timthelder
July 8th, 2008, 06:02 AM
Soon to be sub-titled, Tim's Jupiter thread...lol.
I thought I would post a few images at different fps, and stack sizes for a comparison for those using registax...I actually took a few notes as I was processing these, maybe some will find it helpful.
These are with the DMK21au04as cam, using the 235mm SCT.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_2.jpg
The final stacksize for processing on this image is 1,865 frames, taken , @ 60fps.
The alignment procedure started with 3,229 frames. With the quality filter in registax set to default,which is 80%. As you can see it only kept a liitle over half of the frames for processing.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_2-crop.jpg
This is a crop of the above image. If you look closely at the center of the image you can see where I placed my alignment point/box.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_4.jpg
Moving right along, this image and the following images are after adding a 2.5x powermate to the imaging train. The seeing on 6.7.08, was about an 8, I hated to waste the opportunity to get in a little closer....Starting stacksize about 3,200 frames, after aligning, 2,609 left for processing.
When placing the alignment point, I try and use the smallest alignment box possible, this seems to give the best results. When using a larger alignment box, such as one larger enoughto encompass the whole planet, when I try to sharpen the image using wavelets, I get these concentric circles, which are undesireable and have been unable to process out of the image.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_5.jpg
A.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_55.jpg
B.
These are the same images processed using a different alignment point. In image 'A', I used a point in one of the bands, In image 'B', I used the shadow that Io was casting for the alignment point. If you examine the two images you can see the image is sharpest, closest to the point of alignment. Image 'A' was a stack of 1,912 frames, image 'B' a stack of only 837 frames.
21102111
The image on the left is a stack of 391 frames, on the right, 1,580 frames, using the same alignment point as above.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_8.jpg
This is a stack of 3,034 frames, @ 15fps, out of a possible 3,429 frames. When choosing an alignment point in registax, it seems to like it to be an area of contrast or detail. You can use the frame quality box to to monitor the quality of the alignment point you choose within the image. This is displayed in the automatic drop down box, to the right of your displayed image. Try and choose an alignment point with the highest # frame quality. Make sure your quality estimator is set to 80%, if you don't get many aligned frames to work with, and you really want the image, lower the percent. If you get a substantial amount of images, you can try raisng the quality percent to drop out some of the lower quality frames. Remember to start all over with the processing if you choose to do this.
After the stacking the wavlets are at a ratio of 1:1 to 6:1. I like to think of it as fine to coarse sharpening. The better the quality of the image, the more you can effectively use the wavlets. After you are satisfied with your wavlet processing, click the 'do all' icon, then re-align with processed. This will better stack the images. After the re-aligning process, you can click the'do all' icon, then save the image, or you can move on to the 'final' stage of processing. I do any final processing to the image in photoshop possibly to adjust the brightness/contrast, or smartsharpen if needed.
I hope this helps, cheers!
I thought I would post a few images at different fps, and stack sizes for a comparison for those using registax...I actually took a few notes as I was processing these, maybe some will find it helpful.
These are with the DMK21au04as cam, using the 235mm SCT.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_2.jpg
The final stacksize for processing on this image is 1,865 frames, taken , @ 60fps.
The alignment procedure started with 3,229 frames. With the quality filter in registax set to default,which is 80%. As you can see it only kept a liitle over half of the frames for processing.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_2-crop.jpg
This is a crop of the above image. If you look closely at the center of the image you can see where I placed my alignment point/box.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_4.jpg
Moving right along, this image and the following images are after adding a 2.5x powermate to the imaging train. The seeing on 6.7.08, was about an 8, I hated to waste the opportunity to get in a little closer....Starting stacksize about 3,200 frames, after aligning, 2,609 left for processing.
When placing the alignment point, I try and use the smallest alignment box possible, this seems to give the best results. When using a larger alignment box, such as one larger enoughto encompass the whole planet, when I try to sharpen the image using wavelets, I get these concentric circles, which are undesireable and have been unable to process out of the image.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_5.jpg
A.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_55.jpg
B.
These are the same images processed using a different alignment point. In image 'A', I used a point in one of the bands, In image 'B', I used the shadow that Io was casting for the alignment point. If you examine the two images you can see the image is sharpest, closest to the point of alignment. Image 'A' was a stack of 1,912 frames, image 'B' a stack of only 837 frames.
21102111
The image on the left is a stack of 391 frames, on the right, 1,580 frames, using the same alignment point as above.
http://i131.photobucket.com/albums/p283/tmthylockhart/Jupiter_07-06-08_8.jpg
This is a stack of 3,034 frames, @ 15fps, out of a possible 3,429 frames. When choosing an alignment point in registax, it seems to like it to be an area of contrast or detail. You can use the frame quality box to to monitor the quality of the alignment point you choose within the image. This is displayed in the automatic drop down box, to the right of your displayed image. Try and choose an alignment point with the highest # frame quality. Make sure your quality estimator is set to 80%, if you don't get many aligned frames to work with, and you really want the image, lower the percent. If you get a substantial amount of images, you can try raisng the quality percent to drop out some of the lower quality frames. Remember to start all over with the processing if you choose to do this.
After the stacking the wavlets are at a ratio of 1:1 to 6:1. I like to think of it as fine to coarse sharpening. The better the quality of the image, the more you can effectively use the wavlets. After you are satisfied with your wavlet processing, click the 'do all' icon, then re-align with processed. This will better stack the images. After the re-aligning process, you can click the'do all' icon, then save the image, or you can move on to the 'final' stage of processing. I do any final processing to the image in photoshop possibly to adjust the brightness/contrast, or smartsharpen if needed.
I hope this helps, cheers!