupiter very sharp and clear when I increased the magnification. If a person has the money to either buy a Schmidt-Cassegrain (Meade LX200 8" ACF, Celestron 9. Cassegrain Reflectors and Cassegrain Catedioptrics work in different ways, the former utilizes your classic Reflecting technology and mechanisms. Both types of Cassegrain telescopes feature a front corrector lens that ensures sharp images. As you can see, Maksutov-Cassegrain folds the light path inside the tube Dobsonian vs Reflector [Difference Between the Telescopes] September 26, 2019 May 2, 2019 by Astronomy Scope Please note that this post may contain affiliate links and any sales made through such links will reward me a small commission – at no extra cost for you. Cassegrain telescopes are catadioptric systems, meaning that they use a combination of lenses and specifically shaped mirrors to form an image. A 6" Dobsonian is a great first telescope. 5″ aperture and 900mm focal length. Omni XLT telescopes include 4" achromatic and ED refractors, a 5" Schmidt-Cassegrain (SCT) and a 6" Newtonian. Be aware that you don't have to buy the whole package at once. A GOTO computerized telescope is the most popular option. Straight-through finder scopes also invert the field of view. Bringing you great new articles, posts and fresh content to equip your creativity. They are adaptable for all sorts of activities besides astronomical viewing. Dobsonian refers to the mount (not the tube). Dec 11, 2019 · Find the best telescope for your needs and budget in our review of Meade vs Celestron vs Orion. com/Orion Dobsonian is a type of mount, whereas Schmidt-Cassegrain and Newtonian are different configurations of the optics inside the telescope. Find the best telescopes for deep sky viewing at any budget with our guide to deep sky telescopes and accessories. Oct 11, 2008 · welcome to the forum, first of all you can take good picture through anytype of telescope just look at the gallery in here, The main problems with newts for looking through is the eye piece moves about alot! large than 8'' newts tend to need a stool to stand on for some positions however, dob's dont have this problem but they are not any use for imaging anything but the moon and or planets Jan 21, 2014 · I never tried the Cassegrain telescope due to price before. What is the best computerized telescope for me? There are two types of computerized telescopes: 1) motorized (GOTO) and 2) non-motorized. For first timers, the standard advice is still valid. Dobsonian-mounted reflectors have lower price tags than their equatorial counterparts, starting in the mid-$300s for a 6" Dob. True to their name, reflector telescopes use mirrors to reflect the image back to your eyes. A catadioptric optical system is one that employs both lenses and mirrors to focus the image. The Sky-Watcher 10” Dobsonian features a primary mirror made of Pyrex glass. Because the Maksutov uses a lens type "spot" it suffers from aberration (different colors come into focus and different focal lengths), making this type of telesc Beginning astronomers appreciate the affordability of telescopes like the lightweight Go Scope II 70mm refractor travel telescope for the budget-friendly price of $89. Nighttime, daytime, and deep space - all kinds of objects in the sky and right here on Earth are visible with these scopes. Oct 22, 2012 · Light path through a Schmidt-Cassegrain: Light path Through a Maksutov-Cassegrain. Larger telescopes, such as the Schmidt-Cassegrain were reserved for the wealthy. Finally, I'll add my own piece of advice in this electronic age: Use caution when buying any computer-controlled telescope costing less than about $1000. May 11, 2017 · Put simply, the cassegrain ones have a "folded" light path and hence are shorter and easier to move around. Perhaps the most popular catadioptric among amateur astronomers, the Schmidt-Cassegrain Telescope (or SCT) uses a combination of spherical primary and secondary mirrors, along with a corrector plate (lens) that helps correct for aberrations. 99. We compare the best in each category. It is a catadioptric telescope that combines a cassegrain reflector’s optical path with a Schmidt corrector plate to make a compact astronomical instrument that uses simple spherical surfaces. Celestron NexStar 6SE or similar 6" SCTs. Their designs take advantage of a folded optical path that reduces the size of the telescope, making them easier to produce and transport. Shop B&H for our huge inventory of Catadioptric (Cassegrain) Telescopes from top brands like Celestron, Meade, iOptron and Vixen Optics, at great prices. Words like Schmidt-Cassegrain and Dobsonian do not sound like a foreign language to you. a large Dobsonian telescope under a dark sky Astro-photography - 8 inch Schmidt-Cassegrain vs 10 inch Newtonian. We are your source for astronomy telescopes, eyepieces, astroimaging cameras and imaging accesories, telescope mounts, & more! Cassegrain Telescopes are also reflector telescopes that are is designed with a combination of concave and convex mirrors, to reflect light. 99. Dobsonians. 90mm aperture and 1250mm focal length Maksutov-Cassegrain optics for fantastic celestial and terrestrial views, especially at higher powers. Nifty little 90mm (3. The Newtonian Dobsonian has a very simple, inexpensive mount, does not have a drive or GoTo capability, and has no Schmidt corrector plate. The Schmidt-Cassegrain telescope (SCT) uses a combination of mirrors and lenses (catadioptric optics) to fold the optics and form an image. SkyPortal App. That's not hard. The standard equipment tripod and mount feature easy no-tool setup, and the package even includes a student version of "The Sky" planetarium software for your computer. Cassegrain was a metal founder and sculptor who worked for France’s king. Many reflecting telescopes also feature a secondary mirror, such as Ritchey–Chrétiens, Dobsonians, Dall-Kirkhams, and many other styles. Orion Telescopes carries both Schmidt-Cassegrain telescopes and Maksutov-Cassegrain telescopes in a variety of sizes, all of which provide excellent image quality and all-around viewing capability. From our entry-level beginner telescopes for amateur astronomers to our Dobsonian telescopes to our most advanced Cassegrain telescopes and accessories, you can find the best telescope for you. Any of these would make good novice/intermediate telescopes. The refractor is the most popular telescope design in the world due to its ability to maintain alignment better than almost any other telescope. Question - Schmidt Cassegrain or Dobsonian? If have the opportunity to buy a telescope after saving for a bit. The Schmidt-Cassegrain design is a high quality reflecting telescope design, producing top-notch Cassegrain Telescopes that we, at OPT, are happy to offer. 5" Standard Maksutov-Cassegrain would be hard to beat. Reflectors. A Dobsonian telescope ()Thinking of buying a telescope? I recommend buying a Dobsonian telescope Unless you would be using the telescope to take pictures with an attached camera, then the best telescope (and a "best buy" in the sense of "bang for the buck") is a Dobsonian telescope. Maksutov-Cassegrain vs Schmidt-Cassegrain. Especially if you're on a limited budget, you could start out with a Dobsonian, then remount the scope on an equatorial if you get into astro-imaging or prolonged, high magnification observing. Advanced Coma-Free (ACF) Building from a classic RC design, Meade created a new design with coma-free pinpoint star images and flatter field. Like all Dobs it has great light gathering capability and a wide field of view. The catadioptric type of telescope dates to the 1930s, but the origins of catadioptric Schmidt-Cassegrains began about 1672, when Sieur Guillaume Cassegrain created the Cassegrain telescope. The eye piece is 3 feet from the ground. 4 out of 5 stars 70. Refractor and Cassegrain telescopes, when used without a diagonal (which isn’t usually the case), produce an inverted (upside-down) image. Dobsonian - posted in Open Chat: I am looking to upgrade from my ETX-70, but I don't know how a Maksutov-Cassegrain compares with a Dobsonian. 5. Yet a quality Dobsonian scope of this size can cost less than $500. Two main Cassegrain Telescope designs you will most likely come across are the Schmidt-Cassegrain and Maksutov-Cassegrain Telescopes. We are your source for astronomy telescopes, eyepieces, astroimaging cameras and imaging accesories, telescope mounts, & more! I am narrowing my choices down to a 8" Dobsonian or a 6" Schmidt-Cassegrain. It is a Newtonian scope on a simple sturdy box-like mount. For the affluent novice, a Stellarvue or Tele Vue APO refractor in the 90mm to 105mm clear aperture range, or a Questar 3. It will actually have a bit more light throughput than the Schmidt-Cassegrain since the central obstruction (secondary mirror and spider) is smaller and there is no need for a corrector plate and yet another set of light losing optics, namely a diagonal. Aug 27, 2008 · Maksutov-Cassegrain vs. If portability and ease to set up is your priority with an interest in Astrophotgraphy i would definetly ask you to get an 8 or a 11″ SCT. Dobsonian mounted telescopes are almost always Newtonian due to the Newt's ideal placement of the eyepiece. Because we sell direct, we can offer you tremendous value at a great price. More than half a century later, Dobsonian telescopes are still a favorite among experienced stargazers for providing the hands-down best value-per-dollar on the telescope market. 5") aperture Maksutov-Cassegrain telescope provides long focal length performance in a conveniently compact instrument. dobsonian vs cassegrain