VLA calibrator information for 1824+1044

This page summarizes the information for 1824+1044 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
 ===================================================================
 1824+107   J2000  A 18h24m02.855259s  10d44'23.774010"  Aug01         
 1821+107   B1950  A 18h21m41.659100s  10d42'43.899000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P S X       1.00            6
   6cm    C  P P P P       1.30
 3.7cm    X  P P P P       0.75
   2cm    U  S S S S       0.50
 0.7cm    Q  W W W W       0.22

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

WARNING: multiple positions found, using first one 276.0118969 +10.7399372 276.0118971 +10.7399372 Results from CASA pipeline flux density mining:
Observing date (UT)Flux density (Jy/bm)Source name used
L-band data ("VLA Y-arm" symbols)
201812180.634J1824+1044
201903080.615J1824+1044
201903090.613J1824+1044
201903160.630J1824+1044
201908070.621J1824+1044
201908090.589J1824+1044
201908240.608J1824+1044
201909160.728J1824+1044
201909170.710J1824+1044
201909170.668J1824+1044
S-band data (filled triangles)
201809080.723J1824+1044
201812180.659J1824+1044
201903080.652J1824+1044
201903090.657J1824+1044
201903160.688J1824+1044
202007210.680J1824+1044
202109280.741J1824+1044
202110060.709J1824+1044
C-band data (open squares)
201707070.764J1824+1044
201712240.726J1824+1044
201805150.694J1824+1044
201809080.719J1824+1044
201810072.256J1824+1044
201810080.849J1824+1044
201811090.702J1824+1044
201811180.699J1824+1044
201811300.686J1824+1044
201812210.676J1824+1044
201812270.666J1824+1044
201901010.703J1824+1044
201901110.682J1824+1044
201902020.686J1824+1044
201902230.695J1824+1044
201903020.669J1824+1044
201903030.668J1824+1044
201903040.667J1824+1044
201904300.690J1824+1044
201905050.688J1824+1044
201905150.686J1824+1044
201905240.695J1824+1044
201906020.694J1824+1044
201906110.704J1824+1044
X-band data (X-crosses)
201802190.668J1824+1044
201809080.586J1824+1044
201810080.598J1824+1044
202105150.547J1824+1044
202106090.563J1824+1044
202205240.503J1824+1044
202206080.506J1824+1044
202206240.510J1824+1044
202207160.503J1824+1044
U-band data (filled squares)
202103060.453J1824+1044
201909110.7211824+107