This output should be saved on your local computer (.sch) and then uploaded to the Parkes observing computers when you arrive.
The Parkes project number assigned to your proposal.Observer
Initials or short name of the observer(s).Receiver and Central Frequencies
The reciever and centre frequency(s) of your observations. If Doppler tracking is enabled, the frequency
here will be interpreted as the rest frequency of the observed line. If Doppler tracking
is disabled the frequency here would be the actual observing frequency (sky frequency).
Make sure your frequency(s) is within these limits (in MHz):
Select a correlator configuration from the menu. Only a few are listed and if yours is not listed, select NULL and enter it once you arrive at the observatory. A full list of supported modes is available from the Parkes Correlator Guide. DFB3/DFB4 configurations with "tb" indicate time-binning modes. For these, the number of time bins (set on the TCS GUI) must be at least 4 and at most 32. As an example, if you want 1 second sampling with sdfb3_tb16_16_8192, you would set the number of time-bins to 16. Other DFB3/DFB4 configurations are "spectrometer" modes and require a cycle-time more than 4s and the number of time-bins set to 1.Correlator cycle time
Select the number of seconds per correlator cycle. If using the Multibeam Correlator, the default is 5 seconds per integration. If using DFB3 or DFB4, the cycle time depends on the configuration (especially if you are using a time binning mode), but is usually set to 4 or more.Frequency switching
Enable frequency switching, with the switched IF separated from the main IF by some number in MHz (+ and - signs acceptable). Beware not to have an offset switch out of band.Parallactification mode (Multibeam receivers only)
Enable receiver rotation with Multibeam receivers. For single-beam receivers,
set this to disable. The modes are:
Rotate the receiver by a given angle, in degrees. This is only available with Multibeam receivers. For single-beam receivers this should be set to "0".Doppler Tracking
Enable/disable Doppler tracking. Note that this only adjusts the centre frequency, it does NOT continuously track the Doppler shift during an observation.Radial Velocity
The radial velocity of your source. Also choose the reference frame, LSR-KINEMATIC, LSR-DYNAMIC, Barycentric or Topocentric. The radial velocity information provided here will be ignored if Doppler tracking is disabled. Note: If Doppler tracking is disabled and no radio velocity is specified (also recommended) then you must adjust your sky frequency to account for the velocity of both the source (LSR or barycentric) and the velocity of the observatory relative to the rest frame. An online tool is available Frequency Calculator to calculate this adjustment.Integration time per ON position
Integration time on your source in seconds for each individual track. The corresponding reference (OFF) track will be observed with the same integration time. Don't make this value too large (say larger than a couple of minutes) as the sky conditions may change while you are on source.Spectral averaging interval
Number of seconds to average spectra over before writing to disk. Default is no averaging (1s). However, for high data rates averaging is recommended.ON-OFF Pattern
Two different patterns to are provided: The symmetric pattern will perform observations as OFF-ON-ON-OFF while the non-symmetric pattern will alternate between the the ON and the OFF position like OFF-ON-OFF-ON... The symmetric pattern has the advantage of reducing driving times, whereas the OFF integration of the non-symmetric pattern can be chosen to be toward the same patch of sky as the ON position. For the latter you may provide the reference position relative to the ON (see below) by selecting an RA offset of the reference position equal to the negative of the integration time. Note it is possible to disable this by selecting the "disabled" option. The schedule only only contain ON positions.Duration of Schedule
Total duration of the observing pattern in minutes. This 'total time' does not include driving times. This number determines the number of ON-OFF pairs. For example, if you wish to observe ON-source for 240 seconds, to observe the ON/OFF positions once (regardless of the pattern chosen), you would enter 8 minutes. To obtain four ON/OFFs, enter 16 minutes and so on.Coordinate system
The coordinate system of your coordinates. You may choose between equatorial (J2000 or B1950) or Galactic coordinates.Source Parameters
You can specify the name of your source here. If left blank the source name defaults to "source". For TRACK mode, you can enter your source list, one per line. Format is Name, RA/GLONG, DEC/GLAT and VELOCITY1 and VELOCITY2 (for two-IF modes). For coordinates, ensure you select the appropriate Coordinate system above. If using doppler tracking (i.e., your velocities are non-zero), ensure you set the correct frame above.
Example: AG356.48+0.19 17:36:13.8088 -31:49:06.713 -50Offset of the ON relative to source
The location of the ON position relative to the source coordinates. Generally not used. For example, RA: 00:02:00 DEC: -00:10:00 will shift the target position 2 time minutes to the east and 10 arcseconds to the south.Reference (OFF) position
The position of the reference (OFF) integration. You may choose between relative and absolute positioning. The relative position refers to the position you provided for the the source coordinates. Alternatively, you may provide an absolute position for the OFF integration. Depending on the coordinate system you choose, the coordinates must be given in sexagesimal or decimal format.Reference (OFF) Position Type
Scanning modes: You may choose only absolute positioning for the reference position.Reference (OFF) Position Value
The position of the reference integration (2 values separated by a comma). Please take care of the format: Equatorial, RA: hh:mm:ss DEC: dd:mm:ss, Galactic GLON: ddd.xxxxx GLAT: dd.xxxxx.Map Width
Scanning modes: The size of the map in arcmin. Only square maps are supported at this stage. The maps always have an odd number of rows so that one row passes through the map centre. Consequently the final map width may vary from what you specified here.Scanning direction
Scanning modes: Scanning direction of the map. You may choose to perform your map along RA/GLONG (i.e. horizontal direction) or along DEC/GLAT (vertical direction). Scanning at arbitrary angles is currently not supported.Starting point
Scanning modes: Starting point of the map. Values may be the north-eastern, north-western, south-eastern, or south-western corner.Nyquist Frequency:
Scanning modes: This frequency value (in MHz) is used to calculate the Nyquist sampling rate for the scanning. Default is the value given in Observing Frequency.Time spent on OFF scans:
Time spent on OFF scans in seconds. Default is calculated from the time spent on each row. Please seek advice from support staff if you require no reference scans.Spacing between rows:
Scanning modes: Spacing in arcsec betwen rows (orthogonal to the scanning direction). Default is calculated from the Nyquist frequency using an extra 0.9 oversampling factor and a 2" guard band to mitigate against tracking errors.Beam Size
Scanning modes: Beam size in arcsec (FWHM). Default is calculated from the Nyquist/Observing frequency with a Nyquist sampling rate (lambda/2D, where D=55m or D=64m). This value is then used to determine the scan rate.CALMODE
If calmode=SYNC, TCS will enable the Cal Control Unit (CCU) so that a cal signal is turned ON. If calmode=OFF, TCS will disable the cal signal via the CCU.Enable Tsys Logging?
If "Yes" is selected, the Tsys is calculated using the Parkes Conversion System and recorded into the RPFITS headers. For Multibeam correlator use, select "No" as this correlator drives its own Tsys online calibration.Standing wave mitigation?
With this option, only currently offered with the 13MM reciever, assists in the mitigation of the 5MHz standing wave between the underside of the focus cabin and the dish surface. The receiver translator is moved +/- lambda (cm) within the given (integer) integration time.New file for every source?
When TCS encounters a closef, it will close the current file. This is useful for multiple sources which can be matchd via filename with data processing applications such as ASAP and LIVEDATA.
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