Moon shadow?

[northcanadian]

Good Morning

Having problems with focussing (dbk21 and 9.25sct), but managed to get this...468 frames. At first I thought another bug had landed on my laptop, but is it a moon shadow?

Thanks again

Cheers

[JohnnyD333]

It could be a moon, the Galilean moons transit quite often across Jupiter. The easiest way to find out is to find out when you took the photo, use Stellaruim or Starry Night, and match up the time of your photos and the software. It will show you where the moons are.

[northcanadian]

Thanks JohnnyD333:

Looks like it was Ganymede...the other was Io. I had no idea you could do this with Stellarium. It's awesome...now I can check ahead to try image the GRS!

Again thanks

Cheers