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Re: Combining rgb fits files [message #53306 is a reply to message #53305]

Thu, 05 April 2007 06:41

Paolo Grigis
Messages: 171
Registered: December 2003

Senior Member

Well, whatever it is you are doing, you should check first
if it works with a single color image.

If the image looks blank, either it is, or you are not scaling
it correctly when viewing it. A bit of experiment with scaling
should clear the issue. If max(image) is equal min(image), then
it is really blank, so you'll have to get better data first...

Also it seems to me that you are confusing FITS with tiffs...

Ciao,
Paolo

Amanda wrote:
> I have 3 seperate fits files in red, green and blue and I think I need
> to combine them before I can do anything with them. When I look at
> them individually, they seem blank. I tried using the rgb to tiff
> procedure in idl but its still mostly blank with a small bit of it
> white. I got the data from the Faulkes telescope and the star I want
> shows up in the jpeg image. I'm trying to get light curves of variable
> stars from fits files. I don't know what I can do with a tiff file
> even if it did show up properly. I'm still not very good at this stuff
> so any help would be appreciated.
> Thanks.
>

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[Message index]

		Re: Combining rgb fits files By: Christopher Thom on Fri, 06 April 2007 09:46
		Re: Combining rgb fits files By: David Fanning on Thu, 05 April 2007 08:32
		Re: Combining rgb fits files By: Paolo Grigis on Thu, 05 April 2007 06:41
		Re: Combining rgb fits files By: David Fanning on Thu, 05 April 2007 07:30

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