Altitude: 0° horizontal, 90° straight up. Camera pointing direction describes the lean; Azimuth aligns the overlay with the image.
VirtualSky reference circle size and position. The image-processing circle and offsets in Config are separate settings.
Recovering camera pointing resets latitude/longitude offsets to zero.
If stars still do not line up after a normal solve, enable this and solve again. The correction is applied only when validation confirms an improvement. Toggle to compare; only the overlay changes. Save remembers your choice.