Monitored source QSO B1420+326

Monitored source QSO B1420+326 - blazar

Position: 14:22:30.38 +32:23:10.4 · cameras: TTUQ1b1x1 TTUQ2b1x1 · 170 detections, 34 upper limits · 78 excluded from the lightcurve

Date range: 2025-12-23.51409 .. 2026-09-18.12101 (UTC) · JD 2461033.01409 .. 2461301.62101

Lightcurve - last 30 days

Lightcurve - full time range

Data files: lightcurve.dat (JD mag err camera field) · upperlimits.dat (JD limit_mag camera field) · lightcurve_aavso.txt (AAVSO Extended Format incl. fainter-than records)

Why these photometric measurements are not very precise

Photometric measurements obtained with a wide-field camera are not very precise, for a number of reasons:

Bad plate solution: errors in the astrometric calibration result in misplacement of the photometric aperture. This may create outlier measurements.
Undersampled PSF: star images occupy only a few pixels, so any uncorrected pixel-to-pixel and intra-pixel sensitivity variations affect the measurements more than they would for well-sampled telescopic images in which each star is spread across many pixels.
Low observing altitude: the fields are often imaged only 15-20 degrees above the horizon. This is a deliberate trade-off for an all-sky transient search, as the sky area at low elevation is far larger than the area near the zenith, but it is bad for photometric accuracy. An airmass-dependent magnitude zero-point correction is applied, but it is not perfect.
Color-dependent (second-order) extinction: a star's brightness measured relative to the comparison stars in the field is elevation-dependent if the star's color differs from the average color of the comparison stars.
Blending with nearby stars in crowded fields affects the measurements differently depending on the aperture size, which is adjusted for each image individually based on the seeing and focus quality.
Position-dependent PSF: the same star may fall closer to the image center in one field and farther from it in another, so a different fraction of its PSF is covered by the aperture even when the same aperture is used to measure both images. Field-to-field and camera-to-camera calibration is therefore an issue, and its magnitude differs from source to source.
Chromatic aberration: many wide-field lenses suffer from it, leaving extremely red stars out of focus while the focus is optimal for average-colored stars.
Clouds, if present, dramatically degrade the quality of the photometry across the entire image.

In practice, expect a photometric uncertainty of ~0.1 mag, or somewhat better in favorable conditions.

The intended use of these data is a quick check of the current state of a source (flaring or quiescent) - not precise photometry.

The photometric measurements are performed without a filter; the zero-point of the instrumental magnitude scale is set by the V magnitudes of the field stars. You are welcome to use these data in any way you see fit, providing a link to this page as the origin of the data.

Photometry table (newest measurements first)

Date (UTC) JD(UTC) mag err status camera image 2026-09-18.12101 2461301.62101337 15.3096 99.0000 upperlimit TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-09-17_21-54-05_20.00sec_0.00C_LIGHTs_0075.fits 2026-09-18.12030 2461301.62029839 15.3201 99.0000 upperlimit TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-09-17_21-53-03_20.00sec_0.00C_LIGHTs_0074.fits 2026-08-31.15003 2461283.65002837 14.7634 0.2797 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-30_22-35-52_20.00sec_-0.00C_LIGHTs_0091.fits 2026-08-31.14922 2461283.64922446 14.9257 0.3077 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-30_22-34-42_20.00sec_-0.00C_LIGHTs_0090.fits 2026-08-29.15472 2461281.65471851 14.1019 0.2144 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-28_22-42-37_20.00sec_0.00C_LIGHTs_0095.fits 2026-08-24.15234 2461276.65233628 14.4417 0.2137 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-23_22-39-11_20.00sec_-0.00C_LIGHTs_0097.fits 2026-08-24.15177 2461276.65177039 14.1377 0.1668 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-23_22-38-22_20.00sec_-0.00C_LIGHTs_0096.fits 2026-08-19.17282 2461271.67282338 14.6262 0.1574 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-18_23-08-41_20.00sec_0.00C_LIGHTs_0097.fits 2026-08-19.17227 2461271.67226630 14.6763 0.1610 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-18_23-07-53_20.00sec_-0.00C_LIGHTs_0096.fits 2026-08-18.17909 2461270.67909289 14.5440 0.1336 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-08-17_23-17-43_20.00sec_-0.00C_LIGHT_0141.fits 2026-08-18.17840 2461270.67839978 14.5367 0.1278 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-08-17_23-16-43_20.00sec_-0.00C_LIGHT_0140.fits 2026-08-18.16556 2461270.66555804 14.5720 0.1282 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-17_22-58-14_20.00sec_-0.00C_LIGHTs_0103.fits 2026-08-18.16492 2461270.66491618 14.4750 0.1194 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-17_22-57-18_20.00sec_-0.00C_LIGHTs_0102.fits 2026-08-17.18172 2461269.68171674 14.6894 0.1563 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-08-16_23-21-30_20.00sec_0.00C_LIGHT_0141.fits 2026-08-17.18113 2461269.68113376 14.2889 0.1067 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-08-16_23-20-39_20.00sec_-0.00C_LIGHT_0140.fits 2026-08-17.16825 2461269.66824722 14.5959 0.1338 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-16_23-02-06_20.00sec_-0.00C_LIGHTs_0107.fits 2026-08-17.16717 2461269.66717463 14.4340 0.1130 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-16_23-00-33_20.00sec_-0.00C_LIGHTs_0106.fits 2026-08-15.18610 2461267.68610309 14.6796 0.1579 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-14_23-27-49_20.00sec_-0.00C_LIGHTs_0095.fits 2026-08-15.18556 2461267.68556009 14.5375 0.1349 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-14_23-27-02_20.00sec_-0.00C_LIGHTs_0094.fits 2026-08-11.17614 2461263.67614144 14.6627 0.1380 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-10_23-13-28_20.00sec_0.00C_LIGHTs_0113.fits 2026-08-11.17561 2461263.67561079 14.6160 0.1344 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-10_23-12-42_20.00sec_-0.00C_LIGHTs_0112.fits 2026-08-10.17712 2461262.67711573 14.7368 0.1812 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-09_23-14-52_20.00sec_0.00C_LIGHTs_0111.fits 2026-08-10.17646 2461262.67646084 14.8107 0.1943 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-09_23-13-56_20.00sec_-0.00C_LIGHTs_0110.fits 2026-08-07.18605 2461259.68605488 14.6152 0.1685 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-06_23-27-45_20.00sec_0.00C_LIGHTs_0115.fits 2026-08-07.18544 2461259.68544463 15.1295 0.2798 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-06_23-26-52_20.00sec_-0.00C_LIGHTs_0114.fits 2026-08-05.19743 2461257.69742628 14.8443 0.1665 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-08-04_23-44-07_20.00sec_-0.00C_LIGHT_0151.fits 2026-08-05.19665 2461257.69664859 14.8810 0.1745 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-08-04_23-43-00_20.00sec_-0.00C_LIGHT_0150.fits 2026-08-05.18575 2461257.68575095 15.0613 0.1938 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-04_23-27-18_20.00sec_-0.00C_LIGHTs_0117.fits 2026-08-05.18522 2461257.68522010 14.8755 0.1642 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-04_23-26-33_20.00sec_-0.00C_LIGHTs_0116.fits 2026-08-04.18569 2461256.68568740 14.7532 0.1625 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-03_23-27-13_20.00sec_-0.00C_LIGHTs_0121.fits 2026-08-04.18499 2461256.68498973 14.6361 0.1478 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-03_23-26-13_20.00sec_-0.00C_LIGHTs_0120.fits 2026-08-03.20311 2461255.70310586 14.1880 0.1299 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-08-02_23-52-18_20.00sec_0.00C_LIGHT_0157.fits 2026-08-03.20257 2461255.70257462 14.5695 0.1944 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-08-02_23-51-32_20.00sec_-0.00C_LIGHT_0156.fits 2026-08-03.18846 2461255.68846035 14.1679 0.1088 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-02_23-31-12_20.00sec_-0.00C_LIGHTs_0121.fits 2026-08-03.18762 2461255.68761824 14.3482 0.1270 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-08-02_23-30-00_20.00sec_0.00C_LIGHTs_0120.fits 2026-07-30.18978 2461251.68977598 14.1311 0.2061 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-29_23-33-06_20.00sec_0.00C_LIGHTs_0123.fits 2026-07-30.18920 2461251.68920108 14.0704 0.1887 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-29_23-32-16_20.00sec_-0.00C_LIGHTs_0122.fits 2026-07-29.18414 2461250.68413587 14.0113 0.1848 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-28_23-24-59_20.00sec_-0.00C_LIGHTs_0121.fits 2026-07-29.18361 2461250.68360574 14.0424 0.1839 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-28_23-24-13_20.00sec_-0.00C_LIGHTs_0120.fits 2026-07-28.19746 2461249.69745720 14.0500 0.1491 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-27_23-44-10_20.00sec_-0.00C_LIGHT_0147.fits 2026-07-28.19695 2461249.69695284 14.1050 0.1563 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-27_23-43-26_20.00sec_-0.00C_LIGHT_0146.fits 2026-07-28.19019 2461249.69018925 13.9898 0.1237 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-27_23-33-42_20.00sec_-0.00C_LIGHTs_0117.fits 2026-07-28.18954 2461249.68953978 13.7741 0.1009 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-27_23-32-46_20.00sec_-0.00C_LIGHTs_0116.fits 2026-07-27.22195 2461248.72195090 14.1753 0.1598 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-27_00-19-26_20.00sec_-0.00C_LIGHTs_0045.fits 2026-07-27.22086 2461248.72085572 13.9186 0.1268 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-27_00-17-51_20.00sec_-0.00C_LIGHTs_0044.fits 2026-07-26.20797 2461247.70796587 14.2609 0.2438 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-25_23-59-18_20.00sec_0.00C_LIGHTs_0127.fits 2026-07-26.20746 2461247.70746333 13.9142 0.1636 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-25_23-58-34_20.00sec_-0.00C_LIGHTs_0126.fits 2026-07-24.21338 2461245.71337709 14.3716 0.1915 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-24_00-07-05_20.00sec_-0.00C_LIGHTs_0137.fits 2026-07-24.21277 2461245.71276925 13.9883 0.1351 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-24_00-06-13_20.00sec_-0.00C_LIGHTs_0136.fits 2026-07-23.21788 2461244.71788067 13.8417 0.0974 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-23_00-13-34_20.00sec_-0.00C_LIGHTs_0139.fits 2026-07-23.21701 2461244.71701106 13.8232 0.0929 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-23_00-12-19_20.00sec_-0.00C_LIGHTs_0138.fits 2026-07-22.23049 2461243.73048610 14.0046 0.1055 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-22_00-31-43_20.00sec_4.90C_LIGHT_0191.fits 2026-07-22.22991 2461243.72990546 14.0058 0.1068 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-22_00-30-53_20.00sec_5.00C_LIGHT_0190.fits 2026-07-22.20993 2461243.70992903 13.7889 0.0849 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-22_00-02-07_20.00sec_-0.00C_LIGHTs_0135.fits 2026-07-22.20932 2461243.70932274 14.0054 0.0988 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-22_00-01-15_20.00sec_-0.00C_LIGHTs_0134.fits 2026-07-21.23414 2461242.73414343 13.8336 0.0759 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-21_00-36-59_20.00sec_4.90C_LIGHT_0722.fits 2026-07-21.23365 2461242.73364750 13.8605 0.0785 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-21_00-36-17_20.00sec_5.00C_LIGHT_0721.fits 2026-07-21.21467 2461242.71467050 13.7979 0.0666 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-21_00-08-57_20.00sec_-0.00C_LIGHTs_0562.fits 2026-07-21.21384 2461242.71383674 13.7631 0.0665 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-21_00-07-45_20.00sec_-0.00C_LIGHTs_0561.fits 2026-07-20.23410 2461241.73410400 13.7083 0.0553 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-20_00-36-56_20.00sec_4.90C_LIGHT_0193.fits 2026-07-20.23338 2461241.73338164 13.7869 0.0589 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-20_00-35-54_20.00sec_4.90C_LIGHT_0192.fits 2026-07-20.22098 2461241.72098189 13.6786 0.0528 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-20_00-18-02_20.00sec_-0.00C_LIGHTs_0137.fits 2026-07-20.22010 2461241.72009556 13.7206 0.0542 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-20_00-16-46_20.00sec_-0.00C_LIGHTs_0136.fits 2026-07-18.22045 2461239.72045020 13.3180 0.0411 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-18_00-17-16_20.00sec_-0.00C_LIGHTs_0145.fits 2026-07-18.21991 2461239.71991154 13.2013 0.0387 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-18_00-16-30_20.00sec_-0.00C_LIGHTs_0144.fits 2026-07-16.23219 2461237.73219245 13.0690 0.0328 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-16_00-34-11_20.00sec_-0.00C_LIGHTs_0156.fits 2026-07-16.23045 2461237.73044968 13.2074 0.0323 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-16_00-31-40_20.00sec_5.00C_LIGHT_0173.fits 2026-07-16.22999 2461237.72999231 13.1566 0.0307 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-16_00-31-01_20.00sec_4.90C_LIGHT_0172.fits 2026-07-15.22701 2461236.72700648 13.1681 0.0319 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-15_00-26-43_20.00sec_5.00C_LIGHT_0173.fits 2026-07-15.22635 2461236.72634819 13.1061 0.0310 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-15_00-25-46_20.00sec_5.00C_LIGHT_0172.fits 2026-07-15.22109 2461236.72108834 13.2061 0.0355 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-15_00-18-12_20.00sec_-0.00C_LIGHTs_0151.fits 2026-07-15.22046 2461236.72045682 13.1096 0.0324 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-15_00-17-17_20.00sec_-0.00C_LIGHTs_0150.fits 2026-07-14.23277 2461235.73277457 13.1380 0.0325 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-14_00-35-01_20.00sec_5.00C_LIGHT_0179.fits 2026-07-14.23224 2461235.73223826 13.1051 0.0315 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-14_00-34-15_20.00sec_4.90C_LIGHT_0178.fits 2026-07-14.22853 2461235.72852869 13.0526 0.0291 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-14_00-28-54_20.00sec_0.00C_LIGHTs_0157.fits 2026-07-14.22776 2461235.72776365 13.0661 0.0291 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-14_00-27-48_20.00sec_-0.00C_LIGHTs_0156.fits 2026-07-13.30339 2461234.80338779 13.0529 0.0382 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-13_02-16-42_20.00sec_0.00C_LIGHTs_0078.fits 2026-07-13.30288 2461234.80287801 13.1808 0.0446 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-13_02-15-58_20.00sec_-0.00C_LIGHTs_0077.fits 2026-07-12.23508 2461233.73508359 12.9760 0.0393 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-12_00-38-21_20.00sec_5.00C_LIGHT_0181.fits 2026-07-12.23446 2461233.73446247 13.1120 0.0437 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-12_00-37-27_20.00sec_4.90C_LIGHT_0180.fits 2026-07-12.22880 2461233.72879741 13.0833 0.0426 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-12_00-29-18_20.00sec_-0.00C_LIGHTs_0159.fits 2026-07-12.22806 2461233.72806470 13.0691 0.0416 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-12_00-28-14_20.00sec_0.00C_LIGHTs_0158.fits 2026-07-11.22673 2461232.72673005 13.1196 0.0447 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-11_00-26-19_20.00sec_5.00C_LIGHT_0161.fits 2026-07-11.22620 2461232.72620475 13.1225 0.0422 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-11_00-25-34_20.00sec_5.00C_LIGHT_0160.fits 2026-07-10.22210 2461231.72210046 12.9637 0.0297 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-10_00-19-39_20.00sec_-0.00C_LIGHTs_0151.fits 2026-07-10.22178 2461231.72177571 12.9402 0.0338 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-10_00-19-11_20.00sec_4.90C_LIGHT_0161.fits 2026-07-10.22141 2461231.72141149 12.9108 0.0296 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-10_00-18-39_20.00sec_-0.00C_LIGHTs_0150.fits 2026-07-10.22129 2461231.72129253 12.9590 0.0320 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-10_00-18-29_20.00sec_4.90C_LIGHT_0160.fits 2026-07-09.24102 2461230.74101764 12.8488 0.0331 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-09_00-46-53_20.00sec_-0.00C_LIGHTs_0129.fits 2026-07-09.24039 2461230.74039225 12.8694 0.0322 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-09_00-45-59_20.00sec_0.00C_LIGHTs_0128.fits 2026-07-08.30163 2461229.80163265 12.8448 0.0464 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-08_02-14-11_20.00sec_5.00C_LIGHT_0117.fits 2026-07-08.30108 2461229.80108035 13.0031 0.0522 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-08_02-13-23_20.00sec_4.90C_LIGHT_0116.fits 2026-07-08.21883 2461229.71883409 12.9262 0.0269 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-08_00-14-57_20.00sec_-0.00C_LIGHTs_0149.fits 2026-07-08.21831 2461229.71830650 12.8287 0.0235 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-08_00-14-11_20.00sec_-0.00C_LIGHTs_0148.fits 2026-07-07.22661 2461228.72661216 12.8662 0.0224 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-07_00-26-09_20.00sec_5.00C_LIGHT_0167.fits 2026-07-07.22617 2461228.72617211 12.9088 0.0234 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-07_00-25-31_20.00sec_4.90C_LIGHT_0166.fits 2026-07-07.21499 2461228.71499479 12.8892 0.0262 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-07_00-09-25_20.00sec_0.00C_LIGHTs_0153.fits 2026-07-07.21436 2461228.71436270 12.8514 0.0249 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-07_00-08-30_20.00sec_-0.00C_LIGHTs_0152.fits 2026-07-04.23237 2461225.73237488 13.2008 0.0545 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-04_00-34-27_20.00sec_5.00C_LIGHT_0177.fits 2026-07-04.23177 2461225.73176618 13.1174 0.0498 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-07-04_00-33-34_20.00sec_4.90C_LIGHT_0176.fits 2026-07-04.21512 2461225.71511655 13.2187 0.0497 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-04_00-09-36_20.00sec_-0.00C_LIGHTs_0139.fits 2026-07-04.21461 2461225.71461197 13.1028 0.0431 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-07-04_00-08-52_20.00sec_-0.00C_LIGHTs_0138.fits 2026-06-23.27595 2461214.77595491 13.5003 0.0700 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-23_01-37-12_20.00sec_0.00C_LIGHTs_0229.fits 2026-06-23.27547 2461214.77546931 13.5799 0.0791 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-23_01-36-30_20.00sec_-0.00C_LIGHTs_0228.fits 2026-06-23.25448 2461214.75448117 13.4912 0.0845 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-06-23_01-06-17_20.00sec_5.00C_LIGHT_0179.fits 2026-06-23.25398 2461214.75398387 13.4010 0.0827 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-06-23_01-05-34_20.00sec_4.90C_LIGHT_0178.fits 2026-06-22.23952 2461213.73952189 13.5728 0.0603 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-06-22_00-44-44_20.00sec_5.00C_LIGHT_0185.fits 2026-06-22.23889 2461213.73888862 13.8308 0.0751 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-06-22_00-43-49_20.00sec_5.00C_LIGHT_0184.fits 2026-06-22.23769 2461213.73768609 13.5827 0.0526 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-22_00-42-06_20.00sec_0.00C_LIGHTs_0185.fits 2026-06-22.23720 2461213.73719815 13.8473 0.0701 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-22_00-41-23_20.00sec_-0.00C_LIGHTs_0184.fits 2026-06-21.24514 2461212.74514311 13.8068 0.0654 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-06-21_00-52-50_20.00sec_5.00C_LIGHT_0181.fits 2026-06-21.24465 2461212.74464988 13.9819 0.0772 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-06-21_00-52-07_20.00sec_4.90C_LIGHT_0180.fits 2026-06-21.23766 2461212.73766348 13.7631 0.0567 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-21_00-42-04_20.00sec_-0.00C_LIGHTs_0193.fits 2026-06-21.23720 2461212.73719844 13.7813 0.0595 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-21_00-41-23_20.00sec_0.00C_LIGHTs_0192.fits 2026-06-18.24430 2461209.74430156 13.9290 0.0537 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-18_00-51-37_20.00sec_0.00C_LIGHTs_0199.fits 2026-06-18.24382 2461209.74381521 13.8071 0.0491 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-18_00-50-55_20.00sec_-0.00C_LIGHTs_0198.fits 2026-06-17.15820 2461208.65819644 13.8243 0.0503 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-16_22-47-38_20.00sec_0.00C_LIGHTs_0071.fits 2026-06-17.15772 2461208.65772422 13.8055 0.0486 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-16_22-46-57_20.00sec_-0.00C_LIGHTs_0070.fits 2026-06-11.26178 2461202.76178216 14.1477 0.0674 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-11_01-16-47_20.00sec_0.00C_LIGHTs_0221.fits 2026-06-11.26134 2461202.76133907 14.0418 0.0634 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-11_01-16-09_20.00sec_-0.00C_LIGHTs_0220.fits 2026-06-09.30688 2461200.80688049 13.6220 0.0551 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-09_02-21-44_20.00sec_0.00C_LIGHTs_0131.fits 2026-06-09.30636 2461200.80635594 13.6058 0.0528 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-09_02-20-59_20.00sec_-0.00C_LIGHTs_0130.fits 2026-06-08.25970 2461199.75970102 13.5996 0.0420 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-08_01-13-48_20.00sec_-0.00C_LIGHTs_0162.fits 2026-06-08.25911 2461199.75910591 13.5703 0.0427 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-06-08_01-12-56_20.00sec_0.00C_LIGHTs_0161.fits 2026-06-08.25576 2461199.75575810 13.7730 0.0538 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-06-08_01-08-07_20.00sec_5.00C_LIGHT_0176.fits 2026-06-08.25510 2461199.75509588 13.8408 0.0579 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-06-08_01-07-10_20.00sec_4.90C_LIGHT_0175.fits 2026-05-25.27668 2461185.77668244 13.7128 0.0824 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-25_01-38-15_20.00sec_-0.00C_LIGHTs_0249.fits 2026-05-25.27610 2461185.77610193 13.6676 0.0814 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-25_01-37-25_20.00sec_0.00C_LIGHTs_0248.fits 2026-05-20.29835 2461180.79835282 14.0569 0.0684 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-20_02-09-27_20.00sec_-0.00C_LIGHTs_0259.fits 2026-05-19.29809 2461179.79808741 13.9408 0.0686 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-19_02-09-04_20.00sec_5.00C_LIGHT_0106.fits 2026-05-19.23370 2461179.73369523 13.9387 0.0563 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-19_00-36-21_20.00sec_0.00C_LIGHTs_0195.fits 2026-05-19.23325 2461179.73324549 13.9074 0.0541 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-19_00-35-42_20.00sec_-0.00C_LIGHTs_0194.fits 2026-05-18.26670 2461178.76669565 13.9308 0.0564 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-18_01-23-52_20.00sec_-0.00C_LIGHTs_0754.fits 2026-05-18.26656 2461178.76655797 13.8791 0.0630 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits 2026-05-18.26622 2461178.76621696 13.7753 0.0523 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-18_01-23-11_20.00sec_-0.00C_LIGHTs_0753.fits 2026-05-18.26598 2461178.76597569 13.8640 0.0620 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-18_01-22-50_20.00sec_5.00C_LIGHT_1602.fits 2026-05-17.27020 2461177.77020334 13.8544 0.0467 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-17_01-28-55_20.00sec_-0.00C_LIGHTs_0247.fits 2026-05-17.26974 2461177.76973906 13.9639 0.0512 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-17_01-28-15_20.00sec_-0.00C_LIGHTs_0246.fits 2026-05-16.27345 2461176.77345113 13.8779 0.0589 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-16_01-33-36_20.00sec_-0.00C_LIGHT_0110.fits 2026-05-16.27300 2461176.77299571 13.8707 0.0598 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-16_01-32-56_20.00sec_-0.00C_LIGHT_0109.fits 2026-05-14.32471 2461174.82471360 13.6602 0.0458 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-14_02-47-25_20.00sec_-4.90C_LIGHTs_0137.fits 2026-05-14.32424 2461174.82423640 13.7256 0.0466 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-14_02-46-44_20.00sec_-4.90C_LIGHTs_0136.fits 2026-05-13.30932 2461173.80932165 13.4237 0.0418 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-13_02-25-15_20.00sec_0.00C_LIGHTs_0264.fits 2026-05-13.30879 2461173.80878937 13.4488 0.0425 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-13_02-24-29_20.00sec_0.00C_LIGHTs_0263.fits 2026-05-13.29029 2461173.79028666 13.4745 0.0389 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-13_01-57-50_20.00sec_-0.00C_LIGHT_0250.fits 2026-05-13.28983 2461173.78983193 13.4764 0.0388 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-13_01-57-11_20.00sec_-0.00C_LIGHT_0249.fits 2026-05-12.31220 2461172.81220284 13.7649 0.0600 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-12_02-29-24_20.00sec_-5.00C_LIGHTs_0258.fits 2026-05-12.30994 2461172.80993912 13.7473 0.0486 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits 2026-05-12.29345 2461172.79344966 13.7425 0.0483 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-12_02-02-24_20.00sec_-5.00C_LIGHT_0252.fits 2026-05-12.29287 2461172.79287073 13.6670 0.0455 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-12_02-01-34_20.00sec_-4.90C_LIGHT_0251.fits 2026-05-11.27388 2461171.77387660 13.8312 0.0451 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-11_01-34-12_20.00sec_-4.90C_LIGHT_0280.fits 2026-05-11.27321 2461171.77320700 13.9082 0.0487 detection TTUQ2b1x1 wcs_fd_CVn-03-Q2b1x1_2026-05-11_01-33-15_20.00sec_-5.00C_LIGHT_0279.fits 2026-05-09.37704 2461169.87704225 14.3596 0.1141 detection TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-05-09_04-02-46_20.00sec_-4.90C_LIGHTs_0292.fits 2026-05-09.37626 2461169.87626370 14.3989 0.1153 detection TTUQ1b1x1 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Measurements excluded from the lightcurve

These measurements are excluded from the lightcurve, the plot and the AAVSO file. Reason visit_inconsistent: frames of the same field taken minutes apart disagree by more than the expected measurement scatter - a real star cannot change that fast, so at least one frame of the visit is corrupted (typically by patchy clouds) and there is no way to tell which one. Reason cloudy_frame: the frame failed the cloud check - its field stars disagree with the reference frame in a way uniform transparency loss cannot explain. The remaining reasons mean the measurement could not be made on that image at all, so no magnitude is shown: bad_ccd_region - the position falls on a masked part of the detector (bad_region.lst of that camera); saturated - the star is there but too bright to measure; blank_pixels_in_aperture, magnitude_calibration_failed and measurement_failed - the aperture contained blank pixels, the frame could not be calibrated, or the measuring tool failed. These images WERE taken and WERE measured: they are listed here so that a rejected measurement is never mistaken for a gap in the coverage. The excluded rows are kept in excluded_measurements.dat.

Date (UTC) JD(UTC) mag err reason camera image 2026-09-19.12291 2461302.62290635 15.2508 99.0000 cloudy_frame TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-09-18_21-56-49_20.00sec_-0.00C_LIGHTs_0071.fits 2026-09-19.12231 2461302.62231137 15.2848 99.0000 cloudy_frame TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-09-18_21-55-57_20.00sec_0.00C_LIGHTs_0070.fits 2026-09-14.13080 2461297.63079799 15.4831 99.0000 cloudy_frame TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-09-13_22-08-10_20.00sec_-0.00C_LIGHTs_0075.fits 2026-09-14.13027 2461297.63027426 15.5229 99.0000 cloudy_frame TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-09-13_22-07-25_20.00sec_-0.00C_LIGHTs_0074.fits 2026-09-12.14300 2461295.64300407 15.4558 99.0000 cloudy_frame TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-09-11_22-25-45_20.00sec_-0.00C_LIGHTs_0095.fits 2026-09-12.14214 2461295.64213924 15.4486 99.0000 cloudy_frame TTUQ1b1x1 wcs_fd_CVn-03-Q1b1x1_2026-09-11_22-24-30_20.00sec_-0.00C_LIGHTs_0094.fits 2026-09-08.15313 2461291.65313098 15.2841 99.0000 cloudy_frame TTUQ2b1x1 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