Hello,
From the series of avi’s covering the recent occultation of Uranus by the Moon, I plotted, as faithfully as I could, the positions of Uranus against the lunar limb, to show the “path” of Uranus as it approached the limb.
Image inventory:
The disc of Uranus processed in Registax from an avi leading up to the occultation.
The normally exposed lunar limb from an avi immediately after the disc of Uranus disappeared behind the lunar limb.
A series of frames from several avi’s leading up to the occultation. These showed the position of Uranus relative to the grossly over exposed lunar limb.
The ‘scope was tracking on Uranus and the lunar limb crept up on the planet’s disc in each successive avi.
When I plot the disc of Uranus against the correctly exposed lunar limb, by overlaying frames from the approach avi’s, to match the lunar limb profile features, the resultant path of Uranus appears curved, getting steeper towards the point of contact.
I wasn’t expecting this?
EDIT: Added an image showing how I performed the registration.
Cheers
Dennis