[daip] HGEOM & coordinate increment

Eric Greisen egreisen at nrao.edu
Wed Sep 22 12:29:54 EDT 2004


Volker Heesen writes:
 > Hi there,
 > 
 > I have nice task to do: Do align a optical H_alpha with a set of radio 
 > continuum images. So I thought of HGEOM or OHGEO. In fact the alignment is 
 > perfect, but...
 > ... the coordinate increment is affected as well. That means, that the optical 
 > image is blown up that much, that it doesn't fit into the image any more.
 > 
 > Any recipies at hand?
 > 

Both of these tasks allow you to set a new output image size.  Any
number will do - not just powers of 2 - and 6000x6000 would hold the
full optical image.

Do you learn much by comparing images of such different resolution?
Something for sure - but you could also be mislead I suspect.

Eric Greisen




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