The adapter is now properly seated. You can thread a nosepiece adapter into it and insert it in your focuser. Remove the adapter the same way you would remove a lens that is attached to the camera.

YOU DO NOT NEED TO REMOVE THE ADAPTER TO TAKE PICTURES ONCE YOU HAVE FOCUSED. Just focus and leave it in place.

If your focuser is not pre-threaded you can use a 2" or 1.25" nosepiece adapter, and then insert your camera into the focuser the same way you would an eyepiece.

If you have a 2" focuser we recommend a two-inch nosepiece adapter. Our 2" adapter (Part SI-DP2; $42 CA) is highly recommended. It can be separated into two components and can be used with an SCT focal reducer with good results on a wide variety of telescopes. With the SI-DP2 a 0.63 reducer operates at 0.69, giving you a significantly faster focal ratio and wider field of view.

If you only have a 1.25" focuser we offer the SI-DP1 optional accessory. The SI-DP1 fits any 1.25" focuser. You can screw a focal reducer into the end of the DP1 (Part SI-FR1) as well to achieve faster focal ratios and wider fields of view.