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Alignment in three axes, held by one clamp

The best telescope phone adapters for 2026

A phone held to an eyepiece will photograph the Moon, and everyone discovers that within a week of buying a telescope. What they also discover is that holding it steady while pressing a button is nearly impossible, and that the phone camera has to be centred on the eyepiece within a fraction of a millimetre or the frame goes black at the edges. A phone adapter exists to hold that alignment, and the ones that do it well share a property the photographs rarely show: adjustment in three axes, so that the camera can be moved across, along and away from the eyepiece independently. An adapter with a single clamp and no fine adjustment turns the problem into a wrestling match in the dark. Two dimensions decide compatibility. The eyepiece diameter range the collar accepts has to cover the eyepiece actually used — a wide-field two-inch eyepiece has a barrel far larger than a small one — and the phone width range has to cover the phone with its case on, or the case comes off every session. The other quiet specification is the camera offset: phones with camera modules near the corner need more travel than those with a centred lens, and some adapters cannot reach. Read the rigidity, because a plastic arm that flexes loses the alignment it took five minutes to find. We compare eyepiece diameter range, phone width range, three-axis adjustment, camera offset travel, clamp rigidity and case clearance.

The parts here, column by column

  1. Celestron NexYZ three-axis smartphone adapter on an eyepiece

    Celestron NexYZ 3-axis universal smartphone adapter (81055)

    A patented three-axis phone adapter whose X, Y and Z knobs align the camera to the eyepiece in seconds, for eyepiece bodies of 35 to 60 mm.

    Eyepiece diameter range
    35 to 60 mm, as the maker publishes them
    Phone width range
    The listing gives none as a figure
    Three-axis adjustment
    Three axes — X, Y and Z — each with a tensioned knob
    Camera offset travel
    Not published by the maker.
    Clamp rigidity
    Metal frame with a polymer housing
    Case clearance
    Not published by the maker.
    Amazon reference
    B07D7V3B8M (same reference on 6 Amazon marketplaces)
    EAN
    0050234810555
    • Three independent adjustment axes, which is what actually makes alignment quick
    • The widest eyepiece range on this shelf at the top end — up to 60 mm
    • Its eyepiece range starts at 35 mm, so slim eyepiece bodies fall below it

    Best for: Frequent digiscoping where the setup time of a cheaper clamp becomes the obstacle

    ≈ $62 / £59 / €59
    Check price on Amazon
  2. LAKWAR LK-19 universal smartphone adapter for eyepieces

    LAKWAR LK-19 universal phone adapter

    A rubber-and-EVA phone adapter for eyepieces of 28 to 49 mm and phones of 65 to 105 mm, published with its dimensions and its weight.

    Eyepiece diameter range
    28 to 49 mm, as the maker publishes them
    Phone width range
    65 to 105 mm, as the maker publishes them
    Three-axis adjustment
    Not published by the maker.
    Camera offset travel
    Not published by the maker.
    Clamp rigidity
    Soft rubber and EVA, to protect the phone from scratches
    Case clearance
    Not published by the maker.
    Amazon reference
    B08YWV7V8C (same reference on 6 Amazon marketplaces)
    EAN
    0742186860183
    • Four figures published: two ranges, the dimensions and the weight
    • The rotating holder avoids pressing the phone’s side buttons, which is a real annoyance
    • The description is shared word for word with another listing here

    Best for: Occasional phone photography on binoculars, a spotting scope or a monocular

    ≈ $10 / £10 / €14
    Check price on Amazon
  3. CAM2 universal telescope smartphone adapter

    CAM2 wyj-001 universal phone adapter

    A two-part phone adapter for eyepieces of 28 to 49 mm and phones of 65 to 105 mm, with a rotating and detachable phone holder.

    Eyepiece diameter range
    28 to 49 mm, as the maker publishes them
    Phone width range
    65 to 105 mm, as the maker publishes them
    Three-axis adjustment
    Not published by the maker.
    Camera offset travel
    Rotatable and detachable, to avoid the side buttons
    Clamp rigidity
    Not published by the maker.
    Case clearance
    Not published by the maker.
    Amazon reference
    B0B4G4B3DN (same reference on 5 Amazon marketplaces)
    EAN
    0717522502461
    • Both ranges published, which is what decides compatibility
    • A detachable holder makes it quicker to take the phone off between shots
    • The stated quantity of rubber rings disagrees with the otherwise identical listing beside it

    Best for: A first, cheap attempt at phone photography through an eyepiece

    ≈ €9
    Check price on Amazon
  4. SOLOMARK metal smartphone adapter and tripod mount

    SOLOMARK QHAP062 metal phone adapter

    A metal phone adapter with a tripod mount, for eyepieces of 28 to 47 mm and phone widths of 54 to 90 mm.

    Eyepiece diameter range
    28 to 47 mm, as the maker publishes them
    Phone width range
    54 to 90 mm, as the maker publishes them
    Three-axis adjustment
    Not published by the maker.
    Camera offset travel
    Not published by the maker.
    Clamp rigidity
    Metal, per the maker
    Case clearance
    Not published by the maker.
    Amazon reference
    B0188KP6T8 (same reference on 5 Amazon marketplaces)
    EAN
    0601490406930
    • A metal body is stiffer than the rubber and EVA adapters on this shelf
    • The phone range starts at 54 mm, the narrowest here, which suits small phones
    • The phone range stops at 90 mm, below the largest current handsets

    Best for: A smaller phone on a telescope or spotting scope, where stiffness matters

    ≈ €16
    Check price on Amazon
  5. Surplex universal smartphone adapter with aluminium body

    Surplex AMOUNT0001 universal phone adapter

    A phone adapter combining an aluminium body with a PA plastic clamp, accepting eyepieces from 25 mm and phones up to 100 mm wide.

    Eyepiece diameter range
    25 to 48 mm, as the maker publishes them
    Phone width range
    54 to 100 mm, as the maker publishes them
    Three-axis adjustment
    Not published by the maker.
    Camera offset travel
    Not published by the maker.
    Clamp rigidity
    Aluminium, full metal housing per the maker · High-strength PA plastic · Covered in soft material to protect phone and instrument
    Case clearance
    Not published by the maker.
    Amazon reference
    B07DXTX6JH (same reference on 5 Amazon marketplaces)
    EAN
    0753610969457
    • The widest eyepiece range on this shelf at the low end — down to 25 mm
    • Aluminium body with a plastic clamp: stiff where it matters, forgiving where it touches the phone
    • The top of the eyepiece range, 48 mm, excludes the fattest wide-field bodies

    Best for: Slim monocular and binocular oculars that a 28 mm minimum would not grip

    ≈ £10 / €11
    Check price on Amazon
  6. QWORK all-metal telescope phone adapter

    QWORK WD42582 phone adapter

    An all-metal phone adapter for eyepieces of 28 to 47 mm and phones of 60 to 100 mm, padded with rubber and EVA where it grips.

    Eyepiece diameter range
    28 to 47 mm, as the maker publishes them
    Phone width range
    60 to 100 mm, as the maker publishes them
    Three-axis adjustment
    Not published by the maker.
    Camera offset travel
    Not published by the maker.
    Clamp rigidity
    Full metal and aluminium, per the maker · Rubber sleeve and EVA at the phone clamp
    Case clearance
    Not published by the maker.
    Amazon reference
    B0DKP2V9HW (same reference on 6 Amazon marketplaces)
    EAN
    0795973843746
    • All-metal construction at one of the lowest prices on this shelf
    • Both ranges published, which is the essential information
    • Neither weight nor dimensions is published

    Best for: A stiff, cheap adapter for a mid-sized phone on a standard eyepiece

    ≈ €7
    Check price on Amazon
  7. DÖRR universal photo adapter for spotting scopes and binoculars

    DÖRR Universal photo adapter (538216)

    A plastic phone adapter for eyepieces of 26 to 54 mm and phones of 70 to 85 mm, with a 1/4 in socket so the whole assembly can go on a tripod.

    Eyepiece diameter range
    26 to 54 mm, as the maker publishes them
    Phone width range
    70 to 85 mm, as the maker publishes them
    Three-axis adjustment
    Not published by the maker.
    Camera offset travel
    Not published by the maker.
    Clamp rigidity
    Hard-wearing plastic · Non-slip mounting, per the maker
    Case clearance
    1/4 in socket, named by the maker
    Amazon reference
    B0FMDZM4WK (same reference on 6 Amazon marketplaces)
    EAN
    4000461107238
    • The only adapter here with a published tripod socket, and it names the thread
    • The widest eyepiece range on this shelf after the Celestron — up to 54 mm
    • The phone range is the narrowest here: 70 to 85 mm only

    Best for: Digiscoping from a tripod, where the adapter itself can be supported

    ≈ €27
    Check price on Amazon

Any figure written into the body of this page was true on the day it was written. The amount shown next to each instrument is requested from the retailer as the page loads, and it is that amount, not the text, that stands.