[Quark (Trevor)]

Hi All,

Imaged Saturn last night in rather ordinary seeing but have resolved the NNTrZ dark oval.



The dark oval is mid way between the CM and the P limb. I also note a bright spot close to the CM in the NNTrZ. Both of these features are best seen in my R channel data, the seeing just wasn't good enough to resolve these features in RGB.

I have measured the dark oval to be at Lat +45.7 L3 38.8.



Have added this data point to my spreadsheet & drift chart and attached my drift chart.



I also note from my spreadsheet that the dark oval has drifted a complete rotation of Saturn between Jan 23rd 2013 and May 8th 2013 ( from an L3 of 53.3 to an L3 of 54.1) a period of 15 weeks. Therefore its drift rate over this 15 week period (105 days) has been 3.4 degrees/day.

Thanks for looking.


Regards
Trevor