[daip] Asking for help with XGAUS on a transposed moment map {External}

[Eric Greisen]

XGAUS is to be used in imagr cubes - with many planes on the
frequency/velocity axis.  A moment map has already been extracted from a
cube and has only 1 plane.  Moment 0 is the total HI, moment 1 is the
predominant velocity, and moment 2 is the velocity width.  Each are sinle
plane images.  You need to get ahold of the original image cube to use
XGAUS.  There is an AIPS memo detailing its use (and other similar tasks).

Eric Greisen

> Dear AIPS Group,
>
> I would like to ask for your help regarding the XGAUS task. I am trying to
> fit Gaussians to the spectra of a moment 2 map (it is a VLA HI observation
> from 2008) and save the fits to individual files.
>
> I am still a beginner at using AIPS, especially the tasks for Gaussian
> fits. The plots on the TV have the right ascension as the first axis, and
> I wanted to change that by using TRANS and setting the velocity as the
> first axis. However, when I try plotting with the transposed file as the
> input, I get an error message that a minimum of 6 pixels are required to
> do a fit. I have inspected the transposed cube with tvmovie and there was
> nothing on the images, all of them were blank.
>
> May I have overlooked something while doing the transposing?
>
> Thank you so much for your time in advance.
>
> Sincerely,
> Eniko Pichler
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-- 
Eric W Greisen