VLA calibrator information for 1800+7828

This page summarizes the information for 1800+7828 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
 ===================================================================
 1800+784   J2000  A 18h00m45.683918s  78d28'04.018510"  Aug01         
 1803+784   B1950  A 18h03m39.193500s  78d27'54.298000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P S S S       1.75
   6cm    C  P P P P       2.10
 3.7cm    X  P P P P       2.85
   2cm    U  P P P P       3.00
 0.7cm    Q  S S S S       2.4

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

Results from CASA pipeline flux density mining:
Observing date (UT)Flux density (Jy/bm)Source name used
L-band data ("VLA Y-arm" symbols)
201708211.952J1800+7828
201908102.376J1800+7828
201908291.920J1800+7828
201909082.007J1800+7828
202106252.207J1800+7828
202206182.163J1800+7828
202206182.151J1800+7828
202206192.178J1800+7828
202206202.155J1800+7828
202307132.326J1800+7828
S-band data (filled triangles)
201708212.066J1800+7828
201709152.082J1800+7828
201709152.082J1800+7828
201709182.008J1800+7828
201709191.989J1800+7828
201709211.953J1800+7828
201709221.951J1800+7828
201709221.959J1800+7828
201709271.949J1800+7828
201709271.954J1800+7828
201710032.058J1800+7828
201710052.031J1800+7828
201710072.105J1800+7828
201710072.113J1800+7828
201710082.104J1800+7828
201710112.047J1800+7828
201710141.934J1800+7828
201710151.945J1800+7828
201710181.994J1800+7828
201710181.994J1800+7828
201710202.072J1800+7828
201710232.047J1800+7828
201710252.056J1800+7828
201710272.076J1800+7828
201711012.130J1800+7828
201711012.133J1800+7828
201711052.308J1800+7828
201711062.316J1800+7828
201711062.318J1800+7828
201711072.297J1800+7828
201711082.223J1800+7828
201711102.179J1800+7828
201711112.070J1800+7828
201711112.078J1800+7828
201711132.074J1800+7828
201711172.186J1800+7828
201711222.264J1800+7828
201711222.280J1800+7828
201711222.283J1800+7828
201711262.154J1800+7828
201711262.156J1800+7828
201711272.153J1800+7828
201711272.156J1800+7828
201711282.149J1800+7828
201711282.152J1800+7828
201711302.182J1800+7828
201711302.185J1800+7828
201712032.203J1800+7828
201712032.205J1800+7828
201712042.243J1800+7828
201712042.246J1800+7828
201712092.198J1800+7828
201712132.178J1800+7828
201712152.210J1800+7828
201712152.211J1800+7828
201801042.321J1800+7828
201802022.280J1800+7828
201802032.256J1800+7828
201802042.238J1800+7828
201802072.193J1800+7828
201802102.180J1800+7828
201802112.209J1800+7828
201802132.223J1800+7828
201802192.402J1800+7828
201806052.361J1800+7828
201806052.350J1800+7828
201806052.338J1800+7828
201812142.368J1800+7828
201903052.315J1800+7828
201903124.710J1800+7828
201903232.421J1800+7828
201903242.433J1800+7828
201903292.316J1800+7828
201904042.241J1800+7828
201904052.257J1800+7828
201904072.356J1800+7828
201904142.317J1800+7828
201904202.409J1800+7828
201904212.395J1800+7828
201904262.347J1800+7828
201905032.192J1800+7828
201905102.167J1800+7828
201905142.243J1800+7828
201908272.137J1800+7828
201909082.223J1800+7828
201909112.184J1800+7828
201909162.193J1800+7828
201909212.246J1800+7828
201909222.293J1800+7828
201909302.086J1800+7828
202007102.601J1800+7828
202007162.335J1800+7828
202007172.348J1800+7828
202008012.377J1800+7828
202008022.378J1800+7828
202008042.398J1800+7828
202008062.388J1800+7828
202008112.347J1800+7828
202008172.295J1800+7828
202008182.277J1800+7828
202008212.285J1800+7828
202008222.286J1800+7828
202008232.322J1800+7828
202008252.315J1800+7828
202008262.300J1800+7828
202008312.221J1800+7828
202009032.318J1800+7828
202009042.355J1800+7828
202009052.428J1800+7828
202009062.439J1800+7828
202009072.465J1800+7828
202009102.420J1800+7828
202009122.359J1800+7828
202009192.359J1800+7828
202009192.367J1800+7828
202009212.405J1800+7828
202009262.422J1800+7828
202009272.446J1800+7828
202010162.419J1800+7828
202010202.395J1800+7828
202010212.365J1800+7828
202010222.468J1800+7828
202010232.387J1800+7828
202010252.418J1800+7828
202010262.461J1800+7828
202010272.730J1800+7828
202010282.558J1800+7828
202010292.563J1800+7828
202011012.543J1800+7828
202011022.581J1800+7828
202011042.538J1800+7828
202011052.615J1800+7828
202206232.489J1800+7828
202206232.456J1800+7828
202206242.461J1800+7828
202206262.522J1800+7828
202206262.446J1800+7828
202206262.470J1800+7828
202206272.475J1800+7828
202206282.421J1800+7828
202206292.422J1800+7828
202207032.288J1800+7828
C-band data (open squares)
201708212.210J1800+7828
201812142.625J1800+7828
201812152.568J1800+7828
201908102.463J1800+7828
201908272.368J1800+7828
201909112.231J1800+7828
201909162.207J1800+7828
201909212.308J1800+7828
201909222.341J1800+7828
X-band data (X-crosses)
201802102.591J1800+7828
201812142.608J1800+7828
201812152.555J1800+7828
201903212.722J1800+7828
201908092.227J1800+7828
202207302.723J1800+7828
U-band data (filled squares)
201812142.411J1800+7828
201812152.343J1800+7828
K-band data (open circles)
201812142.145J1800+7828
201812152.091J1800+7828
A-band data (6-pointed stars)
201812141.820J1800+7828