Hello Francois.

> Here you can find my last observation from this morning (2009-06-30) with
> Blue&Red (Astronomik) filters (I've also green).
> The long train is visible with the 2 filters.
> Difficult to say if this is dust or gaz!

Thanks for your follow-up. You are right: currently we cannot rule out either
hypothesis. I think that in the next weeks the situation will be somehow
cleared.

With kind regards,
Giovanni Sostero