This is the third special effects storyboard for the final episode, The Dorcons. Only 8 of the 15 shots in this board are illustrated- the others are repeats of previous shots, some with different optical effects (which would be added in post production).
The Dorcon spaceship looks a little different in these early designs - but the colours and overall configuration are similar.
Scene 66, slate 26X. Repeat sc60 20X.
Scene 68, slate 27X. Four Eagles in formation - first three peel off.
Scene 70, slate 29X. The remaining three Eagles fire boosters and race for home.
Scene 73, slate 30X. Distant b/g explosion followed by another explosion in middle distance. Final explosion demolishes f/g building.
Scene 80, slate 31X. Pan across smoking ruins.
Scene 84, slates 32X. Blue light beam leaves Dorcon ship.
Scene 84A, slates 33X. Blue beam disappears behind smoking Alpha buildings and wipes off.
Scene 89, slates 34X. Repeat scene 84 32X.
Scene 89A, slate 35X. Repeat Sc 84A 33X but hold beam on.
Scene 90, slate 36X. Repeat Sc 84 32X in reverse wiping beam off
Scene 90A slate 37X. Repeat Sc 84A 33X reverse beam
Scene 109 slate 38X. Establish Dorcon ship in space - slow track in
Scene 141A slate 39X. Repeat Sc 84 32X
Scene 141B slate 40X. Repeat Sc 15 6X with blue beam. It wipes off.
Thanks to James Winch