Neewer

Neewer 40100305 Metal Telescopic Mobile Phone Holder

Turn any telescope eyepiece into a smartphone astrophotography rig with a rock-solid metal adapter.

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Overview

The Neewer 40100305 Metal Telescopic Mobile Phone Holder is an afocal adapter that positions your smartphone camera directly over a telescope, spotting scope, or microscope eyepiece for through-the-lens photography. Built from aluminum alloy rather than the plastic found in most budget mounts, it provides the rigidity needed to maintain precise camera-to-eyepiece alignment — critical for capturing sharp images of the Moon, planets, or distant wildlife. The clamp accepts eyepieces from 26mm to 52mm outer diameter and phones from 53mm to 90mm wide, covering the vast majority of equipment combinations without requiring model-specific fittings.

In the field, this adapter earns its place by solving the fundamental problem of afocal astrophotography: keeping the phone camera centered and stable over the eyepiece. The dual lock-button system lets you secure the phone position and the eyepiece clamp independently, so adjusting one does not disturb the other. At 170g, it adds negligible weight to your setup, and the integrated 1/4"-20 thread means you can mount it on a tripod head for vibration-free exposures. Photographers working with spotting scopes for digiscoping birds or nature subjects will find it equally capable. The cold shoe mount is a thoughtful addition for attaching small accessories. This is a purpose-built tool for anyone who wants to capture what they see through an eyepiece without investing in a dedicated astro camera.

Key Features

Take telescopic photos with your phone: compatible with any telescope with an eyepiece outer diameter of 26 mm to 52 mm. With this telescopic phone mount, you can photograph Saturn, Jupiter or other astronomical objects with your smartphone

Impressive astrophotography photos: attach your mobile phone to a telescope and start taking photos of deep sky objects through the eyepiece with your phone

Universal phone holder: the phone holder has an adjustment range of 5.3 cm to 9 cm to hold a compatible phone securely in place, compatible with iPhone, Samsung and Sony phones, etc.

Easy to adjust: simply insert your phone into the phone holder, centre your phone's camera over the eyepiece, adjust the position of the phone holder based on the position of your phone camera and your phone size with the lock button of the phone holder and use the top lock button to secure it

Robust design: the holder is made of strong metal for improved durability

Specifications

Brand
Neewer
Model
ST-T01 (40100305)
Material
Aluminum Alloy
Phone Mount Width Range
53mm to 90mm (2.09" to 3.54")
Eyepiece Compatibility
26mm to 52mm outer diameter (1.02" to 2.05")
Dimensions
185 × 73.5 × 57mm (7.28" × 2.89" × 2.24")
Weight
170g (6.2 oz)
Mounting Options
Cold shoe mount, 1/4"-20 threaded hole
Color
Black

Frequently Asked Questions

It clamps onto eyepieces with outer diameters from 26mm to 52mm, which covers the vast majority of telescope, spotting scope, and binocular eyepieces on the market. Measure your eyepiece barrel before purchasing.
The all-metal construction and dual lock-button design hold the phone firmly once tightened. For exposures beyond a few seconds, vibration from wind or the mount itself is a bigger concern than slippage — pairing this with a remote shutter release or timer helps.
The phone clamp adjusts from 53mm to 90mm width. Most phones in slim cases will fit within this range, but bulky rugged cases may need to be removed. Measure your phone-plus-case width to confirm.
It works with any optic that has an exposed eyepiece in the 26-52mm diameter range — telescopes, spotting scopes, binoculars, monoculars, microscopes, and night vision scopes are all compatible.
The cold shoe lets you attach small accessories like a phone light, while the standard 1/4"-20 threaded hole allows you to mount the entire adapter on a tripod or other support for added stability during long observation sessions.