MASTER Net MASTER Database: GRB241228.16 pagePlease use the reference to MASTER DataBase as Lipunov et al., 2010, MASTER Robotic Net, Advances in Astronomy, vol. 2010, p.30L |
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| MASTER observatories and transients from them in error-field |
You are viewing outdated information, relevant error box is here
All alerts for this trigger
id noticetime coord2000 satel errorbox type trigger seq trig_type links
2724465
2024-12-28 04:22:48.579076
22h 59m 12.42s +18d 36m 36.2s
ANTARES
0.000527778
1277277
2731343
2025-01-02 10:42:15.443644
22h 59m 07.27s +18d 37m 30.7s
SWIFT
0
pointdir
1277277
891
83
pointdir
2724423
2024-12-28 04:11:25.207711
22h 59m 12.48s +18d 36m 36.0s
SWIFT
0.0005
alert
1277277
2
67
alert
2724382
2024-12-28 03:57:56.982525
22h 59m 17.76s +18d 36m 14.4s
SWIFT
0.05
alert
1277277
1
61
alert
MASTER optical transients in this field
Will be published in GCN, ATEL
Distance | datetime | coord2000 | observatory | camera | links |
trigger | notice | notice+1hr | now |
2024-12-28 03:57:15 (JD 2460672.664757) Siderial time 12.936686 h Ra 22:59:17.76 Dec 18:36:14.40 Rise 2024-12-28 08:56:34 Transit 2024-12-28 16:58:42 Set 2024-12-29 01:00:48 AmurObject: Altitude: 32.67 Azimuth: 280.33 Sun: Altitude: 16.15 Azimuth: 6.48 Moon: Altitude: 5.37 Azimuth: 38.25 TunkaObject: Altitude: 17.37 Azimuth: 261.77 Sun: Altitude: 13.33 Azimuth: 343.37 Moon: Altitude: 11.20 Azimuth: 17.06 KislovodskObject: Altitude: -20.25 Azimuth: 214.53 Sun: Altitude: -7.90 Azimuth: 294.81 Moon: Altitude: 10.96 Azimuth: 321.97 TavridaObject: Altitude: -22.49 Azimuth: 206.34 Sun: Altitude: -13.92 Azimuth: 289.13 Moon: Altitude: 6.20 Azimuth: 315.44 SAAOObject: Altitude: -72.27 Azimuth: 317.99 Sun: Altitude: 4.49 Azimuth: 294.82 Moon: Altitude: 34.55 Azimuth: 280.22 IACObject: Altitude: -37.28 Azimuth: 149.90 Sun: Altitude: -51.35 Azimuth: 272.61 Moon: Altitude: -20.77 Azimuth: 288.34 ArgentinaObject: Altitude: -19.84 Azimuth: 100.10 Sun: Altitude: -34.08 Azimuth: 11.15 Moon: Altitude: -27.68 Azimuth: 333.24 MexicoObject: Altitude: 33.74 Azimuth: 92.62 Sun: Altitude: -44.28 Azimuth: 86.71 Moon: Altitude: -75.68 Azimuth: 110.04 UralObject: Altitude: -3.20 Azimuth: 227.67 Sun: Altitude: -5.20 Azimuth: 306.10 Moon: Altitude: 5.03 Azimuth: 337.47 VostryakovoObject: Altitude: -11.91 Azimuth: 208.41 Sun: Altitude: -15.12 Azimuth: 289.23 Moon: Altitude: 0.04 Azimuth: 318.85 Gal. latitude: -36.872589 Gal. longitude: 89.928366 Dist. to Sun: 78.200016 Dist. to Moon: 109.994328 Moon coord.: (240.938353 d, -25.288094 d) Sun coord.: (277.142870 d, -23.284139 d) Lunar disk: 0.080847 Lunar phase: 146.961678 Lunar bright limb: 94.490757 No SN in this field |
2024-12-28 03:57:47 (JD 2460672.665127) Siderial time 12.945599 h Ra 22:59:17.76 Dec 18:36:14.40 Rise 2024-12-28 08:56:34 Transit 2024-12-28 16:58:42 Set 2024-12-29 01:00:48 AmurObject: Altitude: 32.75 Azimuth: 280.44 Sun: Altitude: 16.14 Azimuth: 6.60 Moon: Altitude: 5.32 Azimuth: 38.35 TunkaObject: Altitude: 17.45 Azimuth: 261.88 Sun: Altitude: 13.35 Azimuth: 343.50 Moon: Altitude: 11.17 Azimuth: 17.18 KislovodskObject: Altitude: -20.20 Azimuth: 214.65 Sun: Altitude: -7.82 Azimuth: 294.89 Moon: Altitude: 11.02 Azimuth: 322.08 TavridaObject: Altitude: -22.45 Azimuth: 206.46 Sun: Altitude: -13.83 Azimuth: 289.22 Moon: Altitude: 6.27 Azimuth: 315.54 SAAOObject: Altitude: -72.19 Azimuth: 317.65 Sun: Altitude: 4.59 Azimuth: 294.75 Moon: Altitude: 34.66 Azimuth: 280.17 IACObject: Altitude: -37.33 Azimuth: 150.04 Sun: Altitude: -51.24 Azimuth: 272.66 Moon: Altitude: -20.66 Azimuth: 288.39 ArgentinaObject: Altitude: -19.96 Azimuth: 100.03 Sun: Altitude: -34.10 Azimuth: 11.00 Moon: Altitude: -27.63 Azimuth: 333.12 MexicoObject: Altitude: 33.63 Azimuth: 92.68 Sun: Altitude: -44.39 Azimuth: 86.77 Moon: Altitude: -75.78 Azimuth: 110.26 UralObject: Altitude: -3.15 Azimuth: 227.78 Sun: Altitude: -5.14 Azimuth: 306.20 Moon: Altitude: 5.05 Azimuth: 337.59 VostryakovoObject: Altitude: -11.88 Azimuth: 208.53 Sun: Altitude: -15.05 Azimuth: 289.33 Moon: Altitude: 0.09 Azimuth: 318.96 Gal. latitude: -36.872589 Gal. longitude: 89.928366 Dist. to Sun: 78.199669 Dist. to Moon: 109.990173 Moon coord.: (240.943293 d, -25.289166 d) Sun coord.: (277.143281 d, -23.284120 d) Lunar disk: 0.080827 Lunar phase: 146.965848 Lunar bright limb: 94.487649 No SN in this field |
2024-12-28 04:57:47 (JD 2460672.706794) Siderial time 13.948337 h Ra 22:59:17.76 Dec 18:36:14.40 Rise 2024-12-28 08:56:34 Transit 2024-12-28 16:58:42 Set 2024-12-29 01:00:48 AmurObject: Altitude: 41.91 Azimuth: 294.23 Sun: Altitude: 13.89 Azimuth: 20.67 Moon: Altitude: -1.21 Azimuth: 49.71 TunkaObject: Altitude: 26.72 Azimuth: 273.57 Sun: Altitude: 14.88 Azimuth: 357.61 Moon: Altitude: 7.48 Azimuth: 29.90 KislovodskObject: Altitude: -13.05 Azimuth: 227.53 Sun: Altitude: 1.57 Azimuth: 305.00 Moon: Altitude: 16.43 Azimuth: 334.35 TavridaObject: Altitude: -16.57 Azimuth: 220.25 Sun: Altitude: -4.12 Azimuth: 299.11 Moon: Altitude: 12.59 Azimuth: 327.15 SAAOObject: Altitude: -61.67 Azimuth: 292.34 Sun: Altitude: 16.40 Azimuth: 287.53 Moon: Altitude: 46.84 Azimuth: 273.82 IACObject: Altitude: -42.16 Azimuth: 167.52 Sun: Altitude: -38.10 Azimuth: 278.52 Moon: Altitude: -8.83 Azimuth: 294.17 ArgentinaObject: Altitude: -32.65 Azimuth: 92.78 Sun: Altitude: -34.70 Azimuth: 354.31 Moon: Altitude: -20.80 Azimuth: 320.87 MexicoObject: Altitude: 20.82 Azimuth: 99.75 Sun: Altitude: -57.22 Azimuth: 94.75 Moon: Altitude: -84.35 Azimuth: 177.45 UralObject: Altitude: 3.47 Azimuth: 240.41 Sun: Altitude: 0.88 Azimuth: 318.60 Moon: Altitude: 7.09 Azimuth: 350.59 VostryakovoObject: Altitude: -6.94 Azimuth: 222.09 Sun: Altitude: -7.35 Azimuth: 300.98 Moon: Altitude: 4.69 Azimuth: 331.22 Gal. latitude: -36.872589 Gal. longitude: 89.928366 Dist. to Sun: 78.160731 Dist. to Moon: 109.522374 Moon coord.: (241.499847 d, -25.408670 d) Sun coord.: (277.189472 d, -23.282010 d) Lunar disk: 0.078609 Lunar phase: 147.435093 Lunar bright limb: 94.135377 No SN in this field |
2025-04-16 06:41:15 (JD 2460781.778646) Siderial time 22.839874 h Ra 22:59:17.76 Dec 18:36:14.40 Rise 2025-04-17 01:44:05 Transit 2025-04-16 09:50:08 Set 2025-04-16 17:52:14 AmurObject: Altitude: 15.69 Azimuth: 100.39 Sun: Altitude: 33.66 Azimuth: 61.82 Moon: Altitude: -62.59 Azimuth: 208.33 TunkaObject: Altitude: 30.98 Azimuth: 80.71 Sun: Altitude: 44.03 Azimuth: 33.50 Moon: Altitude: -62.14 Azimuth: 159.41 KislovodskObject: Altitude: 64.76 Azimuth: 5.96 Sun: Altitude: 43.71 Azimuth: 305.37 Moon: Altitude: -30.43 Azimuth: 83.16 TavridaObject: Altitude: 63.42 Azimuth: 347.58 Sun: Altitude: 38.00 Azimuth: 297.41 Moon: Altitude: -24.57 Azimuth: 78.23 SAAOObject: Altitude: 35.86 Azimuth: 202.42 Sun: Altitude: 19.91 Azimuth: 243.21 Moon: Altitude: 15.27 Azimuth: 69.65 IACObject: Altitude: 37.85 Azimuth: 267.68 Sun: Altitude: -0.26 Azimuth: 258.36 Moon: Altitude: 18.15 Azimuth: 46.86 ArgentinaObject: Altitude: -25.63 Azimuth: 263.18 Sun: Altitude: -53.79 Azimuth: 299.82 Moon: Altitude: 82.86 Azimuth: 201.22 MexicoObject: Altitude: -32.70 Azimuth: 214.00 Sun: Altitude: -47.80 Azimuth: 165.73 Moon: Altitude: 19.87 Azimuth: 318.11 UralObject: Altitude: 48.87 Azimuth: 29.05 Sun: Altitude: 40.65 Azimuth: 333.99 Moon: Altitude: -40.23 Azimuth: 106.42 VostryakovoObject: Altitude: 53.19 Azimuth: 356.78 Sun: Altitude: 34.29 Azimuth: 307.87 Moon: Altitude: -28.44 Azimuth: 86.27 Gal. latitude: -36.872589 Gal. longitude: 89.928366 Dist. to Sun: 39.064228 Dist. to Moon: 112.122226 Moon coord.: (238.501018 d, -25.113295 d) Sun coord.: (24.277068 d, 10.111208 d) Lunar disk: 0.906203 Lunar phase: 35.668244 Lunar bright limb: 108.601825 No SN in this field |
####################################################################################### ####################################################################################### ID = 11859 TYPE = 35 DAYS = 1 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 17.7 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | 53565 | MASTER-SAAO | C | 180 | 16.4 | 53764 | MASTER-SAAO | C | 180 | 16.5 | 53964 | MASTER-SAAO | C | 180 | 16.6 | 54163 | MASTER-SAAO | C | 180 | 16.7 | 54364 | MASTER-SAAO | C | 180 | 16.5 | 54563 | MASTER-SAAO | C | 180 | 16.6 | 54763 | MASTER-SAAO | C | 180 | 16.5 | 54962 | MASTER-SAAO | C | 180 | 16.4 | 55161 | MASTER-SAAO | C | 180 | 16.6 | 55560 | MASTER-SAAO | C | 180 | 16.5 | 55700 | MASTER-SAAO | C | 60 | 17.2 | 56663 | MASTER-SAAO | C | 180 | 17.7 | 56862 | MASTER-SAAO | C | 180 | 17.7 | 58083 | MASTER-SAAO | C | 180 | 14.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11853 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 16.7 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | 53565 | MASTER-SAAO | C | 180 | 16.4 | 53764 | MASTER-SAAO | C | 180 | 16.5 | 53964 | MASTER-SAAO | C | 180 | 16.6 | 54163 | MASTER-SAAO | C | 180 | 16.7 | 54364 | MASTER-SAAO | C | 180 | 16.5 | 54563 | MASTER-SAAO | C | 180 | 16.6 | 54763 | MASTER-SAAO | C | 180 | 16.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11852 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 16.7 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | 53565 | MASTER-SAAO | C | 180 | 16.4 | 53764 | MASTER-SAAO | C | 180 | 16.5 | 53964 | MASTER-SAAO | C | 180 | 16.6 | 54163 | MASTER-SAAO | C | 180 | 16.7 | 54364 | MASTER-SAAO | C | 180 | 16.5 | 54563 | MASTER-SAAO | C | 180 | 16.6 | 54763 | MASTER-SAAO | C | 180 | 16.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11851 TYPE = 34 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 16.7 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | 53565 | MASTER-SAAO | C | 180 | 16.4 | 53764 | MASTER-SAAO | C | 180 | 16.5 | 53964 | MASTER-SAAO | C | 180 | 16.6 | 54163 | MASTER-SAAO | C | 180 | 16.7 | 54364 | MASTER-SAAO | C | 180 | 16.5 | 54563 | MASTER-SAAO | C | 180 | 16.6 | 54763 | MASTER-SAAO | C | 180 | 16.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11850 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11849 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11848 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11847 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11846 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11845 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11844 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 11843 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 241228A ( V. D'Elia et al., GCN 38681) errorbox 53242 sec after notice time and 53275 sec after trigger time at 2024-12-28 18:45:10 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 72 deg. The sun altitude is -11.2 deg. The galactic latitude b = -37 deg., longitude l = 90 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2724378 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 53366 | MASTER-SAAO | C | 180 | 12.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
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