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Re: astro images overlay [message #808]

Sun, 16 May 1993 16:10

thompson
Messages: 584
Registered: August 1991

Senior Member

ajaunsen@medusa.uio.no (Andreas Ortmann Jaunsen) writes:

> Hello !

>
> I'd like to know if there are anyone out there with a routine in IDL for
> displaying 2 or more images on top of each other with different colors.

> For instance: 2 astronomical images of the same field taken in two different
> filters.

> Andreas

One way to do it would be to use the routine COLOR_QUAN to assign the red,
green, and blue colors to up to three seperate images. You would then have a
single eight bit image and a set of special color tables to use in displaying
it.

Bill Thompson

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