This listing is for one of the universal digital camera lens adapter rings from a selection of 7 different adapter sizes. The adapter can be used to connect a digital camera to telescope's eyepiece barrel that has 1.25" diameter. The adapter has outer threads that can fit a digital camera with 28mm, 37mm, 43mm, 49mm, 52mm, or 55mm filter thread on the camera lens. You can choose one adapter from a choice of 7 product models.
The adapter can clamp to a telescope eyepiece barrel with external diameter less than 35mm. The adapter is secured on the eyepiece using the three screws. These screws are also used to adjust the optimum position of your camera in relation to the telescope eyepiece. You can then start to take pictures through the telescope.
Please select one of these adapters according to the thread diameter of your camera lens.
Description:
- Attached to the filter threads of camera lens. Please select a correct size based on the filter-thread diameter of your camera lens (see note below).
- Suitable for 1.25" telescope eyepieces.
- Materal material
- Inner diameter: 34.5mm (Note: this is the maximum outer diameter of telescope eyepieces these adapter rings can go over).
Note: The lens filter thread diameter can be different from the camera lens diameter as marked on the lens. As shown in the image below for example, the camera has 45mm lens, but the filter thread diameter is actually 52mm. So please measure the thread diameter on the front of your camera lens then choose a correct adapter ring based on the measurement.
How to attach this adapter to camera lens:
(Note: this camera has 45mm lens, but 52mm adapter ring is needed in order to fit its filter threads)
The adapter ring can clamp on telescope eyepieces which have 1.25" outer diameter:
(Note: the overall outer diameter of eyepiece should be less than 35mm for these adapter rings to fit; remove the rubber eyecup on top of eyepiece if necessary)
28mm camera lens filter thread adapter:


37mm camera lens filter thread adapter:


43mm camera lens filter thread adapter:

49mm camera lens filter thread adapter:

52mm camera lens filter thread adapter:

55mm camera lens filter thread adapter:

Note: these adapters can clamp to the outside tube of 1.25" telescope eyepieces, or 1.25" T-adapters, as in this example for the attachement of compact cameras to riflescopes.