difference between 70mm and 80mm telescope

It's easy to find terrestrial objects by sweeping along the horizon to the correct spot, and then up or down as needed. Meade vs Celestron [Which Astronomy Manufacturer Is Best?] The tube can be angled to help it slip through the door but a short tube is like the Pronto just fits so much easier. Otherwise, I'll shorten the tripod and use a 5-gal bucket as an observing seat, like I do with the XT4.5. Certain features and details of these objects start to stand out and may offer more for you to observe. 200x should be possible if you can mount it on a sturdy tripod. Highest Useful Magnification. Incidentally, I've also owned two very good 55mm f/8 and 70mm f/8 fluorite doublets from Celestron/Vixen over a period of many years and compared them often. If you plan to travel by public transportation (most definitely including airplanes! Also beware of teeny-weeny eyepieces. Aperture, or the diameter of the lens or mirror, also plays a significant role in determining the amount of light that the telescope can gather and therefore the level of detail visible in the image. Well, for this reason, we have created this article that will give you a visual tour of all the common telescope apertures so you can make an informed decision. Another great entry-level option. Hobby Killers: What Telescopes Not to Buy - Sky & Telescope - Sky Furthermore, telescopes with larger apertures can discern fainter celestial entities that would remain hidden when using a telescope with a smaller aperture. Generally, 70mm telescopes are less expensive than 80mm telescopes. The highest useful magnification per inch of aperture is 50x, meaning a 70mm aperture can only go as high as 135x magnification. Celestron 21035 70mm Travel Scope Review - Get a Better One! If portability is your top priority, a 70mm telescope may be the better choice. Not only could you potentially save some money by choosing a 70mm, but itll definitely get the job done for casual viewers of the night sky. (An Accurate Answer). The Galilean instrument, attributed to its creator Galileo Galilei, is an example of such a telescope. Telescope Lenses Explained: A Comprehensive Guide, What Can You See with a 10mm Telescope? That means the aperture of your telescope is the main bottleneck that determines how good of an image you can actually get to. . 70mm vs 80mm Telescope: Which One is Better? Pro tip: Consider the type of objects you want to observe before choosing a telescope. I have a 80mm F/11.3 which has the same focal length as your 70mm F/13. Conclusion I couldn't find any difference. But it is absolutely not true that a 60-mm refractor is almost the same as an 80-mm refractor! Second, binoculars. Remember, theres a chance that an 80mm telescope will be a little more expensive, but it also has better magnification capabilities. Its crucial to remember that magnification capacity isnt the sole aspect to evaluate when choosing a telescope. The biggest difference between the two caters to minor details of your viewing experience, such as refining surface details on the moon. Achromatics use a doublet (2-element) lens while APOs use a triplet (3-element lens). you can run the numbers in any of the online calculators, like astronomy.tools , using the exact focal length/aperture, since similar focal length/ratio will only get you generalized answers in general, i would prefer the slightly smaller 70 for the benefit of weight/size reduction, all else being similar. There isn't much difference between the qualities of these brands, but the main difference only lies in cost and customer . Understanding Camera Zoom & Lens Focal Length - Nikon USA A 20% increase in aperture -- as going from a 70 to an 84, or an 80 to a 96 -- is quite obvious to an experienced user. Then this blog post is for Read more, When we think of the best telescopes, we often conjure images of long tubes with lenses and mirrors. If you were to ask any astronomy enthusiast that has experience with telescopes, theres a good chance theyll suggest going with an 80mm telescope. The 70mm and 80mm Gskyer telescopes are some of . It's got more aperture, meaning brighter images and more resolution and a longer focal length for a higher magnification with any given eyepiece. 80mm vs 90 mm - posted in Beginners Forum (No Astrophotography): I am currently using a Celestron 80 mm Powerseeker as my grab, and go Refractor..I was looking at the Orion AstroView 90mm Equatorial Refractor as perhaps a replacement scope..Im not unhappy with the 80, and the CA on bright objects is not bad at all for a scope in this price range..My Etx 60, and 80 are much worse..Moon views . With a 70mm telescope, you will easily be able to see every planet in the Solar System. A persons first telescope can make or break their stargazing experience for life. Besides that they offer the same specs, so if you can find either on sale, you cant go wrong. Because of that, the magnitude is how easy it is to look at a star from Earth and what kind of optical device do you need to observe it. What can you actually expect to see with your eyes?. This small difference shouldnt deter you from considering a 70mm, as some casual viewers consider an 80mm to be a little overkill for their needs. For example the Orion EON 110ED f/6.0 Apochromatic Refractor sold for about $2000, a price comparable to a triplets . Many telescopes offer a higher, more refined aperture, but this can also come with a higher price tag. An 80mm will also provide additional clarity when observing celestial objects at a further distance. However, keep in mind that a larger telescope may be heavier and more difficult to transport, which could be a drawback if you plan to take it with you on the go. The main difference between the two is their telescope aperture size, which affects the amount of light they can collect and their resolving power. I have had the chance to test the Orion Observer against its direct competitor, the Celestron Astromaster 70AZ and I found the optics of the Observer better by a very small margin. Known to be a prominent factor of any telescope, the aperture pertains to the clarity and brightness of what youre able to see. The ESSLNB 400x80mm is a decent entry-level travel telescope for its price and tech specifications. 80mm vs 90 mm - Beginners Forum (No Astrophotography) - Cloudy Nights A Guide to Observing the Night Sky. So, whats the difference between a 70mm vs. 80mm telescope? Furthermore, if you want to start astrophotography with a telescope, a larger aperture can make all the difference. . For going out to your back yard, there's little practical difference between 5, 10, or 20 pounds. Check the weight. Then go there with a spotting scope, zoom eyepiece and a tripod. For my backyard and high power use, Im waiting my custom made 130 mm f19 ED refractor My mighty Kowa will come with me during my Heavens Desert Tour this summer. If youre using a 70mm aperture, you should be able to find and see many celestial objects just fine, but they may not have as much detail as an 80mm. Common aperture sizes for telescopes range from 50mm to over 300mm. If you are interested in the Gskyer AZ70400 or AZ80400 refractor telescopes, then this is the video for you. The aperture in a telescope is the size of the frontal lens or mirror, the one that captures the light. Here are some photos that you might find useful to understand what you can expect to see through the lens. These specifications alone could make or break a purchase decision for a dedicated astronomy enthusiast. This is not recommended for shared computers. If youre looking for a portable and affordable option for casual stargazing, a 70mm telescope may be a good choice. Telescope mounts are support structures that hold the telescope and allow it to move smoothly to track celestial objects. Generally, an 80mm telescope will be more expensive than a 70mm telescope due to its larger size and better optical performance. When considering the value for money, a 70mm telescope is an excellent option for novices just beginning their astronomy journey, eager to explore the night sky without excessive spending. Here's the short version of the review. Closer to 1" is usually better, although dither and drizzle will help recover somewhat. Copyright 2023 Web of Optics | Maintained by Optic Enthusiasts. It plays a crucial role in determining a telescopes magnification power and field of view. As you can see from the table above, an 80mm telescope has a slightly higher maximum useful magnification than a 70mm telescope. Your experience level with telescopes can also play a role in your decision. I've owned all 3 sizes of refractor and all were good scopes in their own right. When it comes to optical performance, the main difference between a 70mm and 80mm telescope is the amount of light they can gather. In the debate between 70mm and 80mm telescopes, focal length is a key factor to consider. 80mm vs 90mm vs 100mm - visual use only - Stargazers Lounge Celestron Travel scope 70mm vs 80mm? : r/telescopes - Reddit Another practical effect of aperture is to calculate the maximum limiting magnitude your telescope can reach. Yes, a 70-mm refractor is almost the same as an 80-mm refractor. This means that an 80mm telescope can provide a slightly closer look at celestial objects. Consider factors such as portability, cost, and desired magnification when making your selection. The Schmidt-Cassegrain apparatus serves as an example of this kind of telescope. You currently have javascript disabled. The Meade Instruments 70mm telescope is the best and convenient Telescope to use. If all you care about is taking the telescope outside to your backyard, packing it in a car, or carrying it 100 yards from a car to an observing site, then there's no point in getting anything more portable. This aperture is one step above 70mm and is the optimal choice for those who are looking for finer details in their image quality. Achromatic vs Apochromatic refracting telescopes. - Little Astronomy ), you'll get a good refracting telescope on a good mount - with the bonus of fitting in a backpack. I was quite shocked. Other factors such as portability, ease of use, and overall image quality should also be taken into account. I have a SW72mm ED. To calculate the magnification, simply divide the focal length of the scope by that of the eyepiece. quick question about 70mm vs 80mm aperture - Cloudy Nights The entire optical chain that you are going to use (From the telescope to your eyeball) begins with the lens at the front of your telescope, and its diameter, also referred to as the aperture is whats going to determine how much light is captured and enters the body of your telescope for processing it. Ultimately, the choice between a 70mm and 80mm telescope comes down to personal preference and intended use. Do Refractor Telescopes Need Collimation? It isnt necessarily a massive jump in viewing quality, but its enough to deliver a noticeable difference that many people prefer over a 70mm. Plus, you won't get the color fringing of achromatic refractors . The exception to the rule is if you are looking specifically for a travel/camping telescope. Another factor to consider is the portability and weight of the telescope. I am not big on choosing a scope based on WOWs. If you plan to take it camping and on field trips regularly, then get the TravelScope. Elena is a Canadian journalist and researcher. An 80mm will also provide additional clarity when observing celestial objects at a further distance. Dont be fooled by any comments online saying one is supreme over the other, as youll find many experienced users say theyre pretty happy with 70mm. I appreciate your help. let's say we're comparing the two with similar focal length and focal ratio and mechanism. Strip out the camera, binoculars, and solar filters, and use a smaller tripod, and I could reduce that to 9 pounds, or 4 kg. A long tube-shaped device featuring a bunch of Read more, Backyard astronomy is a popular pastime across the world. Seeing these objects in outer space is cool enough as is, but by using an 80mm telescope, you get much more than that. You will also be able to take a great look at the Moon and clearly distinguish most of its recognizable features and craters. Regardless of how you look at it, an 80mm telescope is the best choice if youre looking for more detail any time you view nearby celestial objects. Are you considering a 70mm or 80mm telescope? What can I see with an 80mm f/5 refractor? - Cloudy Nights Focusing is the next step, where the secondary mirror or lens directs the gathered light towards the eyepiece. The two included eyepieces are low-power, but the TravelScope can support a higher magnification, so you might want to consider getting a 1.5x Barlow lens to increase their power. In this section, we will explore what magnification is and how it differs between 70mm and 80mm telescopes. They are commonly used to observe deep-sky objects like galaxies and nebulae. Confirming the superiority of a good 80mm over a ditto 70mm or 55mm. Eyepiece Size - ideally you want both 1.25 and 2. All registered. Both can provide a satisfactory experience, but the 80mm offers better image quality and magnification. Why Do Telescopes Use Mirrors Instead Of Lenses. Read more, A telescope is a powerful tool that can provide breathtaking views of the cosmos. In practical terms, all this is going to mean a better experience when it comes to observing planets specifically. Generally speaking, the larger the aperture, the better the telescope will perform. When I had a Pronto, I mounted it sidesaddle, like the AT-72ED in this photo (and the WO-80mm at Canyon de Chelly.) Best Travel, Portable Telescopes - Little Astronomy With a typical pixel size of around 4um, you would have 1.47"/px with the 80mm F/7 and 1.96"/px with the 70mm F/6. Side by side looking at my picks of sky objects. An 80mm telescope can amass approximately 60% more light than its 70mm counterpart, yielding brighter and more defined images. Here are some photos comparing what different telescopes with a wide range of apertures can do. Even 0.5 kgs less is an improvement, try to tour Mauritanian Oasis or Egypts White Desert and than everybody can understand that portability depends on scope, not mount. That means that if you have a telescope with a 100mm aperture, you would calculate it by doing: maxMag = 100 x 50 = 500. The 90mm W/O is built like a tank and kinda heavy. To get a telescope's theoretical maximum 50 per inch of aperture, you use an eyepiece whose focal length in mm is half the focal ratio: 2 mm for an f/4 scope and 7.5 mm for an f/15 scope. When it comes to choosing between a 70mm and an 80mm telescope, there are several factors to consider. Jon: Add a Comment. The erect image diagonal allows for right-side-up viewing ideal for terrestrial subjects but can also be used for celestial objects. from a 102mm without a much more massive tripod. On the other hand, those who prioritize image quality and clarity may prefer an 80mm telescope. Basic astrophotography can be done with either, but advanced astrophotography requires specialized equipment. I kept the Japan scope because it had beautiful "teakwood" legs. The focal length on the Skywatcher is 510, the Celestron is 400. You should be able to see some of the beautiful mixes of colors in nebulas, specially the most prominent ones like Orions Nebula. 70mm telescopes are entry-level products. Required fields are marked *. Usually, 70mm telescopes have a focal length ranging from 400mm to 700mm, whereas 80mm telescopes have a focal length between 600mm and 1000mm. My personal recommendation is that for a camping telescope you shoot for an aperture between 70mm and 120mm (2.7 to 4.7). Our guide will provide valuable insights and assistance in addressing any doubts about choosing the perfect telescope for your stargazing escapades. Stellarmate vs Asiair: Which is the Best Astrophotography Software? I don't know which mount you are using. Refractor Telescopes | B&H Photo Video They can be outgrown really fast. quick question about 70mm vs 80mm aperture - Cloudy Nights Most important, most spotting scopes offer straight-through viewing, and almost all the remainder come with 45-degree prisms rather than the 90-degree prisms that are standard for astronomical telescopes. The Barlow Lens was invented by the English mathematician and physicist Peter Barlow (13 October 1776 - 1 . For small birds, a 500mm is a big help. Dont overthink these numbers too much, again, these are only approximations to understand the capabilities of your telescope. Ultimately, the best telescope is the one that suits your needs and preferences. Surpassing these magnification thresholds may cause image fuzziness due to atmospheric disruptions and the telescopes constraints. If youre a beginner, a 70mm telescope is a good choice because its easier to use and less expensive. 3 Reviews. Surely 80mm is the standard but if it's not that much different isn't it better go with a smaller scope? You may not have the ample funds to do so in person but Read more, What picture comes to your mind when someone mentions the word telescope? 70mm (2.8) 400mm. Using a good spotting scope one can reach far far locations and will remember that experience for all your lifetime. And when you go to a site like the above with ZERO light pollution, ZERO humidity, ZERO turbulence, I can guarantee that you will immediately forget comfort of view, 90 degree mirrors, dovetail mount, etc, and you will only think to enjoy the wonderful views of the heavens! An 80mm telescope has a larger aperture, which means it can gather more light and produce brighter, clearer images. If the scope will need to go on an airplane or bus, small and compact is very important. A Guide to Observing the Night Sky. No matter how fancy or expensive accessories you put on it, if theres no more light (information) to improve your image, theres nothing to be done. Not sure what one to get, or if there is much of a difference between them? Lets get to what you came here for. On top of that, the aperture will also determine another very important number for stargazing, the maximum useful magnification. That includes a camera and binoculars. And they are correct. 8. The outside planets beyond the asteroid belt will be seen mostly in one single color and it is unlikely you will be able to capture any of their shades. However, Read more, Collimation is the process of aligning the optics of a telescope to ensure that it is working at its best. The tube is longer, in this case it's as long as the door is wide. Of course, your final decision should come down to personal preferences, but if you want more clarity above all else, youll want to take a look at an 80mm telescope. Youre bound to find conflicting comments online about 70mm and 80mm telescopes, but there are some undeniable truths about their differences. Zooming in is the final step, where the telescopes eyepiece enlarges the image, letting the viewer see the object with more detail. Since there are no eyepieces of that size, the minimum we are using is 4mm. Alvaro Ibanez Perez (left) and Greg Piepol / Sungazer.net (right) Which Telescope Eyepiece Is Right for You? - Sky & Telescope - Sky However, its important to keep in mind that the difference in magnification between a 70mm and 80mm telescope is not significant. Having used both 70mm and 80mm refractors extensively, there are 2 striking influences on what can be seen with them: 1. optical quality (which are design AND sample related), making itself known in sharpness, contrast and steadiness of the images at higher powers, 2. aperture, first seen in the brightness of the images, even at low powers. A 600mm is a really big help. Bowlerhat knows what is important to him/her. Telescopes with 70mm and 80mm apertures are favored among novice and intermediate stargazers due to their manageable dimensions and cost-effectiveness. A longer focal length provides higher magnification but a narrower field of view, making it better suited for observing smaller objects like planets and the moon. With some luck, depending on the viewing conditions and how close it is to Earth, you might be able to distinguish its poles and maybe some of the bigger areas. useful magnification would be 500x. Which raises the point that there's a rather weak correlation between a telescope's aperture and its size and weight. The higher the magnitude, the dimmer the object. A 70mm telescope typically has a focal length of 70mm (2.75 inches), while an 80mm telescope has a focal length of 80mm (3.1 inches). Other factors to consider are mount type and focal length. I lose a little field of view over a similar focal ratio 70mm but gain the resolution and depth. Magnification is the ability of a telescope to make an object appear larger than it actually is. The 80mm will have more aperture which provides somewhat more resolution and contrast. April 1, 2007 edited April 1, 2007. Aside from their differences, a 70mm telescope is an excellent aperture to see a vast range of objects in outer space within our solar system. 70mm telescopes are entry-level products. Basically the 70mm F/6 is a strictly widefield scope--large objects. But if you use the smallest and lightest mount that's adequate for the scope, the weight and length of the telescope are very important indeed, since they determine the weight and size of the necessary mount. Compare Celestron 70 vs Celestron 80 vs Celestron DX 70 | B&H Dobsonian vs Newtonian Telescopes. The larger the telescopes aperture, the more light it can gather, resulting in a brighter and sharper image. I think 90mm/102mm is not really ideal with grab and go when 60-70mm are much lighter. Only when quality has proven to be similarly high side by side, I would pick the 80mm over the 70mm. It may also be better suited for viewing fainter objects in the sky. The optics are good, the build quality is ok, and it comes with all the . Please Do Not Buy Any Telescope Until You Read This! For reference, the brightest stars in the sky that can be seen with the naked eye like Polaris, Vega, and Antares have a magnitude below 3. The size of an observers aperture depends on their specific needs and budget. With a decent amount of magnification, a 70mm telescope tends to be more than enough for many people. Other factors, such as the quality of the optics and the mount, can also affect your viewing experience. For instance, when using an 80mm telescope, youll be able to see finer details of the moon and planets such as mars. Someone who enjoys looking at the stars will want to move up really fast. However, there are many affordable options available for both sizes, so it ultimately comes down to your budget and needs. This makes it a good choice for those who want a telescope they can take with them on the go. I was surprised to find that my recently acquired 76mm f9 Newt was far easier to carry out, despite it's added length. Both types of telescopes are relatively lightweight and compact, making them easy to transport. So far the answers seem a bit of mixed bag, but the 80mm favoritism is always strong. A 25mm telescope is an excellent tool for exploring the wonders of the night sky. How significant is the difference? Regarding cost, 70mm telescopes are usually more wallet-friendly than 80mm telescopes. While the initial cost of an 80mm telescope is higher, the enhanced performance and potential for more detailed observation can make the investment worthwhile. In this article there are 3 telescope categories, which will be referred by [orange] tags: [1] - Small and cheap (price range 50-200$). In this article, well take a closer look at the pros and cons of each option to help you make an informed choice. In terms of portability, there is not much difference between a 70mm and an 80mm telescope. I think I agree on portability point that'd been brought up here. Youll be able to see the moons surface, including mars, with more clarity than you would using a 70mm. That's about 28 or so square mm of light gathering area. Telescope Comparison Table - Backyard Stargazers The ability to capture the beauty of celestial Read more, As an astronomy enthusiast or someone just starting astrophotography, you might have encountered blurry images while trying to observe celestial Read more, In astronomy, a telescope is a device that aids in the observation of remote objects by collecting electromagnetic radiation (such Read more, Are you looking to learn more about the purpose behind using an astronomical telescope? The aperture's diameter (D) will be expressed either in millimeters or, less commonly, in inches (1 inch equals 25.4 mm). Telescope 80mm Aperture 600mm - Astronomical Portable Refracting Telescope Fully Multi-coated High Transmission Coatings AZ Mount with Tripod . quick question about 70mm vs 80mm aperture - Cloudy Nights
Black Male Therapists Birmingham Al, Luxury Apartments Montreal Rent, Articles D