Jupiter image advice

[peterthebike]

I am making slow progress with my imaging, but would like some advice please on why it seems so dark on one of the poles? I use GIMP for post-processing and cannot seem to get a better image than this.

[cgarry]

It looks like you need to align your colour channels to counteract the atmosphere acting like a giant prism. You can do this in Registax with its 'RGB align ' function.

Cheers,

Chris

[peterthebike]

Chris, afraid not sure what to do with this. Can you give some guidance please? If it makes any difference I am using Registax 6.

[cgarry]

When you have stacked you image in Registax 6 it takes you to the Wavelet tab. On the right hand side of the window should be a box of buttons called 'Functions'. One of these buttons is 'RGB Align'.

Click on the 'RGB Align' button.

In the window that pops up, click on 'Estimate'

Registax should analyse the colour channels and shift them so they all line up. This just takes a few seconds.

Have you been using the wavelets to sharpen your image?

Cheers,

Chris

[peterthebike]

This is after using the wavelet settings by Paul Maxson and the RGB align estimate.

Unfortunately I don't understand how to use many of these settings and only enter values from advice.

[Bigeye]

Slide the bottom 2 wavelets up about half way and leave the rest fully to the left and it should look better than yours does. If it does carry on playing until you are happy but if it does not improve then something is wrong. Try restacking maybe.

The thing is you need to slide them about yourself rather than copy someone elses setting as every image will be different.

[cgarry]

The thing is you need to slide them about yourself rather than copy someone elses setting as every image will be different.

I agree with this completely. Even different levels of seeing can stop my usual Jupiter wavelet settings from working. You just need to get in there and play with them.

On the plus side it looks like the RGB align has done its job.

Cheers,

Chris

[Stargazer Jack]

With the second image, you can just see the GRS to the right of the planet which is good.

[peterthebike]

I uploaded the new file and managed to overwrite the one used in my last post. So you cannot compare this with the previous attempt, but this image is starting to look reasonable.

The previous attempt was not helped by me not selecting the layers for the wavelets!

Yet another thing I can't get my head around in Registax is the Resize Image function. Where I use the cropping area, this doesn't seem to have any effect. My guess is there is something I am doing wrong here.

[peterthebike]

With the second image, you can just see the GRS to the right of the planet which is good.

I hadn't spotted that! It is the first time I have seen it either through my telescope, or in an image.