3 Using FLUXES

To run FLUXES or FLUXNOW, type its name (in lower case) after the prompt:

  % fluxes

The program first asks you what output you want to generate:

  JCMT FLUXES
  
  POS - Do you require planetary data? (Y/N) /YES/ > Y
  FLU - Do you require flux data?      (Y/N) /YES/ > Y

In the above example I opted to see both sets of output data. If you were only interested in the planetary positions, reply “N” to the second prompt. (Prompts asking for a Y/N answer can also be answered using true/false or t/f or y/n – case is not significant.)

Next, indicate where you want the information displayed or stored:

  SCREEN - Display output to terminal? (Y/N) /YES/ > Y
  OFL - Store output in a file?        (Y/N) /NO/ > Y
  OUTFILE - Name of output file /’fluxes.dat’/ >
  
  Data will be written to file: /home/user1/gjp/flux/fluxes.dat

If you reply “N” to the OFL prompt, the next lines shown won’t appear.

Next, you are asked to specify the time and date for which the information should be derived. If you set the value of NOW to Y, the current date and time are automatically obtained from your computer. Otherwise, you must specify the time and date yourself, as appears below:

  NOW - Use todays date/time? (Y/N) /YES/ > N
  
  DATE - UT DATE (DD MM YY) /’12 09 96’/ > 16 09 96
  TIME - UT TIME (HH MM SS) /’12 00 00’/ > 08 45 00

Since you might only require flux and positional information for one planet, you are given the option of selecting it by specifying a value for the parameter PLANET. When prompted, give the name of any planet, the Sun, the Moon, or ‘ALL’ (meaning all the planets plus the Sun and Moon). The information requested is then output to the screen and/or to the file (depending on the values you gave the parameters SCREEN and OFL). An example of the output generated is:

  Planetary Submillimetre Fluxes for the JCMT
  
  UT:  11:25:55       UT Date:18-Sep-1996     HST: 1:25:55
  
  LST: 00:54:39.1699  MJD (TT):    50344.477  Epoch: 1996.7145
  
  Body         RA        TRIMRA         Dec       TRIMDEC        GD     AMASS
             (h m s)  (arcsec/sec)    (d m s)  (arcsec/sec)     (au)
  SUN     11 44 40.1798  0.0379   + 1 39 33.4379  -0.0161    1.004691  13.375
  MERCURY 11 33 12.9974 -0.0334   - 0 15 11.5562   0.0277    0.652112  13.375
  VENUS    8 57 54.4433  0.0475   +16 20 19.3720  -0.0096    0.931404  13.375
  MARS     8 32  2.6334  0.0268   +19 56 37.9464  -0.0057    2.022026  13.375
  JUPITER 18 35 36.7652  0.0021   -23 23 39.5939   0.0001    4.866478  13.375
  SATURN   0 21  4.4782 -0.0030   - 0 33 58.9245  -0.0013    8.508262   1.078
  URANUS  20 12 46.1430 -0.0008   -20 33 30.0554  -0.0001   19.190398   5.546
  NEPTUNE 19 47 41.0331 -0.0004   -20 39 31.4554  -0.0001   29.655142  10.659
  PLUTO   16  4 56.6035  0.0008   - 7 52 56.8739  -0.0005   30.327774  13.375
  MOON    15 54 23.9864  0.7379   -16 17  3.6688  -0.0371    0.002580  13.375

  MARS
  South pole is Earth-facing; Inclination Angle =  73.30 degrees
  Semi-diameter =  2.31 arcsecs    Solid angle =  3.95E-10 sterads
  Filter    Centre   Filter   Total    Flux in    Brightness         HPBW
  Wavel.     Freq     Width    Flux     beam      Temperature       assumed
  micron     (GHz)    (GHz)    (Jy)      (Jy)         (K)          (arcsecs)
   2000      146.0    39.0     52.15     51.82    205.1 +-  0.0       33.8
   1300      221.0    60.0    119.63    117.86    207.1 +-  0.0       22.3
   1100      264.0    60.0    170.57    167.01    208.0 +-  0.0       18.7
    850      350.0    30.0    298.81    287.79    209.3 +-  0.0       14.0
    750      407.0    30.0    402.85    383.13    210.0 +-  0.0       12.1
    600      483.0    51.0    564.68    526.30    210.9 +-  0.0       10.2
    450      677.0    30.0   1093.62    954.69    212.5 +-  0.0        7.3
    350      866.0    30.0   1761.30   1414.23    213.7 +-  0.0        5.7
    200     1490.0    72.0   4915.53   3946.91    216.3 +-  0.0        5.7

and so on....

If you encounter problems, please ask your system manager to consult Appendix A.