[...]
Mehrpack, I'm not entirely sure I understand you, but I matched the star's size in the original. When it is covered by an asteroid it just lessens the lensflare because the asteroid isn't quite big enough to block out the whole light source. If you are talking about the point of light that seems obvious, I'm working on that. The plugin I'm using can only seem to work with points of light...
[...]
hi,
ok i try to descripte it better.
as the video start, the camera begin go move and the asteriod fly before the sun.
first you see the light is around the asteriod, as the asteriod move more to the middle of the sun, the light is blocked but the most of the sun is still visible.
you see now that the image of the sun and the light of the sun have two different sizes.
on 32 second is the next good example to see it.
the peak of asteriod came into the sun, the asteriod only cover maybe 30%/40% of the sun, but the light fade out. on 33 second the asteriod now cover 40%/50% but the now the light is completly blocked.
and that looks odd, because the sun should still outshine the asteriod.
here some screens:
1. the sun outshine the asteriod and its shinny *g*

2. here you see now, that the asteriod begin to block the light to the camera out and how big the source really is, compared to the image of the sun

3. now the asteriod block it completly and the light to the camera is blocked

i hope that help you

Mehrpack