Then I worked out that it must be the planets shadow being cast on its rings as the Suns light is blocked by the planets disc. ..Wow, how exciting it that!
When I took pictures of Saturn last month at opposition, the Suns light was directly facing Saturn and the rings were fully lit, now this is very interesting because it shows that you can see remarkable changes in the planets every time you look at them!
Image was taken on the 6th September with a 10inch Meade GPS Schmidt-Cassegrain telescope and a ZWO 120 MC-S camera with a 3x Barlow lens attached. An AVI movie was captured with 2500frames, stacked in RegiStax6, and processed in PS CS4.