Baader Hyperion DT-Ring - SP54/M49

This ring is designed for afocal photography, also known as digiscoping. It allows you to securely attach a digital camera (with its lens on) to a Baader Hyperion eyepiece to capture images through the telescope.

Minimizing the distance between the eyepiece's last lens element and the camera's front lens element is critical for reducing vignetting. A shorter light path ensures the entire camera sensor is illuminated, preventing dark corners in your photos and producing a brighter, more even image.

The Baader Hyperion DT-Ring SP54/M49 is specifically designed for Baader Hyperion eyepieces. These eyepieces feature an SP54 male thread underneath their removable rubber eyecups, which this adapter threads onto directly.

The ring has an M49 male thread on the camera side. It screws directly into the 49mm filter threads on the front of a camera lens. If your camera lens has a different filter thread size (e.g., 52mm or 58mm), you will need a simple, inexpensive step-up or step-down ring to match the M49 thread.

No. This adapter is strictly for afocal imaging where the camera lens remains attached. For prime-focus imaging (where the telescope acts as the camera lens), you would need to remove the camera lens and use a camera-specific T-Ring and a T-adapter instead.

Vignetting occurs when the light cone exiting the eyepiece is too narrow or too far away to cover the camera's sensor, causing the image corners to appear dark. By placing the camera lens as close as physically possible to the eyepiece, the Baader Hyperion DT-Ring ensures that the projected image circle is large enough to provide full illumination, significantly improving image quality.