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Mars too bright

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12 years 8 months ago - 12 years 8 months ago #93629 by Seder
Replied by Seder on topic Re: Mars too bright
thank you I'll try it as soon as sky will be clear
As I understand I have to reduce red channel in webcam settings, right?
Last edit: 12 years 8 months ago by Seder.

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12 years 8 months ago #93631 by michaeloconnell
Replied by michaeloconnell on topic Re: Mars too bright
Yea, looks like it is out of focus and too bright.

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12 years 8 months ago #93634 by tony h
Replied by tony h on topic Re: Mars too bright
I have a MS life cam cinema and find the setting /adjustments very sensitive
and can be hard to control even when you think the setting are OK when you start
capturing they have a tendency to jump back a step, very frustrating.

You don’t say what capture software you used but I guess it was SharpCap so try
something different like Wx Astro or Firecapture.

I can’t remember which one works best but I know you can get better control
of the camera in one them so just have a play and see how you get on.
I would try Wx Astro first
And keep the histogram down to about 200/220 and definitely not at max 255 as said
above or you will over expose.

Tony

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12 years 8 months ago #93636 by Seder
Replied by Seder on topic Re: Mars too bright
I was trying to fix RGB channels but the problem is that there is no such control is SharpCap :( I'll try your one

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12 years 8 months ago #93637 by mjc
Replied by mjc on topic Re: Mars too bright
From what I see its simply over exposed.

There maybe focus issues but the dominant problem is over exposure - and this isn't a per channel issue - Mars happens to be red so the effect will be more obvious in the red channel.

I took your jpg and separated it into the three channels and only the red channel was obviously "blurred". I suspect that that is an over exposure issue rather than a focus issue. Green was sweet and blue was mottled (can't really explain that).

Try IRIS or some other software that users have confidence in.

I must emphasise that my analysis assumes that the the processing of original images into the jpg posted didn't affect pixel values significantly.

Mark C.

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