[daip] Image overrlays

[Jessica Rosenberg]

Hello,

I had a question about making a plot that contains a greyscale image 
overlaid with my radio contours. The issue is that the spatial 
resolution of my optical image (for greyscale plotting) is much higher 
than the spatial resolution of my moment map. As far as I can tell, to 
get GREYS or any of the other plotting programs to overlay the images 
properly they have to have the same spatial scale. Is this true? If so, 
is there any way to re-pixelate my moment map? I really don't want to 
smooth the optical image, but I can't seem to find any way within AIPS 
to re-pixelate the moment map. If that is the case, I am going to have 
to re-image the field (I actually tried to do this but RASHIFT and 
DECSHIFT did not shift the field center so I am at a bit of a loss for 
how I would even manage this with re-imaging without having to make the 
image size prohibitively large). Is there a way to easily change the 
pixels scale of the moment map or the imaged cube? Is there some easier 
way to make this plot?

Thanks,
Jessica

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Jessica Rosenberg
Harvard-Smithsonian Center for Astrophysics
60 Garden Street, MS 65
Cambridge, MA 02138-1516

Phone: 617-496-7740
E-mail: jlrosenberg at cfa.harvard.edu
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