mirror ball tripod cap (nadir cap)

You can cover-up that nadir in your panorama without using complicated scripts, by following these easy steps. I'm using Photoshop to create a mirror ball nadir cap, but any image editor that supports layers can be used to produce this effect.

Step1 - Duplicate your equirectanglar image on a new layer

Step 1 - Duplicate layer

Step 2 - Place a guide just above your tripod on the top layer

Step 2 - Add a guide

Step 3 - Select the area above the guide

Step 3 - Select the panorama

Step 4 - Use the "Free Transform" tool to create your tripod cap by selecting the top-center handle and dragging it all the way to the bottom of your image.

Step 4 - Free transform

You're done. If you place text just below the guide it will appear around the edge of your tripod cap.