Monitored source TCP J22571796+4707418

Position: 22:57:18.05 +47:07:42.1 · cameras: TTUQ1b1x1 TTUQ2b1x1 · 24 detections, 198 upper limits · 56 excluded from the lightcurve

Manual detection threshold: measurements fainter than mag 15.00 are published as upper limits at the measured magnitude, because the photometric aperture is contaminated by light from an unrelated nearby source. Below that threshold a measurement only bounds the target brightness from above; only when the target outshines the contaminant does a measurement count as a detection (status below_threshold in the table below marks the demoted measurements).

Date range: 2026-01-21.12770 .. 2026-09-19.32848 (UTC) · JD 2461061.62770 .. 2461302.82848

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 2026-09-19.32848 2461302.82848494 16.0319 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-19_02-52-51_20.00sec_0.00C_LIGHT_0385.fits 2026-09-19.32791 2461302.82790958 15.9713 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-19_02-52-01_20.00sec_0.00C_LIGHTs_0345.fits 2026-09-19.32753 2461302.82752914 16.0223 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-19_02-51-28_20.00sec_0.00C_LIGHT_0384.fits 2026-09-19.32723 2461302.82722795 16.0224 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-19_02-51-02_20.00sec_-0.00C_LIGHTs_0344.fits 2026-09-18.34395 2461301.84394878 16.0310 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-18_03-15-07_20.00sec_-0.00C_LIGHT_0403.fits 2026-09-18.34331 2461301.84331338 16.0881 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-18_03-14-12_20.00sec_-0.00C_LIGHT_0402.fits 2026-09-14.32045 2461297.82044536 16.0848 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-14_02-41-16_20.00sec_-0.00C_LIGHTs_0335.fits 2026-09-14.31969 2461297.81968652 16.1301 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-14_02-40-10_20.00sec_-0.00C_LIGHTs_0334.fits 2026-09-14.31527 2461297.81527484 16.1239 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-14_02-33-49_20.00sec_-0.00C_LIGHT_0375.fits 2026-09-14.31473 2461297.81473380 16.0895 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-14_02-33-03_20.00sec_-0.00C_LIGHT_0374.fits 2026-09-12.32850 2461295.82850037 16.0003 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-12_02-52-52_20.00sec_0.00C_LIGHT_0387.fits 2026-09-12.32788 2461295.82788498 15.9916 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-12_02-51-59_20.00sec_-0.00C_LIGHT_0386.fits 2026-09-09.41248 2461292.91248072 15.9511 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-09_04-53-48_20.00sec_0.00C_LIGHT_0318.fits 2026-09-09.41200 2461292.91199583 15.9745 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-09_04-53-06_20.00sec_-0.00C_LIGHT_0317.fits 2026-09-09.40209 2461292.90209203 16.0518 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-09_04-38-50_20.00sec_-0.00C_LIGHTs_0289.fits 2026-09-09.40142 2461292.90142170 16.0352 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-09_04-37-52_20.00sec_-0.00C_LIGHTs_0288.fits 2026-09-08.45173 2461291.95172786 15.8799 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-08_05-50-19_20.00sec_-0.00C_LIGHTs_0383.fits 2026-09-08.45093 2461291.95093027 15.9030 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-08_05-49-10_20.00sec_-0.00C_LIGHTs_0382.fits 2026-09-07.33727 2461290.83726963 16.0104 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-07_03-05-30_20.00sec_-0.00C_LIGHT_0366.fits 2026-09-07.33661 2461290.83660626 16.0482 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-07_03-04-32_20.00sec_-0.00C_LIGHT_0365.fits 2026-09-06.44987 2461289.94986810 15.7733 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-06_05-47-38_20.00sec_0.00C_LIGHTs_0364.fits 2026-09-06.44908 2461289.94907704 15.7767 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-06_05-46-30_20.00sec_-0.00C_LIGHTs_0363.fits 2026-09-05.38402 2461288.88401598 15.6067 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-05_04-12-48_20.00sec_0.00C_LIGHTs_0295.fits 2026-09-05.38333 2461288.88332631 15.6393 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-05_04-11-49_20.00sec_-0.00C_LIGHTs_0294.fits 2026-09-05.38020 2461288.88020253 15.6972 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-05_04-07-19_20.00sec_-0.00C_LIGHT_0331.fits 2026-09-05.37954 2461288.87954029 15.7350 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-05_04-06-22_20.00sec_-0.00C_LIGHT_0330.fits 2026-09-03.38122 2461286.88121769 15.5111 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-03_04-08-47_20.00sec_0.00C_LIGHTs_0370.fits 2026-09-03.38055 2461286.88054869 15.5090 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-03_04-07-49_20.00sec_-0.00C_LIGHTs_0369.fits 2026-09-03.33822 2461286.83822150 15.4434 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-03_03-06-52_20.00sec_-0.00C_LIGHT_0357.fits 2026-09-03.33761 2461286.83760630 15.3945 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-03_03-05-59_20.00sec_-0.00C_LIGHT_0356.fits 2026-09-01.34100 2461284.84099983 15.1207 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-01_03-10-52_20.00sec_-0.00C_LIGHT_0367.fits 2026-09-01.34033 2461284.84032806 15.1665 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-01_03-09-54_20.00sec_-0.00C_LIGHT_0366.fits 2026-09-01.32809 2461284.82809108 15.2807 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-01_02-52-17_20.00sec_-0.00C_LIGHTs_0325.fits 2026-09-01.32749 2461284.82749181 15.2440 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-01_02-51-25_20.00sec_-0.00C_LIGHTs_0324.fits 2026-08-31.31431 2461283.81430639 15.4300 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-31_02-32-26_20.00sec_0.00C_LIGHTs_0317.fits 2026-08-31.31367 2461283.81366854 15.4643 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-31_02-31-30_20.00sec_-0.00C_LIGHTs_0316.fits 2026-08-31.30891 2461283.80891203 15.3436 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-31_02-24-39_20.00sec_-0.00C_LIGHT_0353.fits 2026-08-31.30819 2461283.80818668 15.3770 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-31_02-23-37_20.00sec_-0.00C_LIGHT_0352.fits 2026-08-30.36819 2461282.86818630 15.1716 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-30_03-50-01_20.00sec_-0.00C_LIGHT_0313.fits 2026-08-30.36763 2461282.86762941 15.1681 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-30_03-49-13_20.00sec_-0.00C_LIGHT_0312.fits 2026-08-30.36018 2461282.86018381 15.2116 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-30_03-38-29_20.00sec_0.00C_LIGHTs_0273.fits 2026-08-30.35957 2461282.85957204 15.2532 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-30_03-37-37_20.00sec_-0.00C_LIGHTs_0272.fits 2026-08-29.29867 2461281.79867020 14.8770 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-29_02-09-55_20.00sec_-0.00C_LIGHT_0323.fits 2026-08-29.29813 2461281.79812701 14.9277 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-29_02-09-08_20.00sec_0.00C_LIGHT_0322.fits 2026-08-29.28844 2461281.78844409 14.9228 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-29_01-55-11_20.00sec_-0.00C_LIGHTs_0285.fits 2026-08-29.28781 2461281.78781365 14.8892 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-29_01-54-17_20.00sec_-0.00C_LIGHTs_0284.fits 2026-08-28.32011 2461280.82011351 14.8175 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-28_02-40-47_20.00sec_0.00C_LIGHT_0275.fits 2026-08-28.31966 2461280.81965995 14.8350 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-28_02-40-08_20.00sec_-0.00C_LIGHT_0274.fits 2026-08-28.31676 2461280.81676131 14.9232 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-28_02-35-58_20.00sec_-0.00C_LIGHTs_0237.fits 2026-08-28.31614 2461280.81613706 14.9089 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-28_02-35-04_20.00sec_-0.00C_LIGHTs_0236.fits 2026-08-25.41263 2461277.91262581 16.0180 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-25_04-54-00_20.00sec_0.00C_LIGHTs_0283.fits 2026-08-25.41197 2461277.91197152 15.9850 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-25_04-53-04_20.00sec_-0.00C_LIGHTs_0282.fits 2026-08-25.39977 2461277.89977093 15.8994 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-25_04-35-30_20.00sec_-0.00C_LIGHT_0328.fits 2026-08-25.39931 2461277.89930596 15.8952 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-25_04-34-50_20.00sec_-0.00C_LIGHT_0327.fits 2026-08-24.31163 2461276.81162743 15.6480 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-24_02-28-34_20.00sec_0.00C_LIGHT_0339.fits 2026-08-24.31105 2461276.81104627 15.6587 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-24_02-27-44_20.00sec_-0.00C_LIGHT_0338.fits 2026-08-24.30449 2461276.80448975 15.6488 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-24_02-18-17_20.00sec_0.00C_LIGHTs_0309.fits 2026-08-24.30362 2461276.80362139 15.6493 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-24_02-17-02_20.00sec_-0.00C_LIGHTs_0308.fits 2026-08-19.33357 2461271.83357375 15.0886 0.1544 below_threshold TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-19_03-00-10_20.00sec_0.00C_LIGHTs_0309.fits 2026-08-19.33256 2461271.83255855 15.4156 0.2007 below_threshold TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-19_02-58-43_20.00sec_0.00C_LIGHTs_0308.fits 2026-08-19.32822 2461271.82822344 15.5564 0.2209 below_threshold TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-19_02-52-28_20.00sec_-0.00C_LIGHT_0341.fits 2026-08-19.32763 2461271.82763390 15.0281 0.1403 below_threshold TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-19_02-51-37_20.00sec_-0.00C_LIGHT_0340.fits 2026-08-18.32091 2461270.82090981 15.4432 0.1854 below_threshold TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-18_02-41-56_20.00sec_-0.00C_LIGHTs_0309.fits 2026-08-18.32023 2461270.82022921 15.1230 0.1353 below_threshold TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-18_02-40-57_20.00sec_-0.00C_LIGHTs_0308.fits 2026-08-18.31804 2461270.81803852 15.0673 0.1326 below_threshold TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-18_02-37-48_20.00sec_-0.00C_LIGHT_0341.fits 2026-08-18.31729 2461270.81729141 15.4643 0.1926 below_threshold TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-18_02-36-43_20.00sec_-0.00C_LIGHT_0340.fits 2026-08-17.32295 2461269.82295123 15.0499 0.1633 below_threshold TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-17_02-44-52_20.00sec_0.00C_LIGHT_0343.fits 2026-08-17.32234 2461269.82234090 14.9601 0.1592 detection TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-17_02-44-00_20.00sec_-0.00C_LIGHT_0342.fits 2026-08-17.31845 2461269.81845078 15.1497 0.1790 below_threshold TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-17_02-38-24_20.00sec_-0.00C_LIGHTs_0317.fits 2026-08-17.31788 2461269.81788112 15.1851 0.1910 below_threshold TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-17_02-37-34_20.00sec_-0.00C_LIGHTs_0316.fits 2026-08-16.37123 2461268.87123302 14.8991 0.1524 detection TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-16_03-54-24_20.00sec_-0.00C_LIGHTs_0050.fits 2026-08-16.37053 2461268.87052544 14.8773 0.1506 detection TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-16_03-53-23_20.00sec_-0.00C_LIGHTs_0049.fits 2026-08-16.24946 2461268.74946163 15.0397 0.1649 below_threshold TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-16_00-59-03_20.00sec_-0.00C_LIGHT_0241.fits 2026-08-16.24894 2461268.74893852 15.0509 0.1648 below_threshold TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-16_00-58-18_20.00sec_-0.00C_LIGHT_0240.fits 2026-08-15.35119 2461267.85119498 14.7103 0.1009 detection TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-15_03-25-33_20.00sec_-0.00C_LIGHTs_0307.fits 2026-08-15.35058 2461267.85057855 14.9020 0.1230 detection TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-15_03-24-39_20.00sec_-0.00C_LIGHTs_0306.fits 2026-08-15.31858 2461267.81858414 14.9753 0.1447 detection TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-15_02-38-35_20.00sec_-0.00C_LIGHT_0339.fits 2026-08-15.31799 2461267.81799463 15.0321 0.1493 below_threshold TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-15_02-37-44_20.00sec_-0.00C_LIGHT_0338.fits 2026-08-13.35803 2461265.85803120 14.5806 0.1316 detection TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-13_03-35-23_20.00sec_-0.00C_LIGHT_0278.fits 2026-08-13.35747 2461265.85746943 14.7034 0.1227 detection TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-13_03-34-35_20.00sec_-0.00C_LIGHT_0277.fits 2026-08-12.38074 2461264.88073866 14.4122 0.0866 detection TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-12_04-08-05_20.00sec_0.00C_LIGHTs_0241.fits 2026-08-12.37986 2461264.87985975 14.5259 0.0964 detection TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-12_04-06-49_20.00sec_-0.00C_LIGHTs_0240.fits 2026-08-12.34482 2461264.84481616 14.4940 0.0866 detection TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-12_03-16-22_20.00sec_0.00C_LIGHT_0321.fits 2026-08-12.34427 2461264.84427065 14.2242 0.0705 detection TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-12_03-15-34_20.00sec_-0.00C_LIGHT_0320.fits 2026-08-11.43979 2461263.93978963 14.4172 0.0807 detection TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-11_05-33-07_20.00sec_-0.00C_LIGHTs_0420.fits 2026-08-11.43917 2461263.93917041 14.3878 0.0803 detection TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-11_05-32-14_20.00sec_-0.00C_LIGHTs_0419.fits 2026-08-11.34255 2461263.84255317 14.4468 0.0786 detection TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-11_03-13-06_20.00sec_-0.00C_LIGHT_0325.fits 2026-08-11.34198 2461263.84197745 14.4314 0.0774 detection TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-11_03-12-16_20.00sec_-0.00C_LIGHT_0324.fits 2026-08-10.32645 2461262.82644870 14.3580 0.0842 detection 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wcs_fd_Lac-02-Q2b1x1_2026-06-22_02-35-18_20.00sec_4.90C_LIGHT_0303.fits 2026-06-22.31572 2461213.81571954 15.6078 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-06-22_02-34-28_20.00sec_5.00C_LIGHT_0302.fits 2026-06-21.32304 2461212.82304117 15.6835 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-06-21_02-45-00_20.00sec_4.90C_LIGHT_0299.fits 2026-06-21.32247 2461212.82247272 15.6711 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-06-21_02-44-11_20.00sec_4.90C_LIGHT_0298.fits 2026-06-21.30597 2461212.80597091 15.7652 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-06-21_02-20-25_20.00sec_-0.00C_LIGHTs_0309.fits 2026-06-21.30548 2461212.80547551 15.7509 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-06-21_02-19-43_20.00sec_-0.00C_LIGHTs_0308.fits 2026-06-20.32555 2461211.82554885 15.5792 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-06-20_02-48-37_20.00sec_5.00C_LIGHT_0313.fits 2026-06-20.32501 2461211.82501108 15.5896 99.0000 upperlimit 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2461201.93560062 15.3729 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-06-10_05-27-05_20.00sec_-0.00C_LIGHTs_0236.fits 2026-06-10.39588 2461201.89587569 15.5375 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-06-10_04-29-53_20.00sec_5.00C_LIGHT_0178.fits 2026-06-10.39543 2461201.89543278 15.5339 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-06-10_04-29-15_20.00sec_5.00C_LIGHT_0177.fits 2026-06-09.39388 2461200.89388383 15.5657 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-06-09_04-27-01_20.00sec_5.00C_LIGHT_0265.fits 2026-06-09.39336 2461200.89336340 15.5470 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-06-09_04-26-16_20.00sec_5.00C_LIGHT_0264.fits 2026-06-09.37299 2461200.87299177 15.6469 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-06-09_03-56-56_20.00sec_-0.00C_LIGHTs_0241.fits 2026-06-09.37213 2461200.87213035 15.6460 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-06-09_03-55-42_20.00sec_-0.00C_LIGHTs_0240.fits 2026-06-08.34425 2461199.84425119 15.5347 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-06-08_03-15-33_20.00sec_-0.00C_LIGHTs_0296.fits 2026-06-08.34378 2461199.84378284 15.5028 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-06-08_03-14-52_20.00sec_-0.00C_LIGHTs_0295.fits 2026-05-16.38854 2461176.88853609 15.5697 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-05-16_04-19-19_20.00sec_-0.00C_LIGHT_0288.fits 2026-05-16.38809 2461176.88808933 15.5093 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-05-16_04-18-40_20.00sec_-0.00C_LIGHT_0287.fits 2026-05-16.36725 2461176.86724981 15.5935 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-05-16_03-48-40_20.00sec_-0.00C_LIGHTs_0275.fits 2026-05-16.36678 2461176.86678495 15.6063 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-05-16_03-48-00_20.00sec_-0.00C_LIGHTs_0274.fits 2026-05-13.41432 2461173.91431751 15.7520 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-05-13_04-56-27_20.00sec_-5.00C_LIGHTs_0421.fits 2026-05-13.41375 2461173.91375200 15.7867 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-05-13_04-55-38_20.00sec_-4.90C_LIGHTs_0420.fits 2026-04-17.42189 2461147.92188640 14.8932 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-04-17_05-07-20_20.00sec_-4.90C_LIGHT_0373.fits 2026-04-17.42127 2461147.92127469 14.9244 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-04-17_05-06-28_20.00sec_-5.00C_LIGHT_0372.fits 2026-04-16.43953 2461146.93953328 15.6655 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-04-16_05-32-45_20.00sec_-4.90C_LIGHTs_0359.fits 2026-04-16.43883 2461146.93883347 15.6465 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-04-16_05-31-45_20.00sec_-4.90C_LIGHTs_0358.fits 2026-03-30.46864 2461129.96864359 14.9657 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-03-30_06-14-40_20.00sec_-10.00C_LIGHT_0412.fits 2026-03-30.46812 2461129.96812133 14.9510 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-03-30_06-13-55_20.00sec_-10.00C_LIGHT_0411.fits 2026-03-22.46048 2461121.96047891 15.3457 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-03-22_06-02-55_20.00sec_-15.00C_LIGHT_0356.fits 2026-03-22.45997 2461121.95997076 15.3787 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-03-22_06-02-11_20.00sec_-15.00C_LIGHT_0355.fits 2026-03-21.47159 2461120.97159487 15.3352 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-03-21_06-18-55_20.00sec_-15.00C_LIGHT_0519.fits 2026-03-21.47105 2461120.97104728 15.3101 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-03-21_06-18-08_20.00sec_-15.00C_LIGHT_0518.fits 2026-03-20.47389 2461119.97388633 15.2748 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-03-20_06-22-13_20.00sec_-15.00C_LIGHT_0478.fits 2026-03-20.47327 2461119.97326506 15.2989 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-03-20_06-21-20_20.00sec_-14.90C_LIGHT_0477.fits 2026-02-27.50798 2461099.00797574 14.9417 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-02-27_06-11-19_20.00sec_-14.90C_LIGHT_0310.fits 2026-02-27.50744 2461099.00743554 14.9393 99.0000 upperlimit TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-02-27_06-10-32_20.00sec_-14.90C_LIGHT_0309.fits 2026-01-21.12817 2461061.62817146 15.7517 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-01-20_21-04-24_20.00sec_-14.90C_LIGHT_0103.fits 2026-01-21.12770 2461061.62769848 15.7004 99.0000 upperlimit TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-01-20_21-03-43_20.00sec_-15.00C_LIGHT_0102.fits

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 2026-09-18.36173 2461301.86172506 16.0330 99.0000 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-18_03-40-43_20.00sec_-0.00C_LIGHTs_0368.fits 2026-09-18.36095 2461301.86095184 15.7776 0.3008 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-18_03-39-36_20.00sec_0.00C_LIGHTs_0367.fits 2026-09-15.38226 2461298.88226225 15.3841 99.0000 cloudy_frame TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-15_04-10-17_20.00sec_-0.00C_LIGHT_0410.fits 2026-09-15.38180 2461298.88179506 15.3202 99.0000 cloudy_frame TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-15_04-09-37_20.00sec_0.00C_LIGHT_0409.fits 2026-09-12.34116 2461295.84116046 15.9682 99.0000 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-12_03-11-06_20.00sec_-0.00C_LIGHTs_0355.fits 2026-09-12.34032 2461295.84031528 15.9014 0.3389 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-12_03-09-53_20.00sec_-0.00C_LIGHTs_0354.fits 2026-09-08.42598 2461291.92598078 15.8837 99.0000 cloudy_frame TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-08_05-13-14_20.00sec_0.00C_LIGHT_0397.fits 2026-09-08.42509 2461291.92508831 15.8962 99.0000 cloudy_frame TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-08_05-11-57_20.00sec_-0.00C_LIGHT_0396.fits 2026-09-07.38754 2461290.88754439 16.0002 0.3583 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-07_04-17-53_20.00sec_-0.00C_LIGHTs_0371.fits 2026-09-07.38680 2461290.88679979 16.0554 99.0000 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-09-07_04-16-49_20.00sec_-0.00C_LIGHTs_0370.fits 2026-09-06.40456 2461289.90455895 15.8205 99.0000 cloudy_frame TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-06_04-42-23_20.00sec_-0.00C_LIGHT_0387.fits 2026-09-06.40396 2461289.90396208 15.7307 99.0000 cloudy_frame TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-09-06_04-41-32_20.00sec_-0.00C_LIGHT_0386.fits 2026-08-22.47580 2461274.97580046 14.7504 99.0000 cloudy_frame TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-22_06-24-59_20.00sec_-0.00C_LIGHTs_0237.fits 2026-08-22.47522 2461274.97521625 14.8218 99.0000 cloudy_frame TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-08-22_06-24-08_20.00sec_-0.00C_LIGHTs_0236.fits 2026-08-22.46518 2461274.96517751 15.2684 99.0000 cloudy_frame TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-22_06-09-41_20.00sec_0.00C_LIGHT_0259.fits 2026-08-22.46472 2461274.96471576 15.3316 99.0000 cloudy_frame TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-08-22_06-09-01_20.00sec_-0.00C_LIGHT_0258.fits 2026-07-22.35162 2461243.85162406 15.8801 0.3440 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-07-22_03-26-10_20.00sec_-0.00C_LIGHTs_0299.fits 2026-07-22.35081 2461243.85080677 15.9356 99.0000 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-07-22_03-24-59_20.00sec_-0.00C_LIGHTs_0298.fits 2026-07-21.33748 2461242.83748211 15.7467 0.3195 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-07-21_03-05-48_20.00sec_-0.00C_LIGHTs_0722.fits 2026-07-21.33681 2461242.83680793 15.8913 99.0000 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-07-21_03-04-50_20.00sec_-0.00C_LIGHTs_0721.fits 2026-07-20.40299 2461241.90298650 15.9168 99.0000 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-07-20_04-40-08_20.00sec_-0.00C_LIGHTs_0335.fits 2026-07-20.40231 2461241.90231415 15.8832 0.3345 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-07-20_04-39-09_20.00sec_-0.00C_LIGHTs_0334.fits 2026-07-14.42625 2461235.92624826 15.8417 0.3368 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-07-14_05-13-37_20.00sec_0.00C_LIGHTs_0329.fits 2026-07-14.42530 2461235.92530363 15.9110 99.0000 visit_inconsistent TTUQ1b1x1 wcs_fd_Lac-02-Q1b1x1_2026-07-14_05-12-16_20.00sec_0.00C_LIGHTs_0328.fits 2026-07-13.42878 2461234.92878009 15.8038 99.0000 visit_inconsistent TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-07-13_05-17-16_20.00sec_5.00C_LIGHT_0283.fits 2026-07-13.42803 2461234.92802831 15.7505 0.3314 visit_inconsistent TTUQ2b1x1 wcs_fd_Lac-02-Q2b1x1_2026-07-13_05-16-11_20.00sec_5.00C_LIGHT_0282.fits 2026-06-22.31487 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