January 2026 - vsnet-grb-info - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-grb-info 41659] GRB 260127A: INASAN-Kislovodsk, SAO RAS, and Terskol K-800 optical observations
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43557 SUBJECT: GRB 260127A: INASAN-Kislovodsk, SAO RAS, and Terskol K-800 optical observations DATE: 26/01/29 15:04:48 GMT FROM: Alina Volnova at IKI RAS <alinusss(a)gmail.com> A. Volnova (IKI), A. Moskvitin (SAO RAS), N. Pankov (IKI), A. Tarasenkov (INASAN), I. Sokolov (INASAN, KIAM), A. Pozanenko (IKI) report on behalf of IKI-GRB-FuN collaboration: We observed the field of the Swift/Fermi/GBM GRB 260127A (Fermi GBM Team, GCN Circ. 43528; Klingler et al., GCN Circ. 43529; Osborne et al., GCN 43535; D'Ai et al, GCN 43539; Trigg, GCN 43546) in R-band with the RC500 telescope of the INASAN-Kislovodsk observatory starting on 2026-01-27 (UT) 23:20:50, in Rc-band with the Zeiss-1000 of the SAO RAS starting on 2026-01-28 (UT) 01:01:40, and in clear light with the 0.8-meter K-800 telescope of the Terskol observatory of INASAN 2026-01-28 (UT) 01:46:18. The optical counterpart reported previously (Saccardi & Malesani, GCN 43530; Lipunov et al., GCNs 43531, 43548; Wu et al., GCN 43537; Hagio et al., GCN 43540; Malesani et al, GCN 43543; Magnani et al., GCN 43544) is clearly detected in the stacked frame of the Zeiss-1000 and is not detected in the stacked frames of the RC500 and K-800 telescopes. Preliminary photometry and observational details are the following: Date UT start t-T0 Exp. Filter Obj. Err. UL Site/Telescope (mid,days) (n*s) (3sigma) 2026-01-27 23:20:50 0.30822 110*120 R n/d n/d 21.9 INASAN-Kislovodsk/RC500 2026-01-28 01:01:40 0.32599 15*300 Rc 22.00 0.22 22.7 SAO RAS/Zeiss-1000 2026-01-28 01:46:18 0.35748 94*30 Clear n/d n/d 21.2 Terskol/K800 The photometry is based on several nearby stars from the USNO-B1 catalogue (R2 magnitudes) and is not corrected for the Galactic extinction. We would like to thank the SAO RAS engineering team: Afanasieva I. V., Pritychenko M. A., Egorov V. A., Shaldyrvan I. V. for their excellent support. View this GCN Circular online at https://gcn.nasa.gov/circulars/43557. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41658] GRB 260128A / EP260128a: Fermi-GBM Sub-Threshold Detection
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43556 SUBJECT: GRB 260128A / EP260128a: Fermi-GBM Sub-Threshold Detection DATE: 26/01/29 14:50:07 GMT FROM: mariaedvige.ravasio(a)ru.nl M. E. Ravasio (ICE-CSIC and Radboud Univ.), P.G. Jonker (Radboud Univ.) and E. Burns (LSU), C. Malacaria (INAF-OAR) report on behalf of the Fermi-GBM Team: Fermi-GBM had full spatial and temporal coverage of the transient EP260128a detected by EP-WXT (H. Zhou et al., GCN 43549; H. Zhou et al., GCN 43554). There was no Fermi-GBM onboard trigger around the refined EP starting time at T0 = 2026-01-28T23:38:19 UTC (H. Zhou et al., GCN 43554). The GBM Targeted Search [1], the most sensitive, coherent search for GRB-like signals, was run in the time interval [-50;+500] s from T0, seeking signals between 64 ms and 32.768 s in duration. A transient was found, with the most significant signal at T0+145 s on a 16 s timescale, with a false alarm rate of 1.1e-05 Hz, although there is significant evidence of an earlier start of the emission. The light curve is multi-peaked, and a significant signal is also found at T0+70 s with FAR of 6.5e-05 Hz. The localisation is consistent with the EP one, with a spatial association probability of 99.3%. Among the three spectral templates tested, the transient was best-fit with a “normal” spectral template (Band function with Epeak = 230 keV, alpha = -1.0, beta = -2.3) for a GRB. [1] Goldstein et al. 2019 arXiv:1903.12597 View this GCN Circular online at https://gcn.nasa.gov/circulars/43556. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41657] EP260128a: NOT optical counterpart candidate
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43555 SUBJECT: EP260128a: NOT optical counterpart candidate DATE: 26/01/29 11:54:22 GMT FROM: L. B. He at NAOC <helb(a)bao.ac.cn> L.B. He, J. An, X. Liu, S.Q. Jiang, Z.P. Zhu, D. Xu (NAOC), S.Y. Fu (HUST), J.P.U. Fynbo (DAWN/NBI), N. Pyykkinen (NOT) report on behalf of a large collaboration: We observed the field of EP260128a (Zhou et al., GCN 43549) using the 2.56-m Nordic Optical Telescope (NOT) equipped with the ALFOSC camera. Observations started at 00:13:10 UT on 2026-01-29, i.e., 33.18 minutes after the EP trigger, and we obtained 9 x 90 s frames in the Sloan r-band and 9 x 100 s frames in the Sloan z- band. The stacked r- and z- band images have 3-sigma depth of r ~ 24.1 and z ~ 23.5, calibrated with nearby Pan-STARRS1 DR2 stars and not corrected for Galactic extinction. A new optical source is detected in the stacked z-band image within the EP/FXT error circle (Zhou et al., GCN 43554) at coordinates RA = 08:33:18.08 (128.32533) DEC = -10:16:32.3 (-10.27565) to ~ 4.2-sigma and we measured z = 23.07 +/- 0.26 (AB) at 1.004 hrs post-trigger. This source is not present in the z-band Legacy Survey DR11 early image v2, which is a bit deeper than the z-band NOT image. This source is also not present in the stacked r-band NOT image, as well as the r-band Legacy Survey image that is deeper than the NOT image. Considering the r-band non-detection and the z-band (weak) detection for the NOT candidate, EP260128a might be a high-redshift (i.e., z > ~5) event. We also note that the counterpart candidate by Liverpool Telescope (Eyles-Ferris et al., GCN 43553) is not present in neither r-band nor z-band stacked NOT image. Further optical and near-infrared follow-ups are encouraged. View this GCN Circular online at https://gcn.nasa.gov/circulars/43555. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41656] EP260128a: refined analysis of the EP-WXT and autonomous EP-FXT observations
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43554 SUBJECT: EP260128a: refined analysis of the EP-WXT and autonomous EP-FXT observations DATE: 26/01/29 10:01:54 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> H. Zhou (PMO, CAS), T. Wu, H.-C. Ding (AHNU), Z.-X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: The fast X-ray transient EP260128a was detected by the Wide-field X-ray Telescope (WXT) on board the Einstein Probe (EP) mission (Zhou et al., GCN 43549). The refined analysis of the WXT data shows that the event started at T0=2026-01-28T 23:38:19(UTC), and lasted for approximately 100 seconds, after which the WXT light curve was interrupted due to the autonomous follow-up observation. The average WXT 0.5-4 keV spectrum can be fitted with an absorbed power law with a fixed Galactic hydrogen column density of 5.84×10^20 cm^-2 and a photon index of 0.05 +/- 0.73. The derived average unabsorbed 0.5-4 keV flux is 6.98(-4.40/+11.93)×10^(-9) erg/s/cm^2. The Follow-up X-ray Telescope (FXT) on board EP observed this source autonomously at 2026-01-28T23:43:01(UTC, T0+282 s). The exposure time of this observation is 2102s. On-ground analysis of the FXT data found an uncatalogued source at R.A. = 128.3253, DEC = -10.2750 (J2000) with an uncertainty of about 10 arcsec (radius, 90% C.L. statistical and systematic), which is consistent with the WXT position. The average 0.5-10 keV spectrum can be fitted with an absorbed power law with a fixed Galactic hydrogen column density of 5.84×10^20 cm^-2 and a photon index of 1.99 +/-0.06. The derived average unabsorbed 0.5-10 keV flux is (2.76 +/- 0.15)×10^(-11) erg/s/cm^2. The best-fitted FXT spectra show no additional absorption is required. Further FXT follow-up observations have been arranged. Although a faint counterpart of EP260128a has been reported (Lipunov et al., GCN 43550; Quirola-Vasquez et al., GCN 43552; Eyles-Ferris et al., GCN 43553), further multi-band follow-up observations are encouraged to explore the nature of EP260128a. Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics). View this GCN Circular online at https://gcn.nasa.gov/circulars/43554. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41655] EP260128a: Liverpool Telescope optical observations and possible counterpart
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43553 SUBJECT: EP260128a: Liverpool Telescope optical observations and possible counterpart DATE: 26/01/29 09:33:37 GMT FROM: Rob Eyles-Ferris at U of Leicester <raje1(a)leicester.ac.uk> R. A. J. Eyles-Ferris and R. L. C. Starling (Leicester) report on behalf of a larger collaboration: We observed the field of EP260128a (Zhou et al., GCN 43549) with the 2m Liverpool Telescope on La Palma using the IO:O instrument. We obtained 6x150s exposures in each of the SDSS r’ and SDSS g’ filters starting at 2026-01-28 23:56:39 UT, approximately 16.6 minutes after the X-ray detection. We performed image subtraction on the stacked images using reference images from Pan-STARRS and Legacy DR11 and also compared the stacked and reference images manually. In the r’ stack and within the EP/FXT localisation, we tentatively identify a low significance source at a position RA 08:33:18.17 (128.32569 deg) Dec -10:16:19.3 (-10.27202 deg) The source is detected to ~2.6-sigma and we measure r’ = 22.92 +/- 0.38. The source is not visible in the g’ stack (started ~18 minutes later). We derive 3-sigma upper limits for our stacked images of r’ > 22.8 and g’ > 22.5 with AB photometry calibrated to Pan-STARRS and not corrected for Galactic extinction. View this GCN Circular online at https://gcn.nasa.gov/circulars/43553. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41654] EP260128a: LCO optical upper limits
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43552 SUBJECT: EP260128a: LCO optical upper limits DATE: 26/01/29 07:47:19 GMT FROM: Jonathan Quirola at Radboud University <jaquirola1990(a)gmail.com> J. A. Quirola-Vasquez (Radboud), J. N. D. van Dalen (Radboud), J. Chacón(PUC), A. Martin-Carrillo (UCD), P. G. Jonker (Radboud), A. J. Levan (Radboud), D. B. Malesani (DAWN/NBI and Radboud), and F. E. Bauer (SSI and UTA) report on behalf of a larger collaboration: We observed the field of the fast X-ray transient EP260128a (Zhou et al., GCN 43549) using an LCO 1m telescope located at the Cerro Tololo Inter-American Observatory (Chile) equipped with the SINISTRO instrument. A series of 6x300 s exposures was taken in each of the SDSS-r filter, starting on 2026-01-29 at 02:05:48 UT (2.43 hr after the trigger). No new source is detected within or at the border of the EP/FXT uncertainty region (Zhou et al., GCN 43549) compared to Legacy DR11. From the stacked images, we obtain the following 3-sigma upper limits:  r > 22.5 These upper limits are in AB magnitudes, calibrated using nearby stars from the Pan-STARRS catalog, and are not corrected for Galactic extinction. View this GCN Circular online at https://gcn.nasa.gov/circulars/43552. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41653] EP260126a: SVOM/VT optical upperlimit
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43551 SUBJECT: EP260126a: SVOM/VT optical upperlimit DATE: 26/01/29 07:03:18 GMT FROM: Huali Li at at NAOC, SVOM <lhl(a)nao.cas.cn> H. L. Li, L. P. Xin, Y. L. Qiu, C. Wu, Y. N. Ma, Z. H. Yao, X. H. Han, Y. Xu, J. Wang, P. P. Zhang, W. J. Xie, Y. J. Xiao, H. B. Cai, L. Lan, J. R. Xu, J. S. Deng, J. Y. Wei (NAOC), J. Palmerio (CEA) report on behalf of the SVOM/VT team. SVOM/VT performed ToO osbervation on EP260126a (Fu et al., GCN 43520). The observation started on 2026-01-26T16:14:40 UT (i.e. 11.837 hour after trigger) in VT_B (400nm-650nm) and VT_R (650nm-1000nm) channel simultaneously. No uncatalogued sources are detected in single or stacked images within error box of EP-FXT (Fu et al., GCN 43520). The 3 sigma limit magnitudes are derived as below: Mid time | Band | Exposure Time | 3 sigma limit magnitude 13.907 hour VT_B 29*70 sec >23.4 mag 13.907 hour VT_R 29*70 sec >22.9 mag Our non-detection is consistent with earlier reports from other telescopes (Zhu et al., GCN 43521; Globus et al., GCN 43522; Eyles-Ferris et al., GCN 43523; Eyles-Ferris & Habeeb, GCN 43524; Lee et al., GCN 43525; Taguchi et al., GCN 43541). The Space Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA, China), National Center for Space Studies (CNES, France) and the Chinese Academy of Sciences (CAS, China), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. VT was jointly developed by Xi'an Institute of Optics and Precision Mechanics (XIOPM), CAS and National astronomical observatories (NAOC), CAS. View this GCN Circular online at https://gcn.nasa.gov/circulars/43551. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41652] EP260128a: Global MASTER-Net observations report
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43550 SUBJECT: EP260128a: Global MASTER-Net observations report DATE: 26/01/29 06:54:20 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A.Sosnovskij (CrAO), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity), D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) MASTER-OAFA robotic telescope [1] located in Argentina (OAFA observatory of San Juan National University) was pointed to the EP260128a ( EP Team et al., GCN 43549) errorbox 9549 sec after notice time and 17258 sec after trigger time at 2026-01-29 04:27:37 UT, with upper limit up to 19.9 mag. The observations began at zenith distance = 21 deg. The sun altitude is -40.7 deg. The galactic latitude b = 18 deg., longitude l = 235 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=3117956 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 17289 | 2026-01-29 04:27:37 | MASTER-OAFA | (08h 29m 07.40s , -10d 15m 51.1s) | C | 60 | 18.7 | 17364 | 2026-01-29 04:28:53 | MASTER-OAFA | (08h 29m 12.43s , -10d 16m 52.4s) | C | 60 | 13.8 | 25520 | 2026-01-29 06:44:48 | MASTER-OAFA | (08h 33m 35.30s , -09d 55m 35.4s) | C | 60 | 19.9 | 25597 | 2026-01-29 06:46:06 | MASTER-OAFA | (08h 33m 42.32s , -09d 56m 34.0s) | C | 60 | 19.9 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. [1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023, Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp. http : // www.pereplet.ru/lipunov/625.html View this GCN Circular online at https://gcn.nasa.gov/circulars/43550. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41651] EP260128a: Einstein Probe detection of an X-ray transient
by GCN Circulars 29 Jan '26

29 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43549 SUBJECT: EP260128a: Einstein Probe detection of an X-ray transient DATE: 26/01/29 01:47:47 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> H. Zhou (PMO, CAS), T. Wu, H.-C. Ding (AHNU), Z.-X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: We report on the detection of an X-ray transient by the Wide-field X-ray Telescope (WXT) on board the Einstein Probe (EP) mission, designated EP260128a. The transient triggered EP-WXT (ID: 01709253190) at 2026-01-28T23:39:59 (UTC). The WXT position of the source is R.A. = 128.303 deg, DEC = -10.281 deg (J2000) with an uncertainty of 3 arcmin in radius (90% C.L. statistical and systematic). A follow-up observation with the Follow-up X-ray Telescope (FXT) was performed automatically. Within the WXT error circle, an uncatalogued X-ray source was detected at R.A. = 128.3233 deg, DEC = -10.2767 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic). Further information will be updated when the telemetry data is received. Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics). View this GCN Circular online at https://gcn.nasa.gov/circulars/43549. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 41650] Fermi GRB 260127A: Global MASTER-Net observations report
by GCN Circulars 28 Jan '26

28 Jan '26

TITLE: GCN CIRCULAR NUMBER: 43548 SUBJECT: Fermi GRB 260127A: Global MASTER-Net observations report DATE: 26/01/28 23:15:22 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A.Sosnovskij (CrAO), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity), D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) MASTER-Kislovodsk robotic telescope [1] located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 260127A ( Fermi GBM team, GCN 43528) errorbox 1 days 15723 sec after notice time and 1 days 15745 sec after trigger time at 2026-01-28 22:13:32 UT, with upper limit up to 16.8 mag. The observations began at zenith distance = 80 deg. The sun altitude is -63.0 deg. The galactic latitude b = 45 deg., longitude l = 357 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=3117030 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 102175 | 2026-01-28 22:13:32 | MASTER-Kislovodsk | (14h 51m 08.24s , +02d 48m 33.2s) | C | 60 | 16.6 | 102578 | 2026-01-28 22:20:15 | MASTER-Kislovodsk | (15h 05m 19.35s , +04d 43m 03.8s) | C | 60 | 16.6 | 102789 | 2026-01-28 22:23:46 | MASTER-Kislovodsk | (15h 03m 14.11s , +02d 50m 18.9s) | C | 60 | 16.5 | 102901 | 2026-01-28 22:25:38 | MASTER-Kislovodsk | (14h 49m 55.15s , -00d 58m 21.9s) | C | 60 | 16.8 | 103234 | 2026-01-28 22:31:11 | MASTER-Kislovodsk | (15h 02m 06.17s , +00d 55m 55.7s) | C | 60 | 16.8 | 103454 | 2026-01-28 22:34:51 | MASTER-Kislovodsk | (14h 50m 37.84s , -02d 52m 07.1s) | C | 60 | 16.5 | 103569 | 2026-01-28 22:36:46 | MASTER-Kislovodsk | (15h 15m 11.23s , +02d 50m 27.3s) | C | 60 | 16.5 | 103928 | 2026-01-28 22:42:46 | MASTER-Kislovodsk | (15h 13m 59.01s , +00d 56m 55.7s) | C | 60 | 16.6 | 104040 | 2026-01-28 22:44:38 | MASTER-Kislovodsk | (14h 52m 27.85s , -04d 45m 35.0s) | C | 60 | 16.6 | 104156 | 2026-01-28 22:46:33 | MASTER-Kislovodsk | (15h 02m 42.73s , -02d 51m 50.3s) | C | 60 | 16.6 | 104268 | 2026-01-28 22:48:25 | MASTER-Kislovodsk | (15h 27m 17.10s , +02d 49m 26.6s) | C | 60 | 16.5 | 104390 | 2026-01-28 22:50:27 | MASTER-Kislovodsk | (15h 13m 49.40s , -00d 57m 33.9s) | C | 60 | 16.6 | 104620 | 2026-01-28 22:54:17 | MASTER-Kislovodsk | (15h 26m 00.01s , +00d 54m 54.2s) | C | 60 | 16.5 | 104726 | 2026-01-28 22:56:03 | MASTER-Kislovodsk | (15h 04m 25.84s , -04d 43m 38.4s) | C | 60 | 16.7 | 104959 | 2026-01-28 22:59:56 | MASTER-Kislovodsk | (14h 55m 16.13s , -06d 36m 58.7s) | C | 60 | 16.7 | 105183 | 2026-01-28 23:03:40 | MASTER-Kislovodsk | (15h 25m 53.63s , -00d 56m 48.2s) | C | 60 | 16.7 | 105413 | 2026-01-28 23:07:30 | MASTER-Kislovodsk | (15h 07m 22.73s , -06d 39m 00.3s) | C | 60 | 16.6 | 105526 | 2026-01-28 23:09:23 | MASTER-Kislovodsk | (15h 16m 34.84s , -04d 44m 35.6s) | C | 60 | 16.8 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. [1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023, Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp. http : // www.pereplet.ru/lipunov/625.html View this GCN Circular online at https://gcn.nasa.gov/circulars/43548. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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