Yes, you can see planets with a refractor telescope. The refractor telescope is a type of telescope that uses a lens to focus light. This makes it ideal for viewing planets, as they are often very bright in the night sky.
An achromatic lens is a type of lens that is designed to reduce or eliminate the amount of chromatic and spherical aberration. Chromatic aberration is caused by the different refractive indices of the lens elements for the different colors of light. Spherical aberration is caused by the fact that the lens elements are not perfectly spherical. Achromatic lenses are usually made of two or more lens elements made of different materials with different refractive indices.
No definitive answer exists to this question as it depends on the specific needs and preferences of the individual. Some people may find that a refractor telescope provides a better image quality than a reflector telescope, while others may prefer the wider field of view offered by a reflector telescope. Ultimately, it is important to choose the type of telescope that best suits your individual needs and preferences.
There are a few things to consider when choosing between a refractor or reflector telescope as a beginner. Reflector telescopes are typically cheaper than refractor telescopes. However, refractor telescopes do not require as much maintenance as reflector telescopes. If you are interested in astrophotography, a refractor telescope is a better option. If you want a telescope for visual use only, either type of telescope will work.
4.5/5
ã€Optimum Magnification】Three replaceable eyepiece (16X, 40X, 80X) with a 3X Barlow lens. 6*30 finder scope with mounting bracket, erect-image diagonal make locating objects more easily.
ã€Adjustable Tripod】This telescope allows for many different viewing positions with a adjustable tripod. Adjustable full size tripod ensures a stable platform.
ã€Applicable Use】This telescope is quick and easy to set up even for the novice and will encourage kids to love learning about space, great gift idea for kids who love science and astronomy!
ã€Satisfaction Quality】Reliable and friendly customer service within a 24 hour time frame. 1-YEAR care for free replacement.
ã€Ultra-clear Refracting Telescope】With 400 mm focal length and 80 mm aperture to capture more light picture and optical glass coated for enhanced image brightness to protect your eyes.
$234
For a beginner, this telescope is excellent. Since receiving it, my family and I have utilized it at least seven times and have been having a great fun with it. On the summer solstice, we had the once-in-a-lifetime opportunity to view the strawberry moon; it was breathtaking! The Gskyer Refractor 40080mm has a 3x Barlow lens and three eyepieces: a 5mm, a 10mm, and a 25mm. This allows you to essentially magnify those eyepieces three times. Along with an adjustable tripod, this Gskyer telescope also includes a little plastic tray that slides in between the tripod. This shelf, which locks the tripod into place and is very easy to spot in the dark, was ideal for storing our other lenses while not in use. It stores well and folds easily. We had no trouble putting this telescope together right out of the box because the assembly instructions were so simple to follow. However, there are no usage instructions. This telescope locks perfectly so it won't move left, right, up, or down once you find the celestial body you're looking for. With its handle, you can easily move in any direction, and once you discover what you're looking for, it locks down with a simple wrist turn. I would advise calibrating the moon into the eyepiece using the crosshairs in order to make finding planets easier for you. Once the moon is positioned properly, you ought to be able to see it through both the finder and the actual telescope. Finding mars was rather simple after we made this change. For my 4-year-old son, who aspires to become an astronaut and visit Mars, this was incredibly thrilling. In the telescope, Mars seems quite small and has an orange, dazzling appearance. He was delighted to see it, which is quite cool. We found the moon to be the most fascinating object, especially for the kids, because it appears so close and astonishingly clear through the telescope that you could almost reach out and touch it. I was unaware that the moon's lower right hand contained a region that resembled a starburst. It is incredible. My 10-year-old daughter refused to give the telescope up to anyone, and my 4-year-old son thought it was quite cool. Both of my kids could utilize the concentrate because it was so simple to use. Each lens is packaged in a separate plastic case with a lid to keep it closed and prevent breakage. Each lens also has a separate dust cover. With the Gysker telescope, observing star clusters and simply observing space in general is simple. We haven't yet used this in nature, but I'm incredibly excited to. We can't wait to take this to Joshua Tree National Park, where we live, and explore from the top of the giant rocks or from Keys View. We'll have to look up and view a comet when it next passes the earth, but I think this would be a great telescope to use for that. This telescope is beautifully constructed, looks lovely and solid, and in my opinion will last for many years. My husband's one wish is that the legs could have expanded and grown taller. He claimed that because he had to stoop so low to watch, despite being 6'2", it was uncomfortable for him. In order to make it taller for him to see, we got three milk crates and placed one under each leg. Apart than that, we think this telescope is fantastic and have had a great time using it as a family. I was provided with this telescope at no cost in exchange for an unbiased review. I am not paid for my opinions, and all thoughts are my own.
4.5/5
Micro fiber cloth safely cleans optics without scratching or leaving residue
Moon filter allows detailed views of the Moon especially during the brighter phases
Carrying case fits all of the included items in the die-cut foam interior
Fully-coated eyepieces for higher magnification.Planetary filters enhance details on Jupiter, Saturn, Mars and Venus
15 mm Kellner Eyepiece.9 mm Kellner Eyepiece.#80A Blue Planetary Filter.#25 Red Planetary Filter. Moon Filter. Micro Fiber Cloth.Plastic Carrying Case with Foam
$234
A Celestron Powerseeker 127EQ is what I own. The telescope has a 20mm, 4mm, and a 3x Barlow Lens as standard equipment. While the 20mm works perfectly, some people find it challenging to use the 4 mm because of the tiny entry hole. The 4mm, however, brings the 127mm aperture to its utmost limit when used in conjunction with the 3x Barlow.Since they are of superior quality and do not approach the scope's maximum magnification, the accessory package may offer a better variety of lenses for usage with my telescope than those that came with it.The red filter makes the view very faint and works best with a larger lens like the included 15mm, but the blue filter and moon are also quite helpful.Since I reside in a tiny rural community, I believe that light pollution may possibly be at play.Personally, I wish I had bought this equipment along with the telescope.For a beginner using a Celestron telescope with a modest aperture, the equipment is essential.Even a really lovely lens cloth with a logo is included in the kit.The only issue I have is that the Powerseeker 127EQ should have come equipped with these two lenses rather than the 20, and 4mm.If you own a 127EQ, you will be shocked at the difference in quality when you use the kit's lenses for the first time as well as at the absurdly low price that is being charged.
4.4/5
â—“ sharing in real time: you can take pictures or videos and share them with your family and friends in real time with the phone holder. Star telescope is suitable for kids who love science to discover the mystery of universe.
â—‘ OPTIMUM MAGNIFICATION: Two replaceable 1. 25" Keller eyepiece(K6mm/16X, K25/67X) to enhance the power for this astronomical telescope. 5X24 finder scope with mounting bracket and cross line, erect-image diagonal make locating objects more easily.
â— ultra-clear Refracting telescope: with 400 mm focal length and 70 mm aperture to capture more clear picture and optical glass coated for enhanced image brightness to protect your eyes. A awesome tool helps beginners and students to explore the space.
â—” RELAIBLE - Come with a backpack and delicate box as a extra gift to your family. TELMU provides 24 month to our customers. If you have any problem with this space telescope after you receive it, please contact us at first time.
â—’ easy to operation: No tools are required for refractor telescope even for the novice. Adjusted from about 17. 7-Inch to 35. 4-Inch. Allowed for many different observational positions and keep the whole tripod steady With castor wheel.
$234
This telescope is excellent for beginners because it's very simple to assemble and the provided adapters are simple to use.Instead, I would use this to look at the moon and take some amazing pictures with your phone. I wouldn't use this to search distant galaxies or star clusters, or try to find a binary star (or two). You can see the moon's craters and other details better than you could with binoculars, but I wouldn't try to locate the flag on the moon (see my photos).It includes a backpack storage compartment where the stand and the scope are kept apart and cushioned with foam. The height is ideal for children, and it can be adjusted well for height using a fairly stable leaver. My nieces and nephews liked looking at the moon after I performed this activity with them.Since there are only a few joins before it is operational, getting this up and running should only need a short period of time. The whole arrangement is a little wobbly, as to be expected, so you have to be careful not to move the telescope too much, especially when trying to take pictures with your phone camera.
4.3/5
ï‚·ã€High Quality Optics】400mm(f/5.7) focal length and 70mm aperture, fully coated optics glass lens with high transmission coatings creates stunning images and protect your eyes. Perfect telescope for astronomers to explore stars and moon.
ï‚·ã€Wireless Control】Free includes one smartphone adapter and one Wireless camera remote to explore the nature of the world easily through the screen and take amazing celestial images.
ï‚·ã€High Magnification】Come with two replaceable eyepieces and one 3x Barlow lens. Eyepiece1: 25mm(16X), Eyepiece2: 10mm(40X). 3x Barlow lens trebles the magnifying power of each eyepiece. 5x24 finderscope with mounting bracket and cross-hair lines inside make locating objects easily.
ï‚·ã€Adjustable Tripod and Carry Bag】 This telescope allows for many different viewing positions with a adjustable aluminum alloy tripod and a carry bag, the telescope and tripod can fit inside the bag for easy traveling and storage.
ï‚·ã€Satisfaction Warranty】 1-year warranty and lifetime maintenance. If you have any question about product and service, please feel free to contact us, we will do our best to help you.
$234
This is incredible! This was a gift for my son, who has a strong interest in planets. We had no idea how to use the telescope because it was the first one we had ever purchased. The directions are fairly simple to understand. My 10-year-old kid put everything together by himself. And after a few failed attempts, we finally saw the moon with it. Cool phone attachment makes it very simple to see. However, aligning the camera properly requires some care and might be challenging. Overall, I'm quite pleased with my new telescope. Later, I'll attempt to observe additional stars.
4.3/5
ã€High Quality Optics】The interchangeable eyepieces with a 3x Barlow lens increase viewing power, 5x24 finderscope with mounting bracket, erect-image diagonal, and two bigger focus eyepieces(K10mm:51X ,K25mm:128X) make locating objects easy
ã€High Magnification】360mm(f/5.1) focal length and 70mm aperture, fully coated optical glass with high transmission coatings creates stunning images with increased brightness and clarity. Protect your eyes.Perfect Refracting telescope for beginners or kids to explore sky
ã€Adjustable Tripod and Carry Bag】This telescope allows for many different viewing positions with a adjustable aluminum tripod, come with a carry bag, the telescope and tripod can fit inside the bag for easy traveling and on-the-go stargazing
ã€No-tool Set Up】This telescope is quick and easy to set up even for the novice and will encourage kids to love learning about space, great holiday or birthday gift idea for kids who love science and astronomy
ã€Satisfaction Warranty】Reliable and friendly customer service within a 24 hour time frame, 24 Month warranty guarantee, if you have any quality problem with this telescope after you receive it, please contact us at first time. We will make a instant refund or replacement for you until you are satisfied with it
$234
I purchased my niece and nephew an Emarth Telescope as a gift. Because of its light weight and small size, it is suitable for toddlers, preschoolers, and older children. Before it can be used, this telescope does need to be assembled, and it's preferable if adults handle it because children might touch and dirty the lens components. The design, in my opinion, is rather brilliant because it comes with a foldable carrying bag that can hold everything while not in use.Along with the primary objective lens, the telescope also comes with a viewfinder scope. There are two eyepieces supplied, one measuring 25mm and the other 6mm (25mm offers 14.4x and 6mm offers 60x). When necessary, a 3x Barlow lens can boost the magnification even more. In order to align the viewfinder scope, tighten the adjustment screws on the mount after calibrating it with a nearby object. We can move on to study other objects, like the moon, when the viewfinder scope has been calibrated and the same thing has been seen through the main lens and viewfinder scope. The package comes with a small tripod to increase stability on most surfaces, and the pan handle aids in locking the telescope at a specific angle.** Keep a watch on children as they use the telescope to prevent them from staring directly into the sun, which could harm their eyes.
4.3/5
INCLUDED ACCESSORIES: We’ve included two eyepieces (20mm and 10mm), an erect image star diagonal, a travel tripod, and a red dot finder scope. Download our BONUS Starry Night Basic Edition astronomy software for interactive sky simulation.
UNBEATABLE WARRANTY AND CUSTOMER SUPPORT: Buy with confidence from the world’s #1 telescope brand, based in California since 1960. You’ll also receive a 2-year warranty and unlimited access to technical support from our team of US-based experts.
POWERFUL REFRACTOR TELESCOPE: The Celestron AstroMaster 70AZ is a powerful and user-friendly refractor telescope with fully coated glass optics, a sturdy yet lightweight frame, two eyepieces, a red dot finder scope, and an adjustable-height tripod.
HIGH-QUALITY 70MM OPTICS: Our Celestron telescope features a powerful, fully coated 70mm glass optic objective lens. Erect image optics allow you to observe celestial objects at night and terrestrial targets like wildlife and landscapes during the day.
QUICK SETUP & LIGHTWEIGHT FRAME: This telescope for adults features a lightweight frame and a panning handle with Alt-Az control for smooth and accurate pointing. Setup is quick and easy, with no tools required.
$234
The majority of people enjoy reflectors, but all that collimating simply irritates me. Because I live in southern Louisiana, my AstroMaster is always prepared to leave at a moment's notice, which is vital. When the sky finally does clear, we have a lot of cloud cover here, so I don't have time to mess about with mirror alignment.This telescope has adequate power to examine the moon in great detail, Jupiter (where the cloud bands can be seen), and Saturn (rings are visible). The bigger and brighter Messier objects like M31 (Andromeda Galaxy) and M42 are also fine with it (Orion Nebula). However, I do advise getting the Celestron lens add-on kit for it eventually because it gives you so many more options and the lenses are just of higher quality.Finally, I'll make a note about the tripod. Despite the tripod, I am giving this scope a five-star rating. It's not that it's flimsy—actually it's very sturdy—but because of the clutch system, it's very challenging to attach it onto a moving item and then reposition it after it moves. Actually, it works much better when I simply install this scope on top of one of my reliable video tripods. The scope's dovetail mount has threads on the bottom that allow you to attach it to a common tripod, and I give that feature a lot of props.
4.2/5
ã€High Quality Optics】600mm(f/6.7) focal length and 90mm aperture, fully coated optics glass lens with high transmission coatings creates stunning images and protect your eyes.
ã€Easy to Operate】No tools are required for reflecting telescope even for the novice, quick and easy to focus.
ã€High Magnification】Come with three replaceable eyepieces(24X, 60X,120X) and one 3x Barlow lens. 3x Barlow lens trebles the magnifying power of each eyepiece.
ã€What You Get】AZ90600 telescope with 3 eyepieces, our 12-month worry-free warranty and friendly customer service.
ã€Adjustable Tripod】This telescope allows for many different viewing positions with a adjustable aluminum tripod. The height of aluminum tripod can be adjusted from about 31.5-inch to 49-inch.
$234
I delivered it this afternoon. In approximately ten minutes, my daughter set it up. She had never done this before. She took a glance at the images and then read the captions for each one. I'm currently waiting for darkness to fall in my den. Spotter scope was aligned outside, and after that, waiting. It has a great appearance and is the ideal size to move about or leave out for debate by my astronomy buddies. I had a chance to test it out, and it was a terrific way to capture Saturn and Jupiter. The clouds then appeared. The Barlow 3x's all-plastic construction was the only item that concerned me. Why include a ten-cent piece that may shatter or deform when the rest are nearly flawless?Cons: simple setupSpotter scoop O ring in heavy-duty styleThree eyepieces are included.Excellent optics provided some stunning views.Good weightCons: Cheap 3x Barlow adapterOverall, a fantastic telescope for the money.
4/5
SUPERIOR OPTICS: The Celestron 70mm Travel Scope features high-quality, fully-coated glass optics, a potent 70mm objective lens, a lightweight frame, and a custom backpack to carry it all. Its quality is unmatched in its class and against competitors.
BONUS BAG, TRIPOD, AND SOFTWARE: This Celestron telescope and full-height tripod can be taken anywhere in the included travel backpack. Accessories also include a FREE download of one of the top consumer rated astronomy software programs.
POWERFUL EYEPIECES FOR UP-CLOSE VIEWING: Our telescope for astronomy beginners is equipped with two high-quality eyepieces (20mm and 10mm) that provide low- and high-power views of celestial objects at night and terrestrial objects during the day.
UNBEATABLE WARRANTY AND CUSTOMER SUPPORT: Buy with confidence from the world’s #1 telescope brand, based in California since 1960. You’ll also receive a two-year warranty and unlimited access to technical support from our team of US-based experts.
LARGE 70MM OBJECTIVE LENS: Our refractor telescope is equipped with a large 70mm aperture objective lens that provides enhanced, brighter views compared to the 50mm model while adding very little additional weight. Setting up and using the Travel Scope is quick and easy.
$234
With my daughter, I have been using this scope and having a great time. The tripod is essentially useless, as has been said by others. I usually use a full-sized one that I purchased for a camcorder years ago for a reasonable price—probably about $40 at the time. If you have one, consider using it instead. You could also try buying anything on Amazon or eBay for a reasonable price.The lenses work well for seeing the moon, as many other reviews have noted. When I first used it, I was astounded to look at Jupiter and see the specks of light that represented its moons orbiting the planet. In my experience, none of the planets you observe will appear the way you expect them to; via the provided lenses, they are essentially colored specks of light.However, I did purchase a Barlow 2x lens, which has added some intrigue to the planet-watching process. If you really want to try and view details of planets, etc., go for a different scope because it is only somewhat better. The ring around Saturn has been visible to me with the Barlow lens and the 10mm lens, and the other night I was able to just barely make out the half-circle of the sun illuminating Venus in the night sky (have good eyesight or be able to work with glasses when viewing it in the scope for that one; it was kind of like making out Saturn). Without a sturdy tripod or properly dialing in the spotting scope (one of the most unpleasant aspects of setting up this telescope, by the way), the Barlow makes things difficult, but once you do, it's kind of cool.Using it to watch wildlife was another feature that I really appreciated and was a little shocked by. This is something I originally bought for a camping trip so I could see the stars, moon, planets, etc. But boy, it was so much joy to see nesting birds, a muskrat swimming across the lake (far away), and other things during the day. It is highly recommended for that because it is quite portable and packs up nicely, as you would expect a travel scope to.
3.8/5
✅ BUY 1 GET ONE FREE: Buy astronomical telescope get monocular telescope free. It supports STEM learning and encourages scientific exploration and a love of nature. Whether it’s hiking or backyard play the handy backpack allows for easy carrying enabling the adventurous kids adults astronomy beginners to explore and learn. Fantastic for bird watching, scenery viewing, concert, astronomical wonders and discovering moon.
✅ PRIMARY ASTRONOMICAL OBSERVATION KIT: ①400mm focal length and 70mm aperture ② Two 1.25" eyepieces (K25mm & K10mm) magnification from 51X to 128X ③ 5X24 Finder Scope ④ Adjustable tripod ⑤ A carry bag ⑥ Lens tube ⑦ Phone Clip ⑧ A set of Photo Telescope ⑨ Bluetooth Self-timer
✅ 24 HOURS PROBLEM SOLVE: if you met problem with your item bought, we will solve the problem within 24 hours, JUST MESSAGE US BEFORE LEAVING A REVIEW. We can not guarantee 0% defective rate, but we guarantee 100% satisfaction.
✅ FMC OBJECTIVE LENS: high light transmission ensuring enhanced quality of image, restoring the original pictures into your eyes.
✅ PERFECT BIRTHDAY GIFT SET: for friends, kids, son, daughter, boy, teen, girl, toddler, preschoolers, nephew, niece, grandson, granddaughter, grandchildren, holidays, Christmas, camp, hike, summer activities, beach activities, bbq/family events, outside event, prekindergarten outdoor kids toy, camping toys, outdoor gear for kids to play. Best educational equipment! Perfect boys birthday gifts!
$234
Recently, I joined an astronomy club. I can gain more knowledge about the universe, planets, stars, and constellations. There isn't a "Perfect" telescope, I was told; it depends on my spending limit and my objectives for my observations. This Mesixi set costs less than many other standard starter kits. The best part is that it includes numerous useful goods and optical equipment worth hundreds of dollars. It's the right decision for me. With the step-by-step photo directions, installation was pretty easy. The tripod is quite robust. Additionally, it includes a second little tripod for the included photo telescope. Lenses have coatings. Coated lenses offer some degree of defense against glare and scratch-related damage. A Finderscope, a 10mm eyepiece, a 25mm eyepiece, a Planetary Multiplier Mirror, a 3x Burlow Lens, a Zenith mirror for measuring star positions precisely, a 25mm eyepiece, and a 10mm eyepiece were also included in the kit (increases the effectiveness of the focal length to magnify higher quality images). I discovered an entirely new world when I combined all of these tools with the 400mm focal length Lens Tube. It was possible for me to choose between a small, clear, and bright image at a lesser magnification and a large, fuzzy, dark image at a high power, which would either reduce or improve the clarity and general image quality. I was able to observe things such as the Andromeda galaxy core, the Orion Nebula, other huge emission or reflecting nebulae, such as the Pleiades, large star clusters, lunar observations, etc. with this 400mm focal length lens. To take pictures of the astronomical images, a Bluetooth self-timer, phone clip, and photo set are offered. To keep the eyes safe while observing the solar system, there is an AstroSolar. There is a free, top-notch monocular available. I can transport all the parts easily by placing them in the supplied carrying case. There are many wonderful surprises in this Mesixi astronomical telescope kit. My eyes have been awakened to a world of cosmic wonders and excursions. high-quality goods that are also enjoyable and educative. strongly advised!
3.8/5
UNBEATABLE WARRANTY AND CUSTOMER SUPPORT: Buy with confidence from the world’s #1 telescope brand, based in California since 1960. You’ll also receive a 2-year warranty and unlimited access to technical support from our team of US-based experts.
COMPACT AND PORTABLE: This telescope for adults and kids to be used together is compact, lightweight, and portable. Take the telescope to your favorite campsite or dark sky observing site, or simply the backyard.
PERFECT BEGINNERS TELESCOPE: The Celestron PowerSeeker 50AZ is an easy-to-use and powerful telescope. The PowerSeeker series is designed to give the first-time telescope user the perfect combination of quality, value, features, and power.
MANUAL YOKE MOUNT: Navigate the sky with our refractor telescope. It features a yoke mount with a slow-motion altitude rod for smooth and accurate pointing. Adjust rod to desired position, then easily secure by tightening cross knob.
MULTIPLE ACCESSORIES: The Celestron PowerSeeker 50AZ Telescope features 4 eyepieces (20mm, 12mm, 4mm, and 1.5x image erecting eyepiece), star diagonal, a finderscope, plus a 3x Barlow lens to triple the power of each. Accessories also include a FREE download of one of the top consumer rated astronomy software programs.
$234
This review is my sincere attempt to inform others about a fantastic tiny scope. Before buying this scope, I had to study reviews to see whether it was any good, bad, or whether they were produced by people who were ignorant of the issue. I always start with the one stars to weed out the ignorant and those who just like to whine and complain. I completely disregarded anyone who claimed they couldn't see anything or that they could see just as well in their backyard using only their bare eyes. I would advise these people to get a life. Next, I move on to the three stars, where I find people who have valid concerns. For example, perhaps the Barlow lens doesn't work with this particular telescope. I bought this for my granddaughter for her birthday, which is in about two weeks. Yes, I opened it to make sure it wasn't damaged and was in good working order. I was impressed with its power and sharpness, and I liked it so much that I bought grandpa one and two. Thank you, grandmom. Just to add, I have many scopes in a variety of sizes and styles, so I know enough to get by in the hobby. I live in the northeast, where it's February and $100.00 scope I started to look for the horse head nebula, but my fingers hurt and the cold won out. Now I must wait for warmer weather, as it does for most people. As I mentioned before, I have many scopes, many great scopes, but this one I just had to have. Did I really need it? Probably not. Want won out. In addition, it looks nice on my wall with all of my other smaller group of scopes. So overall, I think it's worth the buy. As with all
There are two main types of telescopes, refracting and reflecting. Refracting telescopes use lenses to bend and focus light, while reflecting telescopes use mirrors to do the same. Each type has its own advantages and disadvantages.
Refracting telescopes are telescopes that use a lens to gather light. They are the oldest type of telescope and were first used in the 17th century. Refracting telescopes have several advantages over other types of telescopes. They are less expensive to build, they are more portable, and they have fewer moving parts. However, refracting telescopes also have several disadvantages. They are more difficult to align, they suffer from a phenomenon called “chromatic aberration,†and they have a limited field of view.
Achromatic telescopes are used to observe astronomical objects without the interference of chromatic aberration. This type of telescope uses a combination of two lenses of different refractive indices to cancel out the effect of chromatic aberration.
A refractor in a telescope is an instrument that uses a lens to collect and focus light from distant objects. This type of telescope is the most common and is used by amateur and professional astronomers alike. The lens in a refractor telescope can be made of different materials, such as glass or plastic. The size of the lens determines the amount of light that can be collected and the level of detail that can be seen in the image.
Refractor telescopes are good for a number of things. They are good for general astronomical observing, for example. They are also good for terrestrial observing, such as watching wildlife or observing the Moon. Refractor telescopes are also good for astrophotography.
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