Planning the usage of Solar System bodies as calibrators in ALMA Cycle 0

There are two things to consider when choosing a Solar System body as a calibrator:
  1. its location on the sky with respect to the science target(s)
  2. its visibility amplitude for the desired antenna configuration.

To assess item 1, you can use buildMinorPlanetPlot in casa to generate a Gildas script that will plot the elevation vs. LST for Solar System objects and your science target. To assess item 2, you can use my script called au.planetPlots() which calls the predictcomp task available in casa >= 3.4.

Plots for end of Cycle 0

Here are the results for the final 3 months of Cycle 0 observing for Venus, Mars, Ceres, Vesta, Pallas, Juno, Ganymede, Callisto, Titan, Uranus, Neptune:

Plots for Cycle 1

Here are results for the 10 official Solar System calibrators for Cycle 1: Venus, Mars, Ceres, Pallas, Jupiter, Ganymede, Callisto, Titan, Uranus, Neptune. Note that Jupiter is so large that it can only ever be used in Band 3 ACA observations:

Simulated visibility amplitudes of selected planets and minor planets in ALMA Cycle 0

The simulations in the table below are a mixture of plots created by simdata/plotms (which was the only method in the beginning) and predictcomp (which only became available in November 2011). The simdata plots are for a duration of 15 minutes centered on transit (unless otherwise noted), while the predictcomp plots are only 1 second duration at a location somewhere close to transit, but not exactly there.
mydict = predictcomp(objname='Callisto', epoch='2011-12-01/01:40:00', minfreq='345e9', symb='o', antennalist='alma.cycle0.extended.cfg')
Note: if you get an error: "SEVERE predictcomp coercing to Unicode: need string or buffer, dict found", then exit casa, rm ~/.matplotlib/fontList.cache, and restart casa.

If all you want to know is the object's RA and Dec on a specific date, you can use the planet function of analysisUtils.

Body
Compact configuration
Body
Extended configuration
Body
Band 9
Band 7
Band 6
Band 3
Band 9
Band 7
Band 6
Band 3
Callisto Callisto Callisto
Ceres Ceres Ceres
Juno Juno Juno
Mars Mars Mars
Neptune at transit, and at hour angle = -4 hours
Neptune Neptune
Pallas Pallas Pallas
Titan Titan Titan
Uranus Uranus Uranus
Vesta Vesta Vesta

Elevation vs. LST and UT

15-Oct-2011
01-Nov-2011
15-Nov-2011

Test

Body alma.cycle0.extended.cfg
  100GHz 230GHz 345GHz 690GHz
Callisto

-- ToddHunter - 2011-09-19
Topic attachments
I Attachment Action Size Date Who Comment
2012-10-20.pdfpdf 2012-10-20.pdf manage 6 MB 2012-10-18 - 14:44 ToddHunter  
2012-11-20.pdfpdf 2012-11-20.pdf manage 6 MB 2012-10-18 - 14:44 ToddHunter  
2012-12-20.pdfpdf 2012-12-20.pdf manage 6 MB 2012-10-18 - 14:42 ToddHunter  
2013-04-01.pdfpdf 2013-04-01.pdf manage 14 MB 2013-02-05 - 17:14 ToddHunter April 1, 2013 Cycle 1 configs
2014-04-01.pdfpdf 2014-04-01.pdf manage 14 MB 2013-02-06 - 17:16 ToddHunter April 1, 2014 Cycle 1 configs
Asteroids.xlsxls Asteroids.xls manage 67 K 2011-09-22 - 17:29 ToddHunter  
buildwiki.py.txttxt buildwiki.py.txt manage 1 K 2012-07-27 - 11:11 ToddHunter casa script to build all these plots for Cycle 1 observing
callisto690.extended.pngpng callisto690.extended.png manage 45 K 2012-03-15 - 15:40 ToddHunter  
callisto690.pngpng callisto690.png manage 14 K 2011-09-30 - 09:35 ToddHunter  
callisto_230ghz_extended.pngpng callisto_230ghz_extended.png manage 32 K 2011-12-09 - 12:10 ToddHunter  
callisto_345GHz_compact_20111201.pngpng callisto_345GHz_compact_20111201.png manage 31 K 2011-11-21 - 23:17 ToddHunter  
callisto_345GHz_extended_20120401.pngpng callisto_345GHz_extended_20120401.png manage 31 K 2011-11-21 - 23:26 ToddHunter  
ceres.pngpng ceres.png manage 13 K 2011-09-19 - 10:57 ToddHunter  
ceres345ext.pngpng ceres345ext.png manage 14 K 2011-10-11 - 15:05 ToddHunter  
ceres690.extended.pngpng ceres690.extended.png manage 46 K 2012-03-15 - 14:54 ToddHunter  
ceres690ext.pngpng ceres690ext.png manage 14 K 2011-09-22 - 17:09 ToddHunter  
ceres90compact.pngpng ceres90compact.png manage 15 K 2011-09-26 - 12:19 ToddHunter  
ceres_345GHz_extended_20120401.pngpng ceres_345GHz_extended_20120401.png manage 33 K 2011-11-21 - 23:25 ToddHunter  
juno_690ghz_extended.pngpng juno_690ghz_extended.png manage 35 K 2011-12-09 - 12:00 ToddHunter  
juno_90ghz_extended.pngpng juno_90ghz_extended.png manage 43 K 2011-12-09 - 11:54 ToddHunter  
mars690uv.pngpng mars690uv.png manage 15 K 2012-01-19 - 16:59 ToddHunter  
mars90.extended.pngpng mars90.extended.png manage 42 K 2012-03-15 - 17:41 ToddHunter  
mars_100GHz_compact_20111201.pngpng mars_100GHz_compact_20111201.png manage 32 K 2011-11-21 - 20:11 ToddHunter  
mars_230ghz_compact.pngpng mars_230ghz_compact.png manage 35 K 2011-12-09 - 12:06 ToddHunter  
minorplanets.01-Nov-2011.pngpng minorplanets.01-Nov-2011.png manage 109 K 2011-10-10 - 12:18 ToddHunter  
minorplanets.15-Nov-2011.pngpng minorplanets.15-Nov-2011.png manage 112 K 2011-10-10 - 12:18 ToddHunter  
minorplanets.15-Oct-2011.pngpng minorplanets.15-Oct-2011.png manage 107 K 2011-10-10 - 12:10 ToddHunter  
neptune.pngpng neptune.png manage 15 K 2011-09-22 - 10:40 ToddHunter  
neptune230.extended.pngpng neptune230.extended.png manage 45 K 2012-03-15 - 14:40 ToddHunter  
neptune345.extended.pngpng neptune345.extended.png manage 43 K 2012-03-15 - 14:22 ToddHunter  
neptune690.extended.pngpng neptune690.extended.png manage 45 K 2012-03-15 - 14:17 ToddHunter  
neptune690compact.pngpng neptune690compact.png manage 15 K 2011-09-28 - 12:33 ToddHunter  
neptune690compact_ha-4.pngpng neptune690compact_ha-4.png manage 17 K 2011-09-28 - 12:32 ToddHunter  
neptune98compact.pngpng neptune98compact.png manage 15 K 2011-09-26 - 12:25 ToddHunter  
neptune_345GHz_compact_20111201.pngpng neptune_345GHz_compact_20111201.png manage 31 K 2011-11-21 - 20:14 ToddHunter  
neptune_90ghz_extended.pngpng neptune_90ghz_extended.png manage 34 K 2011-12-09 - 11:32 ToddHunter  
neptune_byantenna.pdfpdf neptune_byantenna.pdf manage 751 K 2011-09-22 - 10:53 ToddHunter  
pallas690compact.pngpng pallas690compact.png manage 14 K 2011-09-27 - 10:17 ToddHunter  
pallas691extended.pngpng pallas691extended.png manage 14 K 2012-03-12 - 16:27 ToddHunter  
titan345.pngpng titan345.png manage 13 K 2011-09-19 - 18:03 ToddHunter  
titan690compact.pngpng titan690compact.png manage 13 K 2011-09-27 - 10:02 ToddHunter  
titan690ext.pngpng titan690ext.png manage 15 K 2011-09-22 - 17:12 ToddHunter  
titan98compact.pngpng titan98compact.png manage 14 K 2011-09-27 - 10:10 ToddHunter  
titan_345GHz_extended_20120401.pngpng titan_345GHz_extended_20120401.png manage 32 K 2011-11-21 - 23:33 ToddHunter  
titan_691GHz_extended_20120401.pngpng titan_691GHz_extended_20120401.png manage 30 K 2011-11-21 - 23:33 ToddHunter  
titan_90ghz_extended.pngpng titan_90ghz_extended.png manage 37 K 2011-12-09 - 11:44 ToddHunter  
uranus230.extended.pngpng uranus230.extended.png manage 44 K 2012-03-15 - 14:43 ToddHunter  
uranus345.extended.pngpng uranus345.extended.png manage 44 K 2012-03-15 - 14:43 ToddHunter  
uranus690.extended.pngpng uranus690.extended.png manage 43 K 2012-03-15 - 14:17 ToddHunter  
uranus90.extended.pngpng uranus90.extended.png manage 46 K 2012-03-15 - 14:46 ToddHunter  
vesta.pngpng vesta.png manage 13 K 2011-09-19 - 10:58 ToddHunter  
vesta690ext.pngpng vesta690ext.png manage 14 K 2011-09-22 - 17:08 ToddHunter  
Topic revision: r27 - 2013-02-07, ToddHunter
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding NRAO Public Wiki? Send feedback