A second feature of the MIR data structure is that all character header data (eg.
y variable name for y-coord.
You can use uti_tsys_fix (antenna-based) or uti_tsys_cor (baseline-based) to correct those bad tsys points according to the correlation between the el and tsys: T sys F ( T rx T sky )exp sin el cons.3.6 Data Flagging flag Procedure to flag out the bad points.Mir Famose vous propose le plus large choix de la station pour vous équiper de la tête aux pieds : location et vente de matériel de ski ou de surf, ventes d'articles de textiles et d'accessoires.5.4.1 Passband calibration To do passband calibration with reference antenna 4 (antenna-based calibration by default IDL pass_cal_pol, refant4, smoothing2, preavg2, ntrim1 The syntax is similar to pass_cal.Figure 8: Cross-rx passband after fixing the delay and chunk offsets.4.3 Gain calibration To do gain calibration with reference antenna 4 (antenna-based calibration by default IDL gain_cal_pol, refant4, x'hours smoothing0.3 The syntax is similar to gain_cal.Tssb IDL select, baseline'1-3 reset IDL t2sppsf.Remember, dont use apply_tsys more than once.5 Calibrating Data The instructions below show how to calibrate a sma track using MIR.Both procedures use MIR function fits_out.Selfcal) and some limited general purpose tasks (e.g.The SMA adaptation of the MIR package was originated by Eric Keto, who also initiated the online data recording software dataCatcher to write the online data into MIR format, so MIR can be used to read and reduce the SMA data.The miriad format file output by idl2miriad should be used mainly for imaging purpose (e.g.IDL plot_spectra, x'velocity' In multiple epoch observations, compare the UV track to make sure the overlapping baselines are correct, and also make sure the line are centered at the same channels.In this section, you will need to inspect data in graphics.Type idl to get in idl environment.To use the program, you need to select the source data which tirage au sort ligues des champions 2018 the dopplerTrack command was issued on, otherwise the correction would be wrong.Sometimes tsys values are not bad for the whole baseline carte cadeau jeune homme but only a few data values, as shown in Figure.4 System Temperature Correction The SMA records Tsys for each baseline and spectral band as the geometric mean of Tsys from the two antennas of the baseline.Here is what I suggest: Use readdata to read only upper or lower sideband data into idl.This feature will use the filtered header info and save the subset of data (data filtered by dat_filter or select to a dataset file which can be restored by mir_restore like: IDL IDL mir_save savedatafile new which will only save the data of band.
With the above two ways, you will find that with about 1-2 GB memory, your computer should be able to reduce most of the sma data if not all, without the memory problem.
For the dual-band mode calibration, that is, using the low frequency band data for deriving (phase) gain solution to be used, after applying some certain scaling, for the high frequency band, please see the command example below, IDL or the following if perferring antenna-based solution.
Note that this number will have positive or negative value, negative value means the phase is decreasing with frequency when wrapping.