VLA calibrator information for 1744-3116

This page summarizes the information for 1744-3116 as found in the original VLA calibrator list and, if found there, a link to search the NRAO VLA Archive Survey (NVAS) for calibrator data before 2010. Furthermore, a table with the most recent approximate flux densities, starting from 2017 as mined from the VLA CASA pipeline is presented.

If shown at the top, we have recovered the original, pre-WIDAR ANTSOL flux density solutions from the period roughly 2000-2007; symbols as explained next.
The mined data are plotted (gray, on the left hand side) as function of (log) frequency on the top and as function of time on the bottom. The frequency band symbols in the bottom panel follow the symbols as outlined in the top panel:

4-band  (~75 MHz) horizontal stripe       X-band (~10.0 GHz) cross
P-band (~350 MHz) open triangle        U/Ku-band (~15.0 GHz) filled square
L-band (~1.5 GHz) VLA-Y shape             K-band (~22.2 GHz) open circle
S-band (~3.0 GHz) filled triangle      A/Ka-band (~33.2 GHz) 6-pointed star
C-band (~6.0 GHz) open square             Q-band (~45.0 GHz) filled circle
Assume a 10% flux density error on each point, up to 30% for the higher frequency data points. The dashed lines in the frequency plot indicate the approximate spectral index in the frequency band (tied to the measured flux density).
Depending on the spectral behavior, different receiver observing bands (as indicated with the log-frequency axis) may have very different typical flux densities. Note that there can be significant flux density changes for different array configurations, which start date is indicated at the top of the time-line figure. Calendar years are separated by vertical dotted lines.
If shown, a curve depicts a fit to the (unweighted) average data for each band (if there are more than two bands with measured flux densities). The fit equation is listed at the top where the x-coordinate represents the base-10 log of the frequency (GHz) and the y-coordinate represents the base-10 log of the flux density (mJy/bm). The fit may use more data than shown and is using data with different time stamps, which means typically different flux densitities in a single band for genuine variable sources (and/or observed in different array configurations).
Depending on the variability of the source, array configuration and the quality of the data, this fit may, or may not, be representative for the data!

(Click on the figure for a larger view in a new tab/window)

 Original (outdated) VLA calibrator list information: 
 IAU NAME EQUINOX  PC RA(hh,mm,ss)    DEC(ddd,mm,ss)   POS.REF ALT.NAME
 ===================================================================
 1744-312   J2000  C 17h44m23.5826s   -31d16'35.986"     May00
 1741-312   B1950  C 17h41m09.3397s   -31d15'20.712"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  X X X X       0.20
   6cm    C  S S S X       0.42           10
 3.7cm    X  S S S S       0.58            5
   2cm    U  S S S S       0.59
 0.7cm    Q  S S S S       0.67

Default NVAS search around this position (in new tab/window)

WARNING: multiple positions found, using first one 266.0982083 -31.2767222 266.0982425 -31.2767484 266.0982608 -31.2766628 266.0982621 -31.2766594 266.0982625 -31.2766628 Results from CASA pipeline flux density mining:
Observing date (UT)Flux density (Jy/bm)Source name used
C-band data (open squares)
202203200.432j1744
202203230.432j1744
X-band data (X-crosses)
202203200.441j1744
202203230.443j1744
U-band data (filled squares)
202203200.423j1744
202203230.420j1744
A-band data (6-pointed stars)
202304160.559QSOJ1744-3116
Q-band data (filled circles)
202304160.477QSOJ1744-3116
201904040.475J1744-3116
201712230.554J1744-3116
201803080.538J1744-3116
201803080.540J1744-3116
201803080.553J1744-3116
201803260.532J1744-3116
201803260.534J1744-3116
201803280.534J1744-3116
201804080.532J1744-3116
201804090.533J1744-3116
201804130.546J1744-3116
201804170.521J1744-3116
201804300.519J1744-3116
201805220.511J1744-3116
201902250.464J1744-3116
201906040.449J1744-3116
201908080.461J1744-3116
201909080.453J1744-3116
202012120.403J1744-3116
202106230.441J1744-3116
202204270.418J1744-3116
202206280.421J1744-3116
202207030.483J1744-3116
201705240.641J1744-3116
201706170.640J1744-3116
201904250.503J1744-3116
201905010.478J1744-3116
201905080.476J1744-3116
201905110.478J1744-3116
201905110.519J1744-3116
201905190.467J1744-3116
201908080.478J1744-3116
201908160.495J1744-3116
202012040.434J1744-3116
202107250.508J1744-3116
202107310.489J1744-3116
202108160.508J1744-3116
202204070.456J1744-3116
202204120.438J1744-3116
202206040.445J1744-3116
202206080.455J1744-3116
202206150.479J1744-3116
202206190.548J1744-3116
202206200.481J1744-3116
202207290.506J1744-3116
202207290.586J1744-3116
201809070.735J1744-3116
201809120.615J1744-3116
201809150.592J1744-3116
201809170.594J1744-3116
201809230.589J1744-3116
201809240.598J1744-3116
201809280.579J1744-3116
201902250.470J1744-3116
201906040.456J1744-3116
202102040.473J1744-3116
202102070.465J1744-3116
202102080.485J1744-3116
202102080.473J1744-3116
201707260.562J1744-3116
201803280.115J1744-3116
201811080.548J1744-3116
201811120.591J1744-3116
201902250.523J1744-3116
201906040.439J1744-3116
202101290.445J1744-3116
202101310.488J1744-3116
202105220.484J1744-3116
202106120.524J1744-3116
202201020.484J1744-3116
202201020.449J1744-3116
201803250.127J1744-3116
201804230.607J1744-3116
201907260.474J1744-3116
202104160.466J1744-3116
201803020.142J1744-3116
201803030.144J1744-3116
201803060.149J1744-3116
201803060.135J1744-3116
201803070.145J1744-3116
201803100.137J1744-3116
201907180.342J1744-3116
201907210.348J1744-3116
201910150.517J1744-3116
201902280.5101744-312
201908030.4801744-312X
201903240.499J1744-3116