I'm afraid that my contribution is nowhere near as good as Andrews offering but here it is anyway.
These were taken on Sat. 15th April. My first shadow transit ever.
With poor seeing, about 3 - 3.5, Jupiter was in a virtually constant writhing state. But I could just make out the shadow during moments of steadiness, so I went ahead and started filming anyway. As the night wore on, the seeing improved so that the shadow was a definate black dot in the eyepiece. Image Shadow Transit 2 was taken when the seeing was a bit better. I used my Panasonic NV-DA1 Video Camera, a 12.5 ep with the 2" 2x barlow, optical zoom was used.
All avi's were downloaded to the hard drive via a TV card that only captures at 320x240. These are burned to a CD, then transfered to a faster computer for processing with Registax.
Shadow Transit 2 - 401 frames. Apart from wavelets, of which I only really use the last 3 layers, only a moderate amount of gamma and a touch of contrast was used. Quite a number of relatively good frames, concidering how bad the seeing was at that stage.
Shadow Transit 2 selected frames - 156 frames this time. I spent conciderable time selecting only the very best, thinking that it may improve the results. The only real difference I can notice is some finer detail in the festoons.
Shadow Transit 5 - 217 frames. Once I adjusted wavelets 4, 5 and 6, graininess and onion rings were a real problem. To combat the graininess, I changed layer 1 to -5 which softened the image. Big gamma adjustments cut down the onion ring and really brought out the shadow. I also lightened the contrast a bit too.
If you could have seen the speed wobbles on Jupiter during the Optimize stage of Registax, you would wonder that any sort of image could have been made.
Thanks for giving us a chance to enter the comp.
