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Beginner Problem-Hopefully Simple Solution
08-17-2010, 11:43
Post: #1
Exclamation Beginner Problem-Hopefully Simple Solution
To Those that can Help:

So I am very, very new with this kind of software and I am trying to make stacks of photometric data using the default parameters. The resulting file is hundreds of times larger than I would expect (around 170 MB) and looks like a grey smear when displayed. Furthermore, it crashes my image-viewing tool (Ximtool). This was done stacking multiple .fit files and a couple of files I changed from .fit to .fits. The data was reduced by someone who knows what they are doing and I assume the header information is in order. Any suggestions or insights would be helpful.
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08-21-2010, 22:24 (This post was last modified: 08-21-2010 22:25 by Emmanuel Bertin.)
Post: #2
RE: Beginner Problem-Hopefully Simple Solution
Hi
please make sure that all the input images cover the desired area; by default SWarp will try to fit all the images in the output frame, even if one or two are "miles away" from the rest of the pack. As a test you may try to set the IMAGE_SIZE configuration parameter to some reasonable value and check that XImTool is now able to display it without crashing.
You might want to post your swarp.xml output so that I can investigate further.
- Emmanuel.
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08-22-2010, 07:27
Post: #3
RE: Beginner Problem-Hopefully Simple Solution
OK, thank you so much. I am going to try a few things my contact on this project suggested and post the results in a couple of days should I need any more help. Thanks again!

(08-21-2010 22:24)Emmanuel Bertin Wrote:  Hi
please make sure that all the input images cover the desired area; by default SWarp will try to fit all the images in the output frame, even if one or two are "miles away" from the rest of the pack. As a test you may try to set the IMAGE_SIZE configuration parameter to some reasonable value and check that XImTool is now able to display it without crashing.
You might want to post your swarp.xml output so that I can investigate further.
- Emmanuel.
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09-14-2010, 04:54
Post: #4
RE: Beginner Problem-Hopefully Simple Solution
Hey Emmanual,

Tried changing the output size as you suggested to no avail. I set it to 500x500, which is the size of all of the input images. Attached is the XML of my results as requested. I know it has been a month, but if you are still willing to help, I am more than grateful to receive it.

Thanks!


Attached File(s)
.gz  swarp.xml.tar.gz (Size: 2.5 KB / Downloads: 617)
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09-23-2010, 16:49
Post: #5
RE: Beginner Problem-Hopefully Simple Solution
Hi,
apologies for the delay; your answer came during a very busy period for me. I am still willing to help! The XML file does not reveal anything wrong with your data. Would you mind making a couple FITS files available to me (send me a private message) to find out?
Thanks!
- Emmanuel.
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