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Celestron

Celestron StarSense Explorer DX 102AZ App-Enabled Refractor Telescope

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Arrives Sunday, Sep 13
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Style: Starsense Explorer DX 102


Features

  • SMARTPHONE-POWERED SKY TOUR: No experience needed! Just dock your phone, launch the StarSense Explorer app, and follow the on-screen arrows to locate stars, planets, nebulae, and more.
  • PATENTED STARSENSE TECHNOLOGY: Unlike other astronomy apps, StarSense Explorer uses sky recognition technology to turn your phone into a celestial navigation system, analyzing star patterns overhead to pinpoint your telescopes position.
  • TONIGHTS BEST TARGETS, INSTANTLY: The app generates a curated list of the top objects to see based on your time and location. See planets, bright nebulae, galaxies, and star clusters from the cityand even more from dark skies.
  • SIMPLE SETUP, SMOOTH TRACKING: Features a manual altazimuth mount with dual-axis slow-motion controls. Follow the on-screen arrows to your target; when the bullseye turns green, you can view it clearly through the eyepiece.
  • 102MM REFRACTOR WITH IMPRESSIVE VIEWS: The 4" Refractor with high-reflectivity coatings delivers sharp, vivid views of the Moon, planets like Jupiter and Saturn, and deep-sky favorites like the Orion Nebula and Andromeda Galaxy.
  • UNBEATABLE WARRANTY & SUPPORT: Buy with confidence from Celestron, a leading telescope brand in California since 1960. Your purchase includes a 2-Year US Warranty and unlimited support from our team of US-based experts.

Description

Celestron’s StarSense Explorer DX 102AZ is the first telescope that uses your smartphone to analyze the night sky and calculate its position in real time, making stargazing easier than ever. Perfect for beginners, this app-enabled telescope lets you dock your phone, launch the app, and follow on-screen arrows to planets, stars, galaxies, and more. Unlike other astronomy apps that rely solely on gyroscopes, StarSense uses patented sky recognition technology and a Lost in Space Algorithm (LISA)—like the sophisticated location systems used by satellites—to deliver accurate, real-time guidance. Simply align your phone with the telescope optics, and within minutes, you’ll be exploring with confidence. The app automatically generates a list of the best objects to view based on your exact time and location. Choose one and navigate there by following the on-screen arrows. When the bullseye turns green, your target is ready in the eyepiece. The high-quality 102mm Refractor with highly reflective coatings provides bright, detailed views of the Moon, Jupiter, Saturn, Mars, and deep-sky favorites like the Orion Nebula and Andromeda Galaxy. Includes two eyepieces (10mm and 25mm), an erect image diagonal, a red dot finderscope, a full-height tripod, and a StarSense smartphone dock. StarSense Explorer works with most modern smartphones; it is compatible with Android 12 and later, as well as iOS 18 and newer, including iPhone XR and newer models.

Brand: Celestron


Model Name: StarSense Explorer DX 102


Optical Tube Length: 81.3 centimeters


Eye Piece Lens Description: 25mm and 10mm eyepieces


Objective Lens Diameter: 10.2 centimeters


Telescope Mount Description: Altazimuth Mount


Product Dimensions: 30"D x 32"W x 50"H


Focus Type: Manual Focus


Power Source: Manual Operation Without External Power Source


Finderscope: StarPointer™ red dot finderscope


Eye Piece Lens Description: 25mm and 10mm eyepieces


Mount: Altazimuth Mount


Focus Type: Manual Focus


Power Source: Manual Operation Without External Power Source


Finderscope: StarPointer™ red dot finderscope


Compatible Devices: Smartphone


Number of Batteries: 1 Lithium Metal batteries required. (included)


Coating: Fully XLT Coated glass optics


Focal Length Description: 650 millimeters


Field Of View: 1.05 degrees


Zoom Ratio: 64


Additional Features: App-enabled smartphone sky recognition technology


Optical-Tube Length: 81.3 centimeters


Objective Lens Diameter: 10.2 centimeters


Item Dimensions D x W x H: 30"D x 32"W x 50"H


Item Weight: 14.2 pounds


Exit Pupil Diameter: 4.08 millimeters


Brand: Celestron


Model Name: StarSense Explorer DX 102


Global Trade Identification Number: 04


Unit Count: 1 Count


Manufacturer: Celestron


UPC: 050234224604


Number of Items: 1


Built-In Media: 25mm and 10mm eyepieces, Accessory tray, Erect image diagonal, Mount and tripod (preassembled), Optical tube, StarPointer finderscope, StarSense Explorer phone dock


Model Number: 22460


Manufacturer Part Number: 22460


Warranty Description: 2-YEAR WARRANTY


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Easy to use and good quality
Style: Starsense Explorer DX 102
My son and I LOVE this telescope. The app that you get access to is user friendly and really helps us to find objects in the sky. My son enjoys looking up the objects in the app and then moving the telescope in place to align the scope. We look forward to endless opportunities to star gaze. I just wish it came with a bag or case to protect it in transport. It’s light enough to take with us when we stargaze. ... show more
Reviewed in the United States on April 1, 2026 by S Finn
    • Good backyard scope
Style: Starsense Explorer DX 102
I bought the 102 mm refractor for backyard planet watching. I wanted the larges aperture that I could easily carry out the door, set up, and get on target. I didn't want to have to fuss with collimation, or wait for cool-down, so a refractor seemed like a good choice. I also wanted dual slow motion controllers. This scope fit all of the bills, and I think it was a good choice. One thing to keep in mind that this is a short focal length refractor, so at high magnification bright objects will generate significant chromatic aberration- you'll see purple and yellow halos. Celestron has pretty cleverly provided for this- the lens cap has a central hole of about 50 mm with a second small cap on it. If you want to look at something and are bothered by chromatic aberration, pop the cap on with the center hole open. It will reduce the amount of light coming in (and resolution, a bit) but it nicely tames the chromatic aberration. The red dot finder works extremely well for getting lined up quickly on bright objects. I haven't had time to play with star sense yet, but even without it this is a nice scope and it meets my needs perfectly. Edit: After I got this scope, I tried using the Star Sense cell phone holder. My first time out with it, I dropped it and it broke. I contacted Celestron, and they shipped me another. Great customer service! Now that I've had a chance to use, I have to say it's pretty impressive. It works well, and makes it possible to find things that I couldn't otherwise. All in all this is a great scope and exactly what I wanted. ... show more
Reviewed in the United States on November 7, 2023 by EZ CT
    • Beginning And Living Small?
Style: Starsense Explorer DX 102
Then this is definitely a telescope to check out. Right now, I am primarily reviewing the setup and storage features, since I just got it, and I am still learning all of its features. First off, setup was a breeze, So far, I love the tripod. It collapses and sets up easily and is stabilized by the easily removable tray. (If you usually use a patio or balcony for your star-gazing, this shouldn’t be a steadiness issue. (If you are viewing in rocky or uneven settings, or have lots of floor space, the tray can be, just as easily, fixed in place.) The actual telescope attaches to the tripod, in quite a clever way, to fix it firmly in place when in use, but easy to remove and gingerly store in a padded case, when not in use. So, if you live in a small space, with not much access to wide open viewing spaces, but can still get a good view of the cosmos from your space, this is a good starter. The telescope so far: With probably less than an hour of fidgeting and re-reading the instructions/provided information, I got a good view of a hot air balloon a couple of miles or so away. This is great for me, because I don't live where there is much to be seen on the ground, tall enough to be seen from a mile away, and that is really what you need to get this thing focused, in the daytime, when first using it, as is recommended. A stop sign would be great, because it's red, but the yellow and orange balloon worked a treat. (Something bright in color makes it easy to hone in on something extremely blurry in the distance. Green leaves of tall trees, not so much.) Hint: Do not try to focus on something less than .5 mile (0.804672km) away (like inside your house) or you will think you have a faulty one. Hint: Probably best not to buy this the day before some amazing celestial event, unless you are really proficient with telescopes and the study of the great out there. Sure you can see things far away, but it's not instantaneous or "point and shoot" (unless, see above.) Now to check out the moon at night. First (easily viewable) things, first! (Updates as I become more familiar with it.) 5-22-21 Update: Saw Jupiter and 3 of its moons! No definition to Jupiter (yet) but it was exciting all the same. ... show more
Reviewed in the United States on May 16, 2021 by Hey Jude
    • Good Scope, OK Mount, GREAT App.
Style: Starsense Explorer DX 102
You are definitely paying for the R&D for the app in the cost of this scope. That being said I think it is great for people just getting in to or returning to the hobby. I picked up this scope to get back into the swing of things after about 20 years away from the hobby. The app does an amazing job of finding things the first time, every time. I've been using the scope for a few weeks now and the app hasn't failed me once. The scope is good, not great. At 102mm it gives you enough light for visual astronomy of the planets, clusters and brighter DSO's. One of the big pluses is that the refractor design is maintenance free, no collimation required here. The focuser on mine is a bit gritty and can be hard to get focused when you're really trying to dial in the sharpness. The eyepieces are typical of what you will see in low cost scopes, I upgraded to Celestron X-Cel eyepieces and it was an AMAZING difference. Now for the mount, oh lord the mount.... The base of the tripod is, again, typical of a low cost scope, provides enough stability to get the job done. The single fork design is both the best and worst part of the mount. It is made out of amazingly cheap plastic, the movement and slow motion controls are friction based and tend to be either too tight or too loose, finding the sweet spot has thus far eluded me. The scope shakes badly after focusing or movement and you will have to wait a few seconds for things to calm down. But also on this fork mount is the phone holder/mirror that makes the StarSense app work, and boy oh boy does it work. Celestron also makes these in reflector and dobsonion designs, so whatever your viewing preference they will have you covered, remember you are paying for the app, not the quality of the equipment. So for a beginner or returning hobbyist I think this is a great jumping off point and a gateway into bigger and better scopes down the line. Grab this scope, upgrade those eyepieces, download that app and have hours and hours of fun. I would like to see Celestron come out with a universal StarSense phone mount and then allow you to pay for the app, I would love to have this on my dob, maybe some day. Happy stargazing!! ... show more
Reviewed in the United States on September 7, 2022 by Jeff
    • StarSence Explorer DX adds a new level of technology
Style: Starsense Explorer DX 102
I just recieved a new StarSense Explorerer 4 inch refractor telescope with a new type of technology and have to say I'm quite impressed. Ordinarily telescopes with a computer push to technology are a bit pricey and and often difficult to learn to use. In this case you don't pay for any technology because you already own it in your smartphone. This allows you to quickly observe many planets and deep sky objects with ease. The Starsense ap along with the camera in your phone simply dock and show you how to align precisely with simple and brief video clips. The camera in your phone along with the gyroscope literally compares instant real time pics in the sky and compares to an internal star map to show exactly where to point to whichever star planet or deep sky objects you choose. All you need to do is follow some really cool looking orange arrows until the display shows a green box and you are on your target. My first night trying this was quick and easy. It's not perfect however. In light polluted skies there was some difficulty in the northern sky so its seems to not be perfect in all situations but with patience it should work. What I really like about this is you get a new technology without paying for the technology. Previous types of technologies required having to pay for a camera. You already own the smartphone with a camera and the app is free but needs to be opened with a code unique to your telescope. This scope and the technology are seriously cool and can help both newbies and more experienced stargazers to enjoy the night sky without any hassle of starmaps or star alignments and confusing hand controllers. Furthermore if you need to move the telescope you can do so without having to do a new alignment and that is a really nice advantage. ... show more
Reviewed in the United States on February 24, 2020 by Darren Drake
    • So much trouble
Style: Starsense Explorer DX 102
Update: Had a lot of trouble trying to get this telescope aligned during the daytime hours. Finally figured out that if I started out the app in night mode then switched night mode off at a certain point, it would work. I also have a lot of trouble with the laser light. Sometimes it works and sometimes it doesn't. Now with the starsense app. I hate it. Just hate that app. Nothing connects when I try to use it. Is it my Samsung phone? It shouldn't have anything to do with it. After working and working on aligning and getting things to finally all work. All of a sudden it can't connect and keeps telling me to point it to a clear area in the sky. Someone who works with this company should really spend a few more bucks and get that App working so anyone, who buys their expensive telescope, can use it without being totally frustrated. Assembling this telescope was fairly easy. The hardest thing to do was finding that hex key. Picture doesn't help at all. If you turn the tripod where the slow motion handles are in the back, you can determine what is the front. The hex key is small and painted black so it blends in with the black part it sits in. If you look right above the one bolt on tripod at the top of leg, you'll barely see it. It would have been so much easier if they painted it a bright yellow. Once I found that, the rest was a breeze. Once assembled I downloaded the starsense app. Took it outside and got it aligned. I tried doing the phone part but never got what I was looking at to show on my phone screen. Will have to read up on that part more. Tonight is the first night where the sky should be clear. Hoping everything works good and I see my first star or planet. Will update... ... show more
Reviewed in the United States on February 6, 2023 by DB
    • Useless telescope
Style: Starsense Explorer DX 102
Bought as a gift but couldn’t get it set up . Not any easy task at all. When IT technology brother couldn’t get it work. I didn’t feel so bad. He can fix computers, phones, internet hook up, and he even called for help. So disappointing. No fun to this and what could see in the sky and live country. Was just a normal night sky maybe slightly amplified. What a waste of time and money to purchase. Then the hassle of return as had to fight for $ back on warranty . ... show more
Reviewed in the United States on June 7, 2026 by lageana
    • 2nd shipment was great.
Style: Starsense Explorer DX 102
Review Image by Kansas Family
August 5th, 26 delivery.. Very disappointed, the packing box has been nearly destroyed by Amazon. Was supposed to arrive yesterday but that driver took it back. I'm guessing likely due to the box being all torn up. The parts inside look ok. Won't know if anything is broken till its all opened up. This is a present to our grandkids. We're giving them their present in a torn up nearly destroyed box. Which is very sleezy. I recommend Celestron to ship their box packed inside a unmarked box for protection and to protect from porch pirates. Very very disgusted an expensive item came like this.... We then ordered a replacement on 8/5/26, it arrived on 8/8/26 in excellent condition. It had a prorective shipping box over it. ... show more
Reviewed in the United States on August 5, 2026 by Kansas Family

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