Hi!
A series of BVRI observations throughout most of the night, below in CBA format.
Magnus Larsson
------------------------------------------------------------------ PHOTOMETRIC CCD OBSERVATIONS SN2022hrs on April 20, 2022 ; JD 2459690.372 to 2459690.583 ------------------------------------------------------------------ Observer : Magnus Larsson, Malmö, Sweden Instruments: Celestron C11 with Starizona 0.7x reducer Atik383L+ CCD
------------------------------------------------------------------ LesvePhotometry version = V1.2.0.130 Observation site Latitude = 55 32 53 Observation site Longitude = 13 21 53
Obj1 SN2022hrs
Reference star(s) Star1 AAVSO Label=138 AUID 000-BPJ-064
Check star(s) Star2 AAVSO Label=142 AUID 000-BPJ-065 Star3 AAVSO Label=146 AUID 000-BPJ-066 Star4 AAVSO Label=150 AUID 000-BPJ-067
Aperture radius 1.4 * FWHM Gap 6 (pixels) 6.47 arcsec Annulus 5 (pixels) 5.39 arcsec
T (JD) Obj1 Err Star1 Star2 Star3 Star4 Airm Filter Group SkyBri. Expo time SnapShots LimitingMagnitude 2459690.371879 13.502 0.017 13.822 14.152 14.559 14.963 1.4 V na 17.47 90.0 1 17.6 2459690.373166 13.740 0.024 14.369 14.745 15.241 15.851 1.4 B na 18.24 120.0 1 17.6 2459690.374465 13.217 0.015 13.490 13.870 14.273 14.561 1.4 R na 17.27 90.0 1 17.4 2459690.375591 13.400 0.028 13.177 13.541 13.896 14.205 1.4 I na 17.59 90.0 1 16.7 2459690.379535 13.518 0.018 13.822 14.213 14.581 15.031 1.4 V na 17.59 90.0 1 17.5 2459690.380836 13.718 0.026 14.369 14.738 15.204 15.670 1.4 B na 18.27 120.0 1 17.5 2459690.382146 13.206 0.015 13.490 13.864 14.232 14.552 1.4 R na 17.32 90.0 1 17.3 2459690.384403 13.525 0.018 13.822 14.187 14.562 14.926 1.4 V na 17.60 90.0 1 17.6 2459690.385703 13.636 0.023 14.369 14.683 15.187 15.767 1.4 B na 18.23 120.0 1 17.6 2459690.387016 13.180 0.016 13.490 13.825 14.155 14.576 1.4 R na 17.35 90.0 1 17.3 2459690.388131 13.379 0.032 13.177 13.524 13.927 14.102 1.4 I na 17.65 90.0 1 16.5 2459690.389291 13.494 0.017 13.822 14.132 14.602 14.910 1.4 V na 17.63 90.0 1 17.5 2459690.390590 13.697 0.020 14.369 14.752 15.173 15.674 1.4 B na 18.28 120.0 1 17.8 2459690.391896 13.214 0.015 13.490 13.849 14.214 14.554 1.4 R na 17.36 90.0 1 17.3 2459690.393010 13.301 0.031 13.177 13.463 13.873 14.071 1.4 I na 17.60 90.0 1 16.5 2459690.394166 13.485 0.017 13.822 14.191 14.629 14.897 1.3 V na 17.64 90.0 1 17.6 2459690.395457 13.716 0.020 14.369 14.768 15.159 15.675 1.3 B na 18.29 120.0 1 17.9 2459690.396771 13.212 0.015 13.490 13.864 14.234 14.544 1.3 R na 17.39 90.0 1 17.4 2459690.397898 13.354 0.027 13.177 13.533 13.856 14.093 1.3 I na 17.62 90.0 1 16.7 2459690.399053 13.498 0.018 13.822 14.150 14.594 14.962 1.3 V na 17.64 90.0 1 17.5 2459690.400341 13.720 0.022 14.369 14.771 15.228 15.749 1.3 B na 18.38 120.0 1 17.7 2459690.401655 13.202 0.015 13.490 13.891 14.256 14.594 1.3 R na 17.43 90.0 1 17.4 2459690.402781 13.409 0.030 13.177 13.581 13.890 14.217 1.3 I na 17.65 90.0 1 16.6 2459690.403928 13.489 0.015 13.822 14.185 14.567 14.953 1.3 V na 17.67 90.0 1 17.7 2459690.405226 13.655 0.021 14.369 14.759 15.092 15.669 1.3 B na 18.33 120.0 1 17.8 2459690.406525 13.221 0.015 13.490 13.841 14.235 14.656 1.3 R na 17.46 90.0 1 17.4 2459690.407651 13.368 0.026 13.177 13.586 13.877 14.188 1.3 I na 17.65 90.0 1 16.8 2459690.408810 13.498 0.016 13.822 14.175 14.559 14.953 1.3 V na 17.70 90.0 1 17.7 2459690.410098 13.670 0.020 14.369 14.721 15.129 15.762 1.3 B na 18.31 120.0 1 17.8 2459690.411412 13.196 0.014 13.490 13.854 14.202 14.504 1.3 R na 17.43 90.0 1 17.4 2459690.412537 13.337 0.026 13.177 13.542 13.911 14.169 1.3 I na 17.66 90.0 1 16.7 2459690.419398 13.485 0.018 13.822 14.205 14.635 14.912 1.3 V na 17.73 90.0 1 17.5 2459690.420686 13.655 0.022 14.369 14.692 15.130 15.686 1.3 B na 18.37 120.0 1 17.7 2459690.421996 13.192 0.012 13.490 13.862 14.240 14.542 1.3 R na 17.40 90.0 1 17.7 2459690.423111 13.371 0.022 13.177 13.529 13.915 14.172 1.3 I na 17.63 90.0 1 17.0 2459690.424256 13.467 0.017 13.822 14.196 14.547 15.038 1.3 V na 17.74 90.0 1 17.5 2459690.425543 13.694 0.022 14.369 14.755 15.281 15.690 1.3 B na 18.42 120.0 1 17.7 2459690.426854 13.196 0.013 13.490 13.867 14.242 14.604 1.3 R na 17.44 90.0 1 17.7 2459690.427980 13.351 0.022 13.177 13.520 13.885 14.137 1.3 I na 17.60 90.0 1 17.0 2459690.429133 13.478 0.016 13.822 14.194 14.555 14.929 1.3 V na 17.71 90.0 1 17.6 2459690.430422 13.651 0.020 14.369 14.752 15.205 15.605 1.3 B na 18.37 120.0 1 17.8 2459690.431724 13.191 0.013 13.490 13.885 14.206 14.513 1.3 R na 17.43 90.0 1 17.5 2459690.432849 13.373 0.020 13.177 13.543 13.922 14.155 1.3 I na 17.50 90.0 1 17.2 2459690.434003 13.501 0.016 13.822 14.227 14.581 14.999 1.4 V na 17.75 90.0 1 17.7 2459690.435291 13.659 0.019 14.369 14.724 15.149 15.698 1.4 B na 18.38 120.0 1 17.9 2459690.436602 13.188 0.012 13.490 13.856 14.213 14.594 1.4 R na 17.41 90.0 1 17.7 2459690.437728 13.339 0.022 13.177 13.511 13.888 14.099 1.4 I na 17.54 90.0 1 16.9 2459690.438884 13.482 0.018 13.822 14.197 14.525 14.950 1.4 V na 17.76 90.0 1 17.5 2459690.440183 13.634 0.022 14.369 14.690 15.119 15.629 1.4 B na 18.41 120.0 1 17.7 2459690.441494 13.176 0.015 13.490 13.851 14.197 14.538 1.4 R na 17.47 90.0 1 17.4 2459690.442622 13.346 0.025 13.177 13.482 13.912 14.141 1.4 I na 17.61 90.0 1 16.8 2459690.443775 13.478 0.016 13.822 14.139 14.506 14.916 1.4 V na 17.74 90.0 1 17.7 2459690.445064 13.619 0.021 14.369 14.772 15.153 15.739 1.4 B na 18.38 120.0 1 17.7 2459690.446365 13.184 0.014 13.490 13.875 14.238 14.562 1.4 R na 17.48 90.0 1 17.5 2459690.447492 13.350 0.021 13.177 13.537 13.868 14.256 1.4 I na 17.54 90.0 1 17.0 2459690.448648 13.474 0.018 13.822 14.183 14.579 14.975 1.4 V na 17.75 90.0 1 17.5 2459690.449949 13.636 0.022 14.369 14.749 15.119 15.772 1.4 B na 18.41 120.0 1 17.7 2459690.451250 13.202 0.013 13.490 13.867 14.203 14.581 1.4 R na 17.47 90.0 1 17.6 2459690.452376 13.342 0.024 13.177 13.554 13.906 14.158 1.4 I na 17.60 90.0 1 16.8 2459690.453529 13.480 0.018 13.822 14.134 14.576 14.946 1.4 V na 17.79 90.0 1 17.4 2459690.454817 13.679 0.020 14.369 14.757 15.129 15.674 1.4 B na 18.41 120.0 1 17.8 2459690.456129 13.174 0.014 13.490 13.836 14.220 14.602 1.4 R na 17.49 90.0 1 17.5 2459690.461104 13.485 0.012 13.822 14.203 14.580 14.994 1.4 V na 17.74 90.0 1 18.1 2459690.462403 13.645 0.019 14.369 14.667 15.159 15.676 1.4 B na 18.33 120.0 1 17.9 2459690.463704 13.182 0.012 13.490 13.871 14.220 14.541 1.4 R na 17.45 90.0 1 17.7 2459690.464830 13.358 0.020 13.177 13.517 13.873 14.190 1.4 I na 17.57 90.0 1 17.1 2459690.465970 13.488 0.012 13.822 14.180 14.568 14.967 1.4 V na 17.70 90.0 1 18.1 2459690.467266 13.656 0.017 14.369 14.655 15.101 15.650 1.4 B na 18.28 120.0 1 18.1 2459690.468576 13.172 0.011 13.490 13.887 14.235 14.537 1.4 R na 17.43 90.0 1 17.8 2459690.470842 13.495 0.013 13.822 14.200 14.590 14.948 1.4 V na 17.71 90.0 1 18.0 2459690.472131 13.658 0.018 14.369 14.706 15.118 15.699 1.4 B na 18.35 120.0 1 18.0 2459690.473444 13.176 0.012 13.490 13.841 14.211 14.536 1.4 R na 17.44 90.0 1 17.7 2459690.474558 13.321 0.021 13.177 13.492 13.876 14.204 1.4 I na 17.53 90.0 1 17.1 2459690.475703 13.467 0.014 13.822 14.188 14.551 15.017 1.4 V na 17.71 90.0 1 17.8 2459690.476990 13.695 0.018 14.369 14.752 15.158 15.724 1.4 B na 18.34 120.0 1 18.0 2459690.478301 13.190 0.013 13.490 13.819 14.240 14.567 1.4 R na 17.50 90.0 1 17.6 2459690.479426 13.322 0.020 13.177 13.495 13.834 14.151 1.4 I na 17.55 90.0 1 17.1 2459690.480576 13.480 0.013 13.822 14.196 14.602 14.982 1.4 V na 17.71 90.0 1 17.9 2459690.481875 13.639 0.019 14.369 14.704 15.084 15.689 1.4 B na 18.31 120.0 1 17.9 2459690.483186 13.198 0.012 13.490 13.852 14.221 14.568 1.5 R na 17.47 90.0 1 17.7 2459690.484313 13.323 0.022 13.177 13.496 13.911 14.151 1.5 I na 17.59 90.0 1 17.0 2459690.486740 13.656 0.023 14.369 14.684 15.114 15.631 1.5 B na 18.40 120.0 1 17.6 2459690.488054 13.167 0.011 13.490 13.878 14.219 14.530 1.5 R na 17.43 90.0 1 17.8 2459690.489168 13.297 0.020 13.177 13.497 13.851 14.132 1.5 I na 17.54 90.0 1 17.1 2459690.490321 13.482 0.012 13.822 14.238 14.583 14.940 1.5 V na 17.71 90.0 1 18.1 2459690.491609 13.644 0.021 14.369 14.706 15.136 15.717 1.5 B na 18.36 120.0 1 17.8 2459690.494035 13.350 0.020 13.177 13.559 13.864 14.161 1.5 I na 17.54 90.0 1 17.1 2459690.495186 13.468 0.013 13.822 14.178 14.603 14.956 1.5 V na 17.69 90.0 1 17.9 2459690.496475 13.684 0.018 14.369 14.694 15.137 15.671 1.5 B na 18.36 120.0 1 18.0 2459690.497788 13.171 0.012 13.490 13.853 14.197 14.514 1.5 R na 17.44 90.0 1 17.7 2459690.498914 13.332 0.019 13.177 13.520 13.900 14.192 1.5 I na 17.54 90.0 1 17.2 2459690.503927 13.460 0.015 13.822 14.200 14.540 14.922 1.5 V na 17.71 90.0 1 17.7 2459690.505226 13.641 0.020 14.369 14.748 15.105 15.710 1.5 B na 18.36 120.0 1 17.8 2459690.506536 13.147 0.013 13.490 13.858 14.254 14.537 1.5 R na 17.43 90.0 1 17.5 2459690.507662 13.327 0.021 13.177 13.547 13.878 14.217 1.6 I na 17.49 90.0 1 17.1 2459690.508812 13.463 0.016 13.822 14.147 14.553 15.023 1.6 V na 17.70 90.0 1 17.6 2459690.510112 13.641 0.024 14.369 14.702 15.229 15.577 1.6 B na 18.33 120.0 1 17.6 2459690.511436 13.178 0.011 13.490 13.865 14.199 14.575 1.6 R na 17.36 90.0 1 17.8 2459690.512562 13.313 0.022 13.177 13.459 13.798 14.148 1.6 I na 17.51 90.0 1 16.9 2459690.513724 13.504 0.015 13.822 14.200 14.578 14.963 1.6 V na 17.71 90.0 1 17.7 2459690.515024 13.657 0.024 14.369 14.770 15.175 15.716 1.6 B na 18.33 120.0 1 17.6 2459690.516335 13.143 0.014 13.490 13.835 14.218 14.542 1.6 R na 17.41 90.0 1 17.4 2459690.517461 13.330 0.032 13.177 13.471 13.919 14.185 1.6 I na 17.59 90.0 1 16.5 2459690.518610 13.484 0.017 13.822 14.222 14.600 14.943 1.6 V na 17.72 90.0 1 17.5 2459690.519909 13.617 0.023 14.369 14.684 15.060 15.704 1.6 B na 18.28 120.0 1 17.6 2459690.521215 13.177 0.013 13.490 13.860 14.203 14.565 1.6 R na 17.38 90.0 1 17.6 2459690.522340 13.336 0.024 13.177 13.509 13.913 14.159 1.6 I na 17.52 90.0 1 16.8 2459690.523480 13.473 0.018 13.822 14.241 14.607 15.015 1.6 V na 17.70 90.0 1 17.4 2459690.524769 13.626 0.026 14.369 14.695 15.167 15.755 1.6 B na 18.30 120.0 1 17.5 2459690.526082 13.162 0.013 13.490 13.862 14.234 14.594 1.7 R na 17.38 90.0 1 17.6 2459690.527197 13.341 0.025 13.177 13.528 13.933 14.118 1.7 I na 17.55 90.0 1 16.8 2459690.528345 13.433 0.017 13.822 14.146 14.505 14.963 1.7 V na 17.61 90.0 1 17.5 2459690.529645 13.624 0.022 14.369 14.708 15.104 15.693 1.7 B na 18.24 120.0 1 17.7 2459690.530944 13.128 0.015 13.490 13.840 14.211 14.505 1.7 R na 17.33 90.0 1 17.4 2459690.532070 13.292 0.027 13.177 13.489 13.862 14.157 1.7 I na 17.49 90.0 1 16.7 2459690.533218 13.495 0.018 13.822 14.212 14.590 14.983 1.7 V na 17.67 90.0 1 17.5 2459690.534520 13.672 0.023 14.369 14.733 15.194 15.648 1.7 B na 18.23 120.0 1 17.6 2459690.535832 13.152 0.015 13.490 13.852 14.179 14.600 1.7 R na 17.32 90.0 1 17.4 2459690.536968 13.343 0.023 13.177 13.540 13.911 14.174 1.7 I na 17.49 90.0 1 16.9 2459690.538127 13.467 0.018 13.822 14.226 14.563 14.954 1.7 V na 17.62 90.0 1 17.4 2459690.539429 13.635 0.024 14.369 14.668 15.271 15.687 1.8 B na 18.17 120.0 1 17.6 2459690.540739 13.163 0.013 13.490 13.858 14.195 14.532 1.8 R na 17.30 90.0 1 17.6 2459690.541854 13.317 0.023 13.177 13.510 13.883 14.105 1.8 I na 17.45 90.0 1 16.9 2459690.545247 13.467 0.015 13.822 14.182 14.522 14.935 1.8 V na 17.52 90.0 1 17.7 2459690.546535 13.632 0.022 14.369 14.687 15.130 15.592 1.8 B na 18.09 120.0 1 17.7 2459690.547846 13.160 0.013 13.490 13.854 14.200 14.573 1.8 R na 17.22 90.0 1 17.6 2459690.550121 13.477 0.015 13.822 14.201 14.567 14.933 1.9 V na 17.49 90.0 1 17.8 2459690.551409 13.648 0.020 14.369 14.648 15.131 15.688 1.9 B na 18.02 120.0 1 17.8 2459690.552723 13.163 0.013 13.490 13.844 14.241 14.579 1.9 R na 17.22 90.0 1 17.6 2459690.556278 13.672 0.021 14.369 14.650 15.188 15.648 1.9 B na 17.98 120.0 1 17.8 2459690.557592 13.144 0.013 13.490 13.835 14.173 14.599 1.9 R na 17.18 90.0 1 17.6 2459690.558717 13.328 0.021 13.177 13.510 13.872 14.227 1.9 I na 17.38 90.0 1 17.1 2459690.559865 13.459 0.015 13.822 14.156 14.525 15.026 2.0 V na 17.42 90.0 1 17.8 2459690.561165 13.645 0.024 14.369 14.659 15.169 15.763 2.0 B na 17.97 120.0 1 17.6 2459690.562464 13.167 0.013 13.490 13.883 14.229 14.573 2.0 R na 17.17 90.0 1 17.7 2459690.563590 13.302 0.023 13.177 13.499 13.892 14.190 2.0 I na 17.34 90.0 1 16.8 2459690.564741 13.457 0.016 13.822 14.157 14.533 14.917 2.0 V na 17.36 90.0 1 17.6 2459690.566030 13.650 0.023 14.369 14.619 15.147 15.724 2.0 B na 17.87 120.0 1 17.7 2459690.567344 13.147 0.014 13.490 13.829 14.216 14.565 2.0 R na 17.11 90.0 1 17.5 2459690.568469 13.315 0.031 13.177 13.480 13.938 14.212 2.1 I na 17.40 90.0 1 16.6 2459690.569618 13.449 0.016 13.822 14.169 14.542 14.964 2.1 V na 17.31 90.0 1 17.6 2459690.570907 13.664 0.025 14.369 14.611 15.092 15.626 2.1 B na 17.79 120.0 1 17.5 2459690.572220 13.150 0.014 13.490 13.867 14.194 14.579 2.1 R na 17.07 90.0 1 17.5 2459690.573346 13.288 0.028 13.177 13.515 13.871 14.166 2.1 I na 17.25 90.0 1 16.6 2459690.574496 13.473 0.017 13.822 14.131 14.561 14.949 2.1 V na 17.26 90.0 1 17.6 2459690.575784 13.642 0.026 14.369 14.592 15.072 15.651 2.2 B na 17.65 120.0 1 17.5 2459690.577098 13.128 0.016 13.490 13.822 14.206 14.588 2.2 R na 16.96 90.0 1 17.3 2459690.578226 13.301 0.026 13.177 13.517 13.875 14.145 2.2 I na 17.05 90.0 1 16.7 2459690.579379 13.437 0.019 13.822 14.166 14.550 15.039 2.2 V na 17.16 90.0 1 17.5 2459690.580678 13.741 0.030 14.369 14.687 15.216 15.575 2.2 B na 17.68 120.0 1 17.3 2459690.581990 13.173 0.016 13.490 13.874 14.227 14.568 2.2 R na 16.89 90.0 1 17.3 2459690.583116 13.281 0.034 13.177 13.443 13.825 14.169 2.3 I na 16.96 90.0 1 16.3