Manufacturer | Celestron |
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Place of Business | TORRANCE, CA, 90503 US |
Language | English |
Item model number | 81035 |
Product Dimensions | 17.78 x 10.16 x 3.81 cm; 167.83 g |
ASIN | B07J2GGFQB |
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Celestron 81035 Basic Smartphone Adapter 1.25" Capture Your Discoveries, Black
Purchase options and add-ons
Brand | Celestron |
Colour | Black |
Compatible devices | Smartphones |
Mounting type | Surface |
Material | Metal |
About this item
- This smartphone adapter connects your smartphone to a telescope, binocular, spotting scope, or microscope, so you can capture images and video through the eyepiece
- Works with most smartphone devices
- Compatible with most telescope eyepieces and any eyepiece with an outside diameter measuring from 29mm to 45mm
- Simple to use! Place your phone in the adapter, center your phone’s camera over the eyepiece, and use the knobs to secure the adapter in place
- Durable, metal bodied adapter stands up to rigorous use in the field and harsh weather conditions
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Additional Information
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Product details
- Is discontinued by manufacturer : No
- Language : English
- Product Dimensions : 17.78 x 10.16 x 3.81 cm; 167.83 g
- Date First Available : Oct. 24 2018
- Manufacturer : Celestron
- Place of Business : TORRANCE, CA, 90503 US
- ASIN : B07J2GGFQB
- Item model number : 81035
- Country of origin : China
- 鶹 Rank: #6 in Telescope Photo Adapters
- Customer Reviews:
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Product description
Capture and share your observations through just about any optic with this handy, simple-to-use smartphone adapter. Whether you’re snapping an instagram-worthy image of the moon, sharing your latest Wildlife sightings with a binocular or spotting scope, or preserving lab specimens with your microscope, this versatile adapter handles It all with ease. No matter which optic you choose, installing and using the adapter is hassle-free. First, place your phone in the adapter. It’s held securely in position with the help of tightening knobs that lock your phone in place. Next, align the phones camera with the center of the eyepiece. Once you've determined the perfect position, clamp the adapter over the top of the eyepiece and use the knobs to adjust for a secure fit. Note: some large and/or bulky phone cases (including folio style cases) may need to be removed for the phone to fit in the adapter. Once the phone is mounted over the eyepiece, you can capture still images or video, Plus access all the rest of your phones features. You can even text your photos to a friend or post them on social media while your phone is still mounted in the adapter. To determine if your optic is compatible with the basic smartphone adapter, simply measure the outside diameter of your eyepiece. If it falls within the 29mm to 45mm range, you may use it with this adapter. The adapter does not work with riflescopes.
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Top Brand: Celestron
From the manufacturer

Celestron 81035 Basic Smartphone Adapter 1.25" Capture Your Discoveries, Black
- This smartphone adapter connects your smartphone to a telescope, binocular, spotting scope, or microscope, so you can capture images and video through the eyepiece.
- Works with most smartphone devices.
- Compatible with most telescope eyepieces and any eyepiece with an outside diameter measuring from 29mm to 45mm.
- Simple to use! Place your phone in the adapter, center your phone’s camera over the eyepiece, and use the knobs to secure the adapter in place.
- Durable, metal bodied adapter stands up to rigorous use in the field and harsh weather conditions.

Capture and share your observations through just about any optic with this handy, simple-to-use smartphone adapter. Whether you’re snapping an Instagram-worthy image of the Moon, sharing your latest wildlife sightings with a binocular or spotting scope, or preserving lab specimens with your microscope, this versatile adapter handles it all with ease.
No matter which optic you choose, installing and using the adapter is hassle-free. First, place your phone in the adapter. It’s held securely in position with the help of tightening knobs that lock your phone in place. Next, align the phone’s camera with the center of the eyepiece. Once you’ve determined the perfect position, clamp the adapter over the top of the eyepiece and use the knobs to adjust for a secure fit.
Note: Some large and/or bulky phone cases (including folio style cases) may need to be removed for the phone to fit in the adapter.

Once the phone is mounted over the eyepiece, you can capture still images or video, plus access all the rest of your phone’s features. You can even text your photos to a friend or post them on social media while your phone is still mounted in the adapter.
To determine if your optic is compatible with the Basic Smartphone Adapter, simply measure the outside diameter of your eyepiece. If it falls within the 29mm to 45mm range, you may use it with this adapter. The adapter does not work with riflescopes.
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Customer reviews
Customers say
Customers like the size and ease of use of the portable electronic device mount. They mention it's good enough for kids and teenagers. However, some customers have reported that it takes a few minutes to set up and attach the bracket to the phone. Opinions are mixed on the sturdiness, adjustability, and compatibility of the product.
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Customers like the size of the product. They mention it's sturdy, has a good frame, and is good enough for kids and teenagers.
"Flimsy but good enough for kids and teenagers." Read more
"Very easy to use, super sturdy..." Read more
"Great product..." Read more
"Good frame but screw is too weak..." Read more
Customers have mixed opinions about the sturdiness of the product. Some mention it's solid, well-made, and holds everything steady. However, others say it's cheaply made and doesn't offer any adjustment.
"I found it fairly sturdy and safely attaches to the phone...." Read more
"Poor quality, broke during first use. I never got to use it actually...." Read more
"...Sturdiness for keeping my phone in place is great but the durability was bad...." Read more
"Flimsy but good enough for kids and teenagers." Read more
Customers have mixed opinions about the adjustability of the product. Some mention it fits their phones, holds everything steady, and has lots of adjustable room to play with. However, others say it doesn't allow for adjusting left and right to line up the camera lens.
"The quality was poor and it was not easy to fit the telescope, so we returned it." Read more
"Fits perfect, lots of adjustable room to play with so will work with any style phone...." Read more
"This is a well made metal cellphone adapter but it does not offer any adjustment to distance the phone camera lens from the telescope eyepiece." Read more
"Fits my Orion telescope perfectly <3 worked great! I used my galaxy s21. Thank you." Read more
Customers have mixed opinions about the compatibility of the product. Some mention it works perfectly with the spotting scope, while others say it doesn't work with today's smartphones.
"Fits perfect. Works great. Bought after a hawk paid us visit...." Read more
"...They wont work on large eyepieces." Read more
"Fits my Orion telescope perfectly <3 worked great! I used my galaxy s21. Thank you." Read more
"Works for its intended purpose to hold a phone up to a telescope or microscope eyepiece, but it also has a tripod mounting thread so I also use it..." Read more
Customers have mixed opinions about the ease of use of the portable electronic device mount. They mention it takes a few minutes to line up, is tricky to set up, and doesn't hold the phone. Some also say it's difficult to match the lens of an iPhone 15 Pro with the mount.
"...Takes a few minutes to line up but once it is lined up it works quite well. Holds my Galaxy S21 Ultra in a medium thick case...." Read more
"The description says "basic" and I can see why. It's really hard to line up the right lens with the telespcope eyepiece. It's of limited use...." Read more
"...This piece was so easy to use. Not an easy setup at first, trying to adjust for perfect viewing but once it was set up, I was golden and on my way...." Read more
"Good build material, but difficult to match the lens of an iPhone 15 Pro with the binoculars." Read more
Reviews with images

iphone holder - tricky to line up with eyepiece
Top reviews from Canada
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- Reviewed in Canada on April 12, 2025Verified PurchaseI found it fairly sturdy and safely attaches to the phone.
If you have a phone with multiple cameras like the iPhone Pro for example, you MUST download an app with a MANUAL camera photo.
So you can control which lens you use depending on the optical zoom without the auto-switching of the built-in camera app.
- Reviewed in Canada on December 31, 2023Verified PurchaseFlimsy but good enough for kids and teenagers.
- Reviewed in Canada on January 26, 2022Verified PurchaseWhen I decided I would try my skills with a telescope, I soon learned I had zero skills. I watched many YouTube videos in regards to different setups that others were using. Of course they all had thousands of dollars in equipment that I couldn’t afford. I looked for the cheapest but most practice ideas for my budget. This piece was so easy to use. Not an easy setup at first, trying to adjust for perfect viewing but once it was set up, I was golden and on my way. Too cold outside for me to setup the telescope at the moment but I plan on being out there this spring, summer and fall to get as much photography as I can. Good luck to all who enjoy this area.
- Reviewed in Canada on July 13, 2022Verified PurchaseI like that with my 1.25 and 2 inch eyepeices this worked beautifuly! Sturdiness for keeping my phone in place is great but the durability was bad. The turn knob broke after my sixth night star gazing and taking photos with it. I barely tightened my phone to it when the knob just came off of it in my fingers. Can't put it back on either since its really flimsy plastic that supports the knob to the metal gear rod. They should've made the knob assembly metal as well. 3 stars for the few nights of good stargazing and ease of use but quite a reach for 5 stars when it lasted only six nights.
- Reviewed in Canada on March 21, 2025Verified PurchaseFits my Orion telescope perfectly <3 worked great! I used my galaxy s21. Thank you.
- Reviewed in Canada on May 20, 2023Verified PurchaseThe quality was poor and it was not easy to fit the telescope, so we returned it.
- Reviewed in Canada on January 9, 2022Verified PurchaseAttached a really heavy Galaxy S21 Ultra to a small spotting scope and it holds the weight of the phone no problem, No bending causing the camera to move away from the scope eyepiece.
Takes a few minutes to line up but once it is lined up it works quite well.
Holds my Galaxy S21 Ultra in a medium thick case.
10/10 would order again (but I probably wont have to due to the metal build).
- Reviewed in Canada on January 7, 2025Verified PurchaseThe description says "basic" and I can see why. It's really hard to line up the right lens with the telespcope eyepiece. It's of limited use. Maybe if your phone only has one camera...
Top reviews from other countries
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Klaus SchmidtReviewed in Germany on January 4, 2024
5.0 out of 5 stars Qualitative Ausführung
Verified PurchaseVollmetall, kein Kunststoff
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özgür alparslanReviewed in Turkey on April 26, 2024
2.0 out of 5 stars Hizalamak cok zor
Verified PurchaseTelefonu sigdirabilmek icin kilifini cikartmak zorunda kaldim. Hem de piyasadaki buyuk telefonlardan biri bile sayilmazken. Duzgun bir goruntu alabilmek icin telefonu durbune hizalamaksa basli basina bir dert. Cok vakit kaybettiriyor.