Crop N pixels from extracted echelle spectra
Ivan Ramirez wrote on Jul 21, 2008
Hello,
I have an extrated echelle spectrum of ~60 orders, 2048 pixels each. The last ~100 pixels of all orders are useless and I'd like to remove them; i.e. I'd like to create, from the original spectrum, another echelle spectrum of ~60 orders but ~1948 pixels each. Any ideas?
Thanks,
-Ivan
I have an extrated echelle spectrum of ~60 orders, 2048 pixels each. The last ~100 pixels of all orders are useless and I'd like to remove them; i.e. I'd like to create, from the original spectrum, another echelle spectrum of ~60 orders but ~1948 pixels each. Any ideas?
Thanks,
-Ivan
Francisco Valdes wrote on Jul 21, 2008
I assume the extract echelle orders are in "multispec" format (typically the file name has a .ms or .ec). This format is easy to trim with an image section
If the format has the 3rd dimension you would add an extra ,* in the section. Naturally you might be concerned that this would invalidate something about the format. In this case it is perfectly fine.
I hope this addresses what you want to do.
Yours,
Frank Valdes
imcopy foo.ec[1:1948,*] newfoo.ec
If the format has the 3rd dimension you would add an extra ,* in the section. Naturally you might be concerned that this would invalidate something about the format. In this case it is perfectly fine.
I hope this addresses what you want to do.
Yours,
Frank Valdes
Ivan Ramirez wrote on Jul 21, 2008
That worked. Thanks Frank!
Last post on Jul 21, 2008