You have good detail there, but on my LCD screen, the image looks a little dark? You have also captured a nice Galilean moon shadow going on as well that looks very nice and sharp too.
Nice Lester. There is good detail there but same for me as Dennis, very dark. The limbs look as though they have been clipped from your contrast adjustment. Can you post an unadjusted image to see what it looks like straight from registax?
However you can see on both east/west limbs where the "darkness" is creeping into both the northern and southern equatorial belts and I'm sure you will find there is considerable east/west and polar limb extinction.
What capture program are you using Lester and do you remember what your gain, gamma, brightness and saturation settings were?
Hi Lester, the picture publisher reprocess is a BIG improvement, brighter with more detail coming through.
It looks like you are under-exposing and need to push up your gain - more like 50%. If possible you could try a faster exposure than 1/10th second even if you need more gain and it appears grainier of the screen. Under-exposure contributes to the onion rings and I'm beginning to conclude that using too long an exposure (eg 1/10th instead of 1/20th) also contributes. At least that's been my experience.
I think a few have already suggested it, but you should download the 30 day trial of K3CCD tools (A google search would show you where) and try that as your capture program. It allows much more automation over filenames and has a lightmeter so you can ensure your capturing in the right range and a lot more ... it was well worth the ~$50 to keep it after 30 days.
Nice image. Paul is, however, quite right that the planet's suffering from a little "dimness".
You could probably do with bringing the brightness, gamma and gain up a touch during capture.
It's a delicate balancing act and you need to be careful you don't overexpose. Try gain around 40% and gamma 30-40% next time. I also work with brightness around 50%, but thses are just a guide.
I'm also using a 9.25, which is smaller aperture than yours, so with your extra light gathering ability you might not need to push it so hard?
Also, try adjusting gamma and brightness in Registax and post process. Gamma is good for brightening at the limb.
the settings I used are on the first entry in this thread
Of course. I saw that. I ws just checking you did
Polar extinction; yes, meaning that you have missed initial data because some of your capture settings have been set too low. I thought it might have been because you had set the contrast/brightness too low or dark point too high with a histogram somewhere during processing, but it doesn't appear so as your original is very dark on the limbs as well.
Do you have K3CCDTools? If not download V1 and the free key and give that a try. I don't know Amcap at all, but K3 comes with a histogram to assist in judging your gamma, gain and brightness settings. Keeping it around 240 to 250 (and that is pretty bright) seems to work the best for me.You won't get any limb extinction then, I'll let yo know.
Last edited by [1ponders]; 13-05-2006 at 10:53 AM.
Looks like your going to have to find that sweet spot between the horizontal banding & images too dark.........correction. This was at 5 fps...do you still get the banding/lines at 5 fps ?
I don't get horizontal lines at 5 fps. But I think its the settings that I have got to get a handle on, cause sometimes 10 fps is okay.
Originally I was producing images too bright to stop onion ring effect, but then the end result was a image that was washed out with not much colour or detail.
Then I produced too dark an image to acheive more contrast and colour, but Jupiter looked more like an Onion (10 and 15 fps were worse than 5 fps).
I have just copied K3CCD v1 and now got to wait for my wife to get home cause there is 12 extra icons on the desktop and none of them will open the program.
Once you've got the neximage plugged in click on the video capture tab at the top left of the page and then scroll down to the bottom option and click on that.
That tells K3ccd to use the camera that's plugged in.
![[1ponders]'s Avatar](../vbiis/customavatars/avatar45_9.gif){kind=avatar}
But I think its the settings that I have got to get a handle on, cause sometimes 10 fps is okay. 
(10 and 15 fps were worse than 5 fps).
