Are you a compositing or VFX artist using Nuke? Do you want to learn how to attach an object to a moving element or point in your scene? Look no further! Here's a step-by-step guide on how to do just that.

Step 1: Open your Nuke project and locate the moving element or point in your scene where you want to attach the object.

Step 2: Create a new Tracker node by right-clicking in the Node Graph and selecting 'Tracker' from the 'Other' menu.

Step 3: In the Tracker node, select the moving element or point in your scene that you want to track. Use the tracker controls and keyframes to track the movement of the element over time.

Step 4: Once the tracking is complete, connect the output of the Tracker node to a Transform node. The Transform node will be used to apply the tracked motion to the object you want to attach.

Step 5: Create a new Axis node and position it where you want the attached object to be in the scene. This will serve as the anchor point for the object.

Step 6: Connect the Axis node to the input of the Transform node. The Transform node will now apply the motion from the Tracker node to the Axis, effectively attaching the object to the moving element or point in the scene.

Step 7: Now, you can connect the object you want to attach to the Axis node. This can be an image, text, 3D model, or any other element you want to incorporate into your scene.

Step 8: Adjust the position, scale, and rotation of the attached object using the Transform controls to ensure it aligns perfectly with the tracked movement.

Step 9: Preview the result and make any necessary adjustments to ensure a seamless integration of the attached object into your scene.

Congratulations! You've successfully attached an object to a moving element or point in Nuke. This technique is commonly used in compositing and VFX to integrate elements into live-action footage or create dynamic visual effects.

Remember to save your project and consider using version control to keep track of your progress. Practice and experiment with different scenarios to master the art of attaching objects in Nuke. Happy compositing!