But the shield doesn’t protect the whole planet.
The reason they have to lower the shield for Tydirium is for that section on the ground. The entire Endor part of the movie takes place in this how-many-ever square mile area…
Actually I always thought the shield is emanated from that enormous dish, several miles from the landing platform.
Star Wars complete locations book says the same.
The Dish it is visibly aimed at the Death Star.
The shield emanating from the dish does not cover any part of the ground.
So I see no reason to deactivate it, or fly even close to that. The landing platform is several miles from the dish.
On that holoprojection, the shield should look needle thin near the surface.
Also the book says, “the above ground shield projector plus the undergound power generator and the shield projector complex is about 43 miles in diameter”. And according to that map the distance between the Dish and the landing platform is ca. 4 miles.edit:
here is the shield projector (page 140)
https://issuu.com/edusantosjr/docs/star_wars_-_the_new_essential_guide_bac1bad41ab16c
If they don’t have to lower the shield for Tydirium to land, why do they have to lower the shield for Tydirium to land? I mean, if Ady cuts that whole bit and has Han & Co just sneak onto Endor without a code clearance, then that makes sense. But currently they definitely need the shield to be down to land near the generator.