3D mosaic nifs
monikval wrote on Oct 01, 2009
Hi,
I have 3D cubes created with IRAF-NIFS tasks, but in all of them the object is in different positions. Is there any task in iraf that I can use to shift them in subpixel scale before combining them? (All the tasks that use WSC to derive the shifts give dx=0,dy=0).
Thanks for your help,
Monik.
I have 3D cubes created with IRAF-NIFS tasks, but in all of them the object is in different positions. Is there any task in iraf that I can use to shift them in subpixel scale before combining them? (All the tasks that use WSC to derive the shifts give dx=0,dy=0).
Thanks for your help,
Monik.
James Turner wrote on Oct 01, 2009
Nifcube itself should be able to do this, but you may need to play around with WCS values to tell it the relative offsets.
I have a task for mosaicing datacubes with sub-pixel shifts, but that's not what you want here; since the NIFS data are undersampled, it would be best to let nifcube handle this in one shot using Drizzle.
James.
I have a task for mosaicing datacubes with sub-pixel shifts, but that's not what you want here; since the NIFS data are undersampled, it would be best to let nifcube handle this in one shot using Drizzle.
James.
monikval wrote on Oct 01, 2009
Hi James,
Mmm, yes you're right: seems that, in principle, IRAF-NIFCUBE should be able to do that, but we have to wait for new developments + releases of IRAF-NIFs to get this working.
Thanks for your answer,
Monik.
Mmm, yes you're right: seems that, in principle, IRAF-NIFCUBE should be able to do that, but we have to wait for new developments + releases of IRAF-NIFs to get this working.
Thanks for your answer,
Monik.
Last post on Oct 01, 2009