[alma-config] Fw: Set of imaging and UV results for C arrays on SIL images

[John Conway]

Hi,

 I had a look at your page. Some points

1) Looking at the slices through the long -track synthesised beams there
are large negatives, I think this can only mean that you havn't used
true natural  weighting and is what we agreed to simulate in Tuscon, 
such natural weighting gives the maximum 
sensitivity and  uses UVWFT  = 'NA' and ROBUST=5; note that I think 
both UVWGT and  ROBUST need to be set to get true natural weighting. 


2) I think the beam greyscale upper level for the long tracks should be 
5% not 10%, I don't see much detail with the 10% plots.


3) When I go to one page and then try to navigate to others by 
going up a level in the 'Go To' box it doesn't give me access, I guess
you could simply add a page at a higher levek with a list of all the
simulations which one can click on.


4) I agree that plots for the images should be logarithmic. The
dirty image plots are OK but whats the timetable 
for producing the CLEAN images and the  error images (result - 
true image)? Are you going on vacation in August?

 
 Cheers
   John.


On Fri, 4 Aug 2000, Steven wrote:

> Sorry folks, I sent this to the group from a non-member account, so here I
> am trying again...
> 
> ----- Original Message -----
> From: Steven Heddle <heddle at totalise.co.uk>
> To: Min Yun <myun at aoc.nrao.edu>
> Cc: <alma-config at zia.aoc.NRAO.EDU>
> Sent: Friday, August 04, 2000 12:49 PM
> Subject: Set of imaging and UV results for C arrays on SIL images
> 
> 
> > Hello
> >
> > I have generated results for the C arrays applied to the 5 SIL images,
> with
> > the presentation modified to take account of the comments on the earlier
> > trial page.The naming convention has been modified slightly so that the
> > frequency encoded in the last two digits of the rootname of all the data
> > files is represented by b7 (i.e. ALMA band 7) for 345GHz - I have prefixed
> > the 7 with a b to still allow direct input of integer wavelengths in mm
> when
> > performing the simulations, and these would be represented as _1 for 1mm
> > etc. The UV distributions are now shown on plots with axes the same size,
> > although I have yet to find how to keep the bins in the histogram the same
> > for each case. I cannot see a practical means of setting the max grey
> scale
> > values to useful standard levels given the dependences on all parameters,
> so
> > I have let them autoscale. The grey scale results are no longer shown in
> > negative form.
> >
> > The results are presented on the web pages listed below (please use this
> > message as an index till I write an actual index page)
> > and are separated into pages showing UV results and pages showing imaging
> > results.
> >
> > For the imaging results, there is a page per SIL image per configuration
> > (i.e. A, C, or E) for snapshots and tracks separately. On each page the
> > results for the K(ogan) and C(onway) results are shown side by side, and
> > show contour plots of the the dirty map and grey scale plots of the dirty
> > map for each of the declinations simulated, i.e. +25, -23 and -70.
> > These pages are the first 10 in the list below- what you want from the
> name
> > is that it starts with IM, what image is being simulated (i.e. the name
> > contains MAR, MPD, CYG, M51 or SDC) and whether it contains SN or _4
> > denoting snapshot or 4 hour track respectively. Don't worry about the rest
> > of the name.
> >
> > For the UV results, there is a page per declination per configuration (i.e
> > A, C, or E) for snaphots and tracks separately. The results for the K and
> C
> > arrays are shown side by side, and show the UV distribution, histogram of
> > baselines, contour plot to 10% of dirty beam, grey scale plot to 10% level
> > of dirty beam (***NEW***), and four slices though the dirty beam at 0, 45,
> > 90 and 135 degrees.
> > These pages are the last 6 in the list below- what you want from the name
> is
> > that it starts with UV, what declination it contains (the +25, -23, or -70
> > part), and whether it is snapshot or track (SN or _4). Don't worry about
> the
> > rest of the name. Honestly, you'll grow to love these names through
> time...
> >
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCCYGSN/IMxCCYGSN.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCCYG_4/IMxCCYG_4.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCM51SN/IMxCM51SN.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCM51_4/IMxCM51_4.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCMARSN/IMxCMARSN.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCMAR_4/IMxCMAR_4.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCMPDSN/IMxCMPDSN.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCMPD_4/IMxCMPD_4.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCSDCSN/IMxCSDCSN.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/IMxCSDC_4/IMxCSDC_4.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/UVxCM51SN+25b7/UVxCM51SN+25b7.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/UVxCM51SN-23b7/UVxCM51SN-23b7.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/UVxCM51SN-70b7/UVxCM51SN-70b7.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/UVxCM51_4+25b7/UVxCM51_4+25b7.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/UVxCM51_4-23b7/UVxCM51_4-23b7.html
> > http://www.stevenheddle.co.uk/ALMA/SIL/UVxCM51_4-70b7/UVxCM51_4-70b7.html
> >
> > Having automated (to a large extent) the generation of the web pages as
> well
> > as the genartion of the results, I can basically have the same done for
> the
> > A and E arrays by Monday, if everybody is happy with this. My own thought
> is
> > that perhaps the grey scale images might benefit from a log rather than
> > linear scale. Regarding composite arrays such as BnC etc. , I could more
> > quickly simply generate the results for the B and D arrays if the layouts
> > were available. I'll wait till tomorrow for feedback before proceeding
> with
> > A and E in any case.
> >
> > I'll put up the information about the parameters, batch files etc. when I
> > recover the mental strength...
> >
> > Cheers,
> >     Steven
> >
> 
>