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  1. #1
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    Default Learning curve continues..... M81



    I think I was a little heavy on the processing this time.

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  3. #2
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    Default

    Probably need to decrease the color saturation, but otherwise -- A VERY NICE IMAGE.

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  5. #3
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    Quote Originally Posted by akjudge View Post
    Probably need to decrease the color saturation, but otherwise -- A VERY NICE IMAGE.

    Jim
    Took your advice, here's what it looks like now. I think it looks better. Also removed a couple stars.


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  7. #4
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    Default

    I like the colours in the second version. Those SCTs sure have lots of magnification!

    The core is pretty saturated with no detail. Your M31 was similar. When stretching the image, make sure that you don't let the top end of the curve get saturated. I can't get any detail out of the core at all. There may be some detail in the stacked original. If so, it is worth trying to save it.

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  9. #5
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    WOW Lonnie you have one more today !
    so productive you are , keep us posts !!
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    Your on a roll,Bud.Great progress!
    KLU
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    Default

    Excellent work, Lonnie. Thanks for sharing.
    -Nick

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    Quote Originally Posted by KeithBC View Post
    When stretching the image, make sure that you don't let the top end of the curve get saturated.

    Hello Keith , may you teach me ?
    The stretching means the "CURVE" function in PS right ??
    Is it the one in my attachment screen copy ?
    what do you mean the top end of the curve cannot get saturated ?
    It seems the image can change once I move the line , and I can move it like a curved line . But how do I know the saturation ?? And what is the horizontal axis and verticle axis represent acatully ? what is the bottom two figure ( input amnd output ) means ?
    so many questions , hope you would like to answer my this newbie question .
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    Great photo Lonnie.
    SXINIAS

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    Default

    Quote Originally Posted by MANDII View Post
    Hello Keith , may you teach me ?
    The stretching means the "CURVE" function in PS right ??
    Is it the one in my attachment screen copy ?
    what do you mean the top end of the curve cannot get saturated ?
    It seems the image can change once I move the line , and I can move it like a curved line . But how do I know the saturation ?? And what is the horizontal axis and verticle axis represent acatully ? what is the bottom two figure ( input amnd output ) means ?
    so many questions , hope you would like to answer my this newbie question .
    You want to avoid letting the curve go off the graph. In the first example below, the top end of the graph is saturated. All the light data values in the last three squares will come out as pure white. In the middle example, the bottom is saturated. All the dark values will come out as pure black. The third example shows a well-stretched curve with no part of the curve off the scale. No data has been lost.
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