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  1. #1
    MrMan's Avatar
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    Default Bringing out colours



    I have recorded many videos of the moon and jupiter and taken many pictures they are lovely but I have a few questions.

    1) When recording a planet (lets say jupiter), what will I have to increase to bring out colour on jupiter? (Apart from exposure, gamma, brightness, constrast) I do not have a colour increaser option.

    2) I am having trouble using registax to bring out images. When I stack them jupiter looks perfectly round but slightly blurred detail. When I adjust the wavelet, it goes TOO pixely. Is this because my frames are not good? I am wondering how people get perfectly professional stacked images from amature recordings. (Registax 6 New version)

    Thank you

  2. #2
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    Default

    How long are your exposures?

    The longer your exposure, the more frames, the better quality result from wavelet processing. (Or so I've read)

    I am in the same place as you, I just started with Registax and trying to get over the learning curve. Do you post process with Photoshop or GIMP?

    You can bring out more color that's already there by playing with the curves in Photoshop or GIMP.

  3. #3
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    Default

    For increasing colour, the control you are looking for is saturation. I usually increase saturation a tad. You have to be careful with it, because you can easily make the image look unnaturally garish and poster-y if you go too far.

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  4. #4
    MrMan's Avatar
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    Default

    Thank you, hopefully if the skies clear up tonight i will try Jupiter and no I do not use photoshop or GIMP. So what you are saying is that I should keep the exposure low (minus figures/darker image) ?
    I am having a hard time bringing out the Great Red Spot

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    Default

    It would help if I knew what kind of camera you are using... You mentioned video, so I will keep my comments to video (webcams, etc.)

    But in general terms, you need VERY SHORT EXPOSURES. Jupiter spins fast! For video, 1/30 sec exposures are best, but 1/15 sec exposures will work. Increase the gain to increase the image brightness -- not the exposure time. Registax works best with at least 1000 frames (images) or more. Wavelets are very powerful and should be used SPARINGLY. I rarely go above level 3. I NEVER use all the wavelet levels for anything. If you are have problems, you may want to try AviStack V2 (also free). I personally think it is easier to use.

    Hope this helps. If you give us more specific information (camera, scope, processing steps) we may be able to give you more specific advice.

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  7. #6
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    Default

    It is a webcam and It does not have the option to increase the gain. If I do not set the exposure to a minus figure, jupiter will just appear white.

 

 

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