Adapter Redleaf SOM-1 for mounting smartphones to spotting scopes, telescopes and microscopes

Redleaf SOM-1 is an adapter for mounting smartphones to spotting scopes, telescopes and microscopes. It creates a stable mechanical connection between a mobile phone and an optical eyepiece so that the phone camera aligns with the eyepiece axis. The adapter enables digiscoping, basic astrophotography and microscope imaging with handheld devices when used with compatible eyepieces and eyepiece diameters. The design focuses on mechanical compatibility and simple attachment to support field observation, birdwatching, amateur astronomy and educational microscopy.

Advantages

The adapter provides a secure clamp and adjustable alignment that reduces vignetting and misalignment of the camera relative to the eyepiece. It is compatible with a range of cylindrical eyepieces and accommodates most modern smartphones without touching phone buttons. The adapter's construction offers repeatable positioning for quick setup and stable imaging during observation sessions.

Suitable for

• Digiscoping with spotting scopes for wildlife and birdwatching
• Basic astrophotography with telescopes and eyepiece projection
• Microscope imaging for education and field microscopy
• Documenting observations and sharing images from field trips

Key specifications

• Compatibility: cylindrical eyepieces commonly used on spotting scopes, telescopes and microscopes
• Smartphone accommodation: adjustable clamp to fit most phone widths and camera positions
• Alignment control: adjustable optical axis centering to reduce vignetting
• Material: rigid mounting components for stable mechanical connection
• Attachment: thumb screws or similar manual fasteners for tool-free setup

How to use

Attach the adapter to the eyepiece by sliding the eyepiece into the adapter saddle and secure it with the provided fastening mechanism. Place the smartphone in the clamp, then adjust the phone position so the camera lens is centered on the eyepiece exit pupil. Make fine alignment adjustments while observing the live camera preview on the phone screen to minimize vignetting and ensure a full field of view. Tighten the fasteners to lock the position, and use the phone's camera app or a dedicated imaging app to capture photos or video.

Usage recommendations

For best results, use eyepieces with clear exit pupils and avoid excessive magnification that may reduce image brightness. Stabilize the optical instrument on a tripod to minimize motion blur and check smartphone camera settings (focus lock, exposure) before capturing images. Verify mechanical fit and do not overtighten clamps to prevent damage to the eyepiece or phone.