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change pixel scale [message #80339]

Sat, 26 May 2012 04:46

spasoklampanas
Messages: 8
Registered: May 2012

Junior Member

Hi

I have some fits files (astronomy images) that have a different
pixel scale. How is it possible to bring them on the same pixel scale?
The given routine of degrade is not suitable, since it degrades the
image resolution by a factor of two, which is not my case.

Thanks a lot.

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Re: change pixel scale [message #86083 is a reply to message #80339]

Tue, 01 October 2013 15:54

rahmani.sahar
Messages: 1
Registered: October 2013

Junior Member

Just to sound even more stupid now I got this error message:

% HASTROM: ERROR - No overlap found between original and reference
images
% HASTROM: Be sure you have the right headers and the right equinoxes
% Compiled module: WRITEFITS.

The Galactic coordinates of the cloud are the same. On ds9 I put
the cursor at the centre of the cloud and on both cases the galactic
latitude and longitude are the same. What is my mistake though?
---------------------------------------------------------
I think you should check both headers in files. probably they are not in same regions. because hastrom aligns images so if there is no overlap between maps you cannot use it.

you can try frebin or congrid. they might help

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