- 3-axis adjustment is the biggest quality-of-life upgrade — it lets you center your phone over the eyepiece in seconds instead of fumbling.
- Built-in Bluetooth remote eliminates blur — the SVBONY SV214 Pro includes one; others require a separate purchase.
- Check your eyepiece diameter before buying — most adapters fit 25-48mm, but a few have narrower ranges.
- Budget picks genuinely work — the Omegon Easypic produces great Moon shots at a fraction of the price of premium options.
- Remove bulky phone cases — they can prevent a secure fit on clamp-style adapters.
A smartphone telescope adapter clamps your phone to a telescope eyepiece so you can photograph or video through the optics — a technique called afocal photography. The best ones hold your phone steady, align quickly, and fit the widest range of phones and eyepieces.
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Whether you want to capture the Moon, share Saturn's rings with friends, or document a bird through a spotting scope, a phone adapter is the cheapest entry point into astrophotography. The difference between a $15 budget clamp and a $50 precision mount is real — but both can produce excellent results when used correctly.
We've reviewed 7 adapters from the most popular brands, covering every price point. Here's what we found.
What to Look For in a Phone Adapter
The three things that matter most: (1) eyepiece diameter compatibility — does it fit your specific eyepiece? (2) 3-axis adjustment — does it let you move the phone X/Y/Z to center it? (3) clamp strength — will it hold a modern large phone without slipping?
Before we get into individual reviews, here's a quick breakdown of the key specs:
- Eyepiece diameter range — Standard 1.25in eyepieces measure about 30-32mm outer diameter. Most adapters fit 25-48mm, which covers nearly everything. Wider spotting scope eyepieces can run to 60mm.
- Phone width range — Most adapters fit 53-98mm wide phones. That covers everything from an iPhone SE to a Galaxy S24 Ultra. Check this if you have a large phone in a bulky case.
- Axis adjustment — A simple 2-axis adapter lets you move the phone left/right and in/out. A 3-axis also lets you move it up/down. The difference is significant: 3-axis alignment is much faster.
- Material — Metal adapters last longer and hold heavier phones better. Plastic works fine for lighter setups.
- Bluetooth remote — A remote shutter eliminates hand-shake blur when tapping the screen. The SVBONY SV214 Pro includes one; for others it's a separate purchase.
1. Celestron NexYZ DX Universal Smartphone Adapter
The Celestron NexYZ DX is the most refined phone adapter on the market. It uses three independent thumbwheel knobs to adjust the X, Y, and Z axis independently, which sounds like a minor detail until you've used a 2-axis adapter and spent 10 minutes trying to center your phone over a 10mm eyepiece.
The spring-loaded platform grips your phone with even pressure on both sides, and the clamp release is smooth. It fits any eyepiece with an outer diameter from 30mm to 60mm, which means it also works on spotting scopes and larger binoculars, not just telescopes.
Best for: Serious afocal astrophotography, spotting scope digiscoping, and anyone who wants to minimize setup time at the eyepiece.
Watch out for: The premium price. If you're just shooting occasional Moon photos, a cheaper 3-axis adapter does the same job for less.
Read also: Can You Take a Picture With Your Phone Through a Telescope?
2. SVBONY SV214 Pro Universal Phone Adapter
The SVBONY SV214 Pro is the standout value pick in 2026. You get full 3-axis adjustment AND a Bluetooth remote shutter in one package. Most adapters at this price don't even offer 3-axis, let alone a remote.
The remote pairs quickly and works with both iPhone and Android. Using it makes a visible difference in photo sharpness: tapping your phone screen to fire the shutter introduces vibration that blurs planetary detail. With the remote, you can fire from a few inches away without touching the setup at all.
The clamp fits eyepieces from 28-48mm outer diameter, which covers all standard 1.25in and most 2in eyepieces. Phone width fits virtually any current smartphone.
Best for: Anyone who wants the complete solution without spending $50. Especially good if you're shooting planets where vibration kills detail.
Watch out for: The Bluetooth remote requires batteries and occasional re-pairing. Minor inconvenience, but worth knowing.
3. tridaptor Universal Digiscoping Adapter
The tridaptor stands out for two reasons: the 2.4in maximum eyepiece diameter and the extra-wide phone clamp. Most competitors max out at 48mm (about 1.9in) outer eyepiece diameter. The tridaptor's 2.4in rating means it works on larger spotting scope eyepieces that other adapters simply won't fit.
The all-metal body with 3-axis adjustment delivers precise alignment. If you use your phone in a thick protective case and have struggled with other adapters not opening wide enough, this one is worth considering specifically for that.
Best for: Large-phone users, spotting scope users with wide eyepieces, and anyone who wants a metal-bodied 3-axis adapter without the NexYZ price.
Watch out for: Slightly heavier than plastic alternatives. Not a problem for stable tripod setups, but adds weight to portable configurations.
If you shoot through a spotting scope (not just a telescope), you need an adapter that fits wider eyepiece diameters. The tridaptor (2.4in max) and Celestron NexYZ DX (60mm max) both handle spotting scope eyepieces. Most others don't.
4. Gosky Universal Spotting Scope Phone Adapter
Gosky has updated their flagship phone adapter for 2024 with a redesigned clamp mechanism. The 3-axis adjustment is smooth, and the build quality is solid. Gosky's background in spotting scope accessories shows: this adapter is explicitly designed for scope digiscoping workflows, not just telescope use.
The phone clamp opens wide enough for current flagship phones (even with cases in many situations), and the eyepiece mount fits standard 1.25in to 2in eyepieces well. It competes directly with the SVBONY SV214 Pro at a similar price point; the main differentiator is the SV214 includes a Bluetooth remote while this one does not.
Best for: Wildlife photographers using spotting scopes who also want to use the same adapter on a telescope. Good all-rounder at a mid-range price.
Watch out for: No Bluetooth remote included. If camera shake is a concern, budget an extra $8-10 for a separate BT remote.
5. SVBONY Universal Cell Phone Adapter Mount
SVBONY's standard universal mount is the workhorse of the lineup. Metal body, rubber-padded phone clamp, fits eyepieces from 25-48mm outer diameter. It covers the full range of standard telescope eyepieces and most binoculars.
This is the adapter to get if you want something reliable and affordable without spending on the SV214 Pro's premium features. The clamp knob is firm enough to hold a 6.7in phone steady without play, which is the most important functional requirement.
It works across telescopes, binoculars, monoculars, and spotting scopes, which makes it a versatile single purchase if you own multiple optical instruments.
Best for: First-time phone adapter buyers who want metal build quality without spending $30-50. Also good as a backup or secondary adapter.
Watch out for: The metal body adds weight compared to plastic alternatives. Fine for most setups, but something to consider on lightweight travel rigs.
You may also like: 6 Best Telescopes With Phone Adapters
6. Omegon Easypic Universal Smartphone Adapter
If you want the simplest possible setup, the Omegon Easypic delivers. There are no adjustment knobs to fuss with. You clip it onto the eyepiece, open the phone clamp, center your phone visually, and lock it. Done in about 20 seconds.
The trade-off for simplicity is precision. Without fine-axis adjustment, getting the phone camera perfectly centered over the eyepiece takes a bit more trial and error. For Moon photography where the target is large and bright, this is negligible. For tight planetary detail, a 3-axis model is more forgiving.
That said, the Omegon has a devoted following among visual observers who just want to grab a quick phone shot without setting up a full digiscoping rig. At this price, it's an easy recommendation as a starter adapter or casual companion piece.
Best for: Visual observers who occasionally want to capture an image. Beginners who want to try phone astrophotography without committing to a more complex adapter.
Watch out for: Not ideal for planetary photography where precise alignment matters. The lack of fine adjustment makes centering harder on small, bright targets like Jupiter and Saturn.
On adapters without fine-axis adjustment (like the Omegon), phone case thickness directly affects centering accuracy. Thin or no case gives you the most control over alignment.
7. Gosky Original Universal Phone Adapter Mount
The original Gosky mount has been a bestseller for several years for good reason. The built-in bubble level is a detail most competitors skip, and it's genuinely useful: knowing your phone is level removes one variable when trying to frame a shot through the eyepiece.
It fits phones from 55-100mm wide, which covers all but the thickest-cased large phones. Eyepiece compatibility runs to about 1.5in outer diameter, which fits standard 1.25in eyepieces well but may not work on wider 2in eyepieces depending on how they're shaped.
Where the newer Gosky Spotting Scope model (#4 above) edges this one out is in eyepiece diameter range and build refinement. But if you find this at a lower price, it remains a solid, proven choice.
Best for: Casual astrophotographers who want a proven, simple adapter with the handy bubble level feature.
Watch out for: The grip may not be strong enough for very large, heavy phones. Test the lock tension with your specific phone before heading out for a session.
Quick Comparison
- Best overall precision: Celestron NexYZ DX (~$50) — 3-axis, fits 30-60mm eyepieces
- Best value (full feature set): SVBONY SV214 Pro (~$30) — 3-axis + Bluetooth remote included
- Best for large phones / wide eyepieces: tridaptor (~$30) — fits eyepieces up to 2.4in
- Best for spotting scopes: Gosky Universal (~$35) — 3-axis, designed for digiscoping
- Best budget 3-axis: SVBONY Universal Mount (~$20) — metal body, 25-48mm range
- Easiest to use: Omegon Easypic (~$20) — no dials, 20-second setup
- Best proven classic: Gosky Original (~$30) — built-in bubble level, years of positive reviews
Tips for Better Smartphone Astrophotos
Getting the adapter is the easy part. Here's what separates decent phone shots from great ones:
- Use a Bluetooth remote shutter. Tapping the screen introduces vibration that blurs fine detail, especially on planets. A $10 Bluetooth remote solves this completely. The SVBONY SV214 Pro includes one; for others, pick up a separate remote.
- Let the scope thermalize. Bring your telescope outside 30-45 minutes before shooting. Temperature gradients inside the tube cause "tube currents" that blur the image even with a perfect adapter.
- Lock focus before attaching the adapter. Focus the eyepiece visually first, then mount your phone. Readjusting focus after mounting often shifts alignment.
- Shoot video and extract frames. On bright targets like the Moon, recording 30-60 seconds of video and selecting the sharpest frames produces better results than trying to nail a single shot.
- Use your phone's manual camera mode. Auto-exposure often overexposes the Moon. Lock exposure and ISO manually (or use a free app like ProCamera or Open Camera).
- Start with the Moon. It's the easiest target for afocal photography. Get your technique right on the Moon before trying Jupiter or Saturn.
Read also: Can You Take a Picture With Your Phone Through a Telescope? | Best Telescopes With Phone Adapters