MASTER Net MASTER Database: LIGO alert

Please 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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Name FERMI GRB230320.15
Type 2
Trigger time 2023-03-20 03:35:24.06
Notice time 2023-03-20 03:36:18.659467
Distance ± Mpc
BNS BHH NSBH Gap Terr
Galaxy in: 50%
90%
FULL

This work was supported by RFBR BRICS 17-52-80133 grant.
Kislovodsk Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Amur Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Tunka Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
OAFA Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
IAC Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
SAAO Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Tavrida Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
OAGH Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)

DAYS:
Coverage since triggertime up to

ALL PLOTS
datetime T - Trig [h] T - Not [h] Area [sq. deg]
Box 50% 90% FULL
[%] 13.9 13.9 17.6
2023-04-03 03:35:24 336.0 336.0 201.3

Map with WFC

Discoveries in this field
No discoveries yet!

Synchronous WFC images
datetime coord2000 observatory camera links
Errorbox center visibility at MASTER facilities
SELECT set_sphere_output('HMS'); select set_sphere_output_precision(1); select distinct on (gn) get_grb_name2 (grbtime, satel ) as gn, coord2000, satel, errorbox, 'now'::timestamp,'now'::timestamp+'1 hour'::interval,grbtime+'1 hour'::interval from grb where tabs(grbtime-'2023-03-20 03:35:24.06')<'10 minutes'::interval order by gn,seq desc,errorbox asc;
trigger notice notice+1hr now

2023-03-20 03:35:24 (JD 2460023.649583)

Siderial time 17.925846 h

Ra 18:10:07.92 Dec -52:25:58.80
(272.533000d, -52.433000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -35.76 Azimuth: 48.56

Sun: Altitude: 39.26 Azimuth: 359.64

Moon: Altitude: 24.88 Azimuth: 19.48

Tunka

Object: Altitude: -26.41 Azimuth: 36.87

Sun: Altitude: 33.78 Azimuth: 329.83

Moon: Altitude: 25.12 Azimuth: 353.17

Kislovodsk

Object: Altitude: -6.19 Azimuth: 0.77

Sun: Altitude: 3.15 Azimuth: 273.60

Moon: Altitude: 7.05 Azimuth: 295.37

Tavrida

Object: Altitude: -7.36 Azimuth: 355.55

Sun: Altitude: -2.95 Azimuth: 267.66

Moon: Altitude: 1.05 Azimuth: 289.33

SAAO

Object: Altitude: 65.08 Azimuth: 329.62

Sun: Altitude: -14.02 Azimuth: 279.63

Moon: Altitude: 8.00 Azimuth: 280.17

IAC

Object: Altitude: -5.14 Azimuth: 328.81

Sun: Altitude: -45.91 Azimuth: 237.06

Moon: Altitude: -37.52 Azimuth: 264.54

Argentina

Object: Altitude: 13.62 Azimuth: 324.04

Sun: Altitude: -53.95 Azimuth: 29.95

Moon: Altitude: -45.34 Azimuth: 358.25

Mexico

Object: Altitude: -60.29 Azimuth: 324.26

Sun: Altitude: -27.12 Azimuth: 107.39

Moon: Altitude: -49.15 Azimuth: 107.44

Ural

Object: Altitude: -20.49 Azimuth: 11.78

Sun: Altitude: 11.29 Azimuth: 288.76

Moon: Altitude: 8.94 Azimuth: 311.01

Vostryakovo

Object: Altitude: -17.85 Azimuth: 357.79

Sun: Altitude: -0.32 Azimuth: 270.28

Moon: Altitude: -0.46 Azimuth: 292.30

Gal. latitude: -15.867467 Gal. longitude: 341.663598

Dist. to Sun: 87.531114

Dist. to Moon: 66.582008

Moon coord.: (340.679312 d, -12.841106 d)

Sun coord.: (359.029220 d, -0.420492 d)

Lunar disk: 0.036649

Lunar phase: 157.926524

Lunar bright limb: 57.083866

No SN in this field

2023-03-20 03:36:18 (JD 2460023.650208)

Siderial time 17.940887 h

Ra 18:10:07.92 Dec -52:25:58.80
(272.533000d, -52.433000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -35.87 Azimuth: 48.67

Sun: Altitude: 39.26 Azimuth: 359.93

Moon: Altitude: 24.84 Azimuth: 19.71

Tunka

Object: Altitude: -26.50 Azimuth: 36.99

Sun: Altitude: 33.85 Azimuth: 330.09

Moon: Altitude: 25.14 Azimuth: 353.40

Kislovodsk

Object: Altitude: -6.19 Azimuth: 0.91

Sun: Altitude: 3.31 Azimuth: 273.76

Moon: Altitude: 7.20 Azimuth: 295.52

Tavrida

Object: Altitude: -7.35 Azimuth: 355.69

Sun: Altitude: -2.79 Azimuth: 267.82

Moon: Altitude: 1.20 Azimuth: 289.48

SAAO

Object: Altitude: 65.18 Azimuth: 329.86

Sun: Altitude: -13.83 Azimuth: 279.50

Moon: Altitude: 8.18 Azimuth: 280.06

IAC

Object: Altitude: -5.03 Azimuth: 328.90

Sun: Altitude: -45.74 Azimuth: 237.28

Moon: Altitude: -37.32 Azimuth: 264.65

Argentina

Object: Altitude: 13.73 Azimuth: 323.96

Sun: Altitude: -54.04 Azimuth: 29.60

Moon: Altitude: -45.34 Azimuth: 357.95

Mexico

Object: Altitude: -60.17 Azimuth: 324.10

Sun: Altitude: -27.31 Azimuth: 107.53

Moon: Altitude: -49.32 Azimuth: 107.62

Ural

Object: Altitude: -20.52 Azimuth: 11.92

Sun: Altitude: 11.40 Azimuth: 288.95

Moon: Altitude: 9.04 Azimuth: 311.20

Vostryakovo

Object: Altitude: -17.85 Azimuth: 357.93

Sun: Altitude: -0.19 Azimuth: 270.46

Moon: Altitude: -0.34 Azimuth: 292.48

Gal. latitude: -15.867467 Gal. longitude: 341.663598

Dist. to Sun: 87.531657

Dist. to Moon: 66.590252

Moon coord.: (340.687915 d, -12.837204 d)

Sun coord.: (359.029791 d, -0.420244 d)

Lunar disk: 0.036621

Lunar phase: 157.935093

Lunar bright limb: 57.079117

No SN in this field

2023-03-20 04:36:18 (JD 2460023.691875)

Siderial time 18.943625 h

Ra 18:10:07.92 Dec -52:25:58.80
(272.533000d, -52.433000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -43.44 Azimuth: 55.37

Sun: Altitude: 37.70 Azimuth: 19.03

Moon: Altitude: 20.89 Azimuth: 34.42

Tunka

Object: Altitude: -32.59 Azimuth: 44.85

Sun: Altitude: 37.18 Azimuth: 348.09

Moon: Altitude: 25.21 Azimuth: 9.00

Kislovodsk

Object: Altitude: -7.23 Azimuth: 10.07

Sun: Altitude: 14.01 Azimuth: 284.41

Moon: Altitude: 16.35 Azimuth: 306.51

Tavrida

Object: Altitude: -7.41 Azimuth: 4.92

Sun: Altitude: 7.84 Azimuth: 278.42

Moon: Altitude: 10.72 Azimuth: 299.97

SAAO

Object: Altitude: 69.60 Azimuth: 350.90

Sun: Altitude: -1.24 Azimuth: 271.26

Moon: Altitude: 20.18 Azimuth: 272.38

IAC

Object: Altitude: 1.14 Azimuth: 335.67

Sun: Altitude: -33.91 Azimuth: 249.37

Moon: Altitude: -24.49 Azimuth: 271.52

Argentina

Object: Altitude: 21.69 Azimuth: 319.21

Sun: Altitude: -57.75 Azimuth: 3.48

Moon: Altitude: -43.06 Azimuth: 338.46

Mexico

Object: Altitude: -51.91 Azimuth: 317.02

Sun: Altitude: -39.13 Azimuth: 118.63

Moon: Altitude: -60.39 Azimuth: 123.04

Ural

Object: Altitude: -22.86 Azimuth: 21.45

Sun: Altitude: 18.76 Azimuth: 302.51

Moon: Altitude: 14.56 Azimuth: 324.48

Vostryakovo

Object: Altitude: -18.26 Azimuth: 7.55

Sun: Altitude: 8.27 Azimuth: 282.90

Moon: Altitude: 7.09 Azimuth: 304.51

Gal. latitude: -15.867467 Gal. longitude: 341.663598

Dist. to Sun: 87.567896

Dist. to Moon: 67.140091

Moon coord.: (341.260772 d, -12.576485 d)

Sun coord.: (359.067818 d, -0.403757 d)

Lunar disk: 0.034772

Lunar phase: 158.506147

Lunar bright limb: 56.758685

No SN in this field

2025-04-04 17:35:20 (JD 2460770.232870)

Siderial time 8.982592 h

Ra 18:10:07.92 Dec -52:25:58.80
(272.533000d, -52.433000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -20.44 Azimuth: 331.12

Sun: Altitude: -27.80 Azimuth: 215.32

Moon: Altitude: 3.28 Azimuth: 132.15

Tunka

Object: Altitude: -30.57 Azimuth: 317.56

Sun: Altitude: -32.07 Azimuth: 187.66

Moon: Altitude: 16.87 Azimuth: 114.32

Kislovodsk

Object: Altitude: -57.98 Azimuth: 302.60

Sun: Altitude: -20.59 Azimuth: 120.68

Moon: Altitude: 55.94 Azimuth: 75.53

Tavrida

Object: Altitude: -63.68 Azimuth: 300.91

Sun: Altitude: -14.73 Azimuth: 114.13

Moon: Altitude: 61.34 Azimuth: 64.66

SAAO

Object: Altitude: -2.33 Azimuth: 344.83

Sun: Altitude: -15.16 Azimuth: 87.32

Moon: Altitude: 27.53 Azimuth: 163.86

IAC

Object: Altitude: -64.29 Azimuth: 16.88

Sun: Altitude: 23.04 Azimuth: 84.08

Moon: Altitude: 71.45 Azimuth: 265.43

Argentina

Object: Altitude: 11.34 Azimuth: 34.22

Sun: Altitude: 50.01 Azimuth: 157.81

Moon: Altitude: -2.34 Azimuth: 237.98

Mexico

Object: Altitude: -15.47 Azimuth: 37.50

Sun: Altitude: 54.33 Azimuth: 309.40

Moon: Altitude: -4.32 Azimuth: 233.29

Ural

Object: Altitude: -54.08 Azimuth: 290.77

Sun: Altitude: -20.28 Azimuth: 140.33

Moon: Altitude: 42.16 Azimuth: 76.90

Vostryakovo

Object: Altitude: -65.24 Azimuth: 280.98

Sun: Altitude: -12.08 Azimuth: 119.58

Moon: Altitude: 53.82 Azimuth: 54.96

Gal. latitude: -15.867467 Gal. longitude: 341.663598

Dist. to Sun: 101.418940

Dist. to Moon: 154.777827

Moon coord.: (101.692251 d, 28.148766 d)

Sun coord.: (13.670462 d, 5.852626 d)

Lunar disk: 0.462097

Lunar phase: 94.347551

Lunar bright limb: 274.242143

No SN in this field
Recent coverage and limits telegrams
#######################################################################################
#######################################################################################

  ID = 7948
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) started inspect of the FERMI GRB230320.15 (trigger No 700976129,18h 11m 00.00s , -46d 29m 24.0s, R=9.79) errorbox  244 sec after notice time and 276 sec after trigger time at 2023-03-20 03:40:00 UT, with upper limit up to  18.4 mag. Observations started at twilight.  The observations began at zenith distance = 22 deg. The sun  altitude  is -13.8 deg. 

The galactic latitude b = -13 deg., longitude l = 347 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2205183

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

     306 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 13m 00.27s , -46d 25m 27.9s) |   C |    60 | 18.4 |        
     307 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 14m 17.41s , -46d 25m 10.9s) |   C |    60 | 18.0 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 24m 39.43s , -46d 24m 13.2s) |   C |    60 | 18.4 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 25m 56.52s , -46d 23m 56.3s) |   C |    60 | 18.1 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 07m 20.38s , -48d 17m 13.2s) |   C |    60 | 18.4 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 08m 40.17s , -48d 16m 57.3s) |   C |    60 | 18.0 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 19m 27.11s , -48d 18m 46.5s) |   C |    60 | 18.3 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 20m 46.93s , -48d 18m 30.7s) |   C |    60 | 18.0 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 51m 01.39s , -46d 24m 20.6s) |   C |    60 | 17.6 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 52m 18.37s , -46d 24m 05.0s) |   C |    60 | 17.3 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 02m 33.85s , -46d 23m 14.9s) |   C |    60 | 17.9 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 03m 50.82s , -46d 22m 59.4s) |   C |    60 | 17.5 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 59m 24.39s , -44d 28m 56.3s) |   C |    60 | 17.1 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 58m 09.97s , -44d 29m 12.7s) |   C |    60 | 17.5 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 10m 30.52s , -44d 29m 57.5s) |   C |    60 | 17.4 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 09m 16.08s , -44d 30m 14.6s) |   C |    60 | 17.8 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 7949
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) started inspect of the FERMI GRB230320.15 (trigger No 700976129,18h 11m 00.00s , -46d 29m 24.0s, R=9.79) errorbox  244 sec after notice time and 276 sec after trigger time at 2023-03-20 03:40:00 UT, with upper limit up to  18.4 mag. Observations started at twilight.  The observations began at zenith distance = 22 deg. The sun  altitude  is -13.8 deg. 

The galactic latitude b = -13 deg., longitude l = 347 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2205183

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

     306 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 13m 00.27s , -46d 25m 27.9s) |   C |    60 | 18.4 |        
     307 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 14m 17.41s , -46d 25m 10.9s) |   C |    60 | 18.0 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 24m 39.43s , -46d 24m 13.2s) |   C |    60 | 18.4 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 25m 56.52s , -46d 23m 56.3s) |   C |    60 | 18.1 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 07m 20.38s , -48d 17m 13.2s) |   C |    60 | 18.4 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 08m 40.17s , -48d 16m 57.3s) |   C |    60 | 18.0 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 19m 27.11s , -48d 18m 46.5s) |   C |    60 | 18.3 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 20m 46.93s , -48d 18m 30.7s) |   C |    60 | 18.0 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 51m 01.39s , -46d 24m 20.6s) |   C |    60 | 17.6 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 52m 18.37s , -46d 24m 05.0s) |   C |    60 | 17.3 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 02m 33.85s , -46d 23m 14.9s) |   C |    60 | 17.9 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 03m 50.82s , -46d 22m 59.4s) |   C |    60 | 17.5 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 59m 24.39s , -44d 28m 56.3s) |   C |    60 | 17.1 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 58m 09.97s , -44d 29m 12.7s) |   C |    60 | 17.5 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 10m 30.52s , -44d 29m 57.5s) |   C |    60 | 17.4 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 09m 16.08s , -44d 30m 14.6s) |   C |    60 | 17.8 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 7950
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) started inspect of the FERMI GRB230320.15 (trigger No 700976129,18h 11m 00.00s , -46d 29m 24.0s, R=9.79) errorbox  244 sec after notice time and 276 sec after trigger time at 2023-03-20 03:40:00 UT, with upper limit up to  18.4 mag. Observations started at twilight.  The observations began at zenith distance = 22 deg. The sun  altitude  is -13.8 deg. 

The galactic latitude b = -13 deg., longitude l = 347 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2205183

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

     306 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 13m 00.27s , -46d 25m 27.9s) |   C |    60 | 18.4 |        
     307 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 14m 17.41s , -46d 25m 10.9s) |   C |    60 | 18.0 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 24m 39.43s , -46d 24m 13.2s) |   C |    60 | 18.4 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 25m 56.52s , -46d 23m 56.3s) |   C |    60 | 18.1 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 07m 20.38s , -48d 17m 13.2s) |   C |    60 | 18.4 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 08m 40.17s , -48d 16m 57.3s) |   C |    60 | 18.0 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 19m 27.11s , -48d 18m 46.5s) |   C |    60 | 18.3 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 20m 46.93s , -48d 18m 30.7s) |   C |    60 | 18.0 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 51m 01.39s , -46d 24m 20.6s) |   C |    60 | 17.6 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 52m 18.37s , -46d 24m 05.0s) |   C |    60 | 17.3 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 02m 33.85s , -46d 23m 14.9s) |   C |    60 | 17.9 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 03m 50.82s , -46d 22m 59.4s) |   C |    60 | 17.5 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 59m 24.39s , -44d 28m 56.3s) |   C |    60 | 17.1 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 58m 09.97s , -44d 29m 12.7s) |   C |    60 | 17.5 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 10m 30.52s , -44d 29m 57.5s) |   C |    60 | 17.4 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 09m 16.08s , -44d 30m 14.6s) |   C |    60 | 17.8 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 7951
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) started inspect of the FERMI GRB230320.15 (trigger No 700976129,18h 10m 07.92s , -52d 25m 58.8s, R=6.3) errorbox  244 sec after notice time and 276 sec after trigger time at 2023-03-20 03:40:00 UT, with upper limit up to  18.4 mag. Observations started at twilight.  The observations began at zenith distance = 22 deg. The sun  altitude  is -13.8 deg. 

The galactic latitude b = -16 deg., longitude l = 342 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2205171

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

     306 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 13m 00.27s , -46d 25m 27.9s) |   C |    60 | 18.4 |        
     307 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 14m 17.41s , -46d 25m 10.9s) |   C |    60 | 18.0 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 24m 39.43s , -46d 24m 13.2s) |   C |    60 | 18.4 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 25m 56.52s , -46d 23m 56.3s) |   C |    60 | 18.1 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 07m 20.38s , -48d 17m 13.2s) |   C |    60 | 18.4 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 08m 40.17s , -48d 16m 57.3s) |   C |    60 | 18.0 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 19m 27.11s , -48d 18m 46.5s) |   C |    60 | 18.3 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 20m 46.93s , -48d 18m 30.7s) |   C |    60 | 18.0 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 51m 01.39s , -46d 24m 20.6s) |   C |    60 | 17.6 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 52m 18.37s , -46d 24m 05.0s) |   C |    60 | 17.3 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 02m 33.85s , -46d 23m 14.9s) |   C |    60 | 17.9 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 03m 50.82s , -46d 22m 59.4s) |   C |    60 | 17.5 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 59m 24.39s , -44d 28m 56.3s) |   C |    60 | 17.1 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 58m 09.97s , -44d 29m 12.7s) |   C |    60 | 17.5 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 10m 30.52s , -44d 29m 57.5s) |   C |    60 | 17.4 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 09m 16.08s , -44d 30m 14.6s) |   C |    60 | 17.8 |        
    1000 | 2023-03-20 03:51:34 |         MASTER-SAAO | (18h 20m 43.47s , -44d 30m 24.0s) |   C |    60 | 17.3 |        
    1000 | 2023-03-20 03:51:34 |         MASTER-SAAO | (18h 19m 29.02s , -44d 30m 42.4s) |   C |    60 | 17.7 |        
    1539 | 2023-03-20 04:00:33 |         MASTER-SAAO | (18h 14m 13.19s , -46d 24m 01.6s) |   C |    60 | 16.4 |        
    1539 | 2023-03-20 04:00:33 |         MASTER-SAAO | (18h 12m 56.13s , -46d 24m 16.1s) |   C |    60 | 16.9 |        
    1639 | 2023-03-20 04:02:13 |         MASTER-SAAO | (18h 25m 49.04s , -46d 23m 33.0s) |   C |    60 | 16.3 |        
    1639 | 2023-03-20 04:02:13 |         MASTER-SAAO | (18h 24m 31.90s , -46d 23m 47.4s) |   C |    60 | 16.8 |        
    1719 | 2023-03-20 04:03:32 |         MASTER-SAAO | (18h 08m 43.44s , -48d 17m 41.0s) |   C |    60 | 16.1 |        
    1719 | 2023-03-20 04:03:33 |         MASTER-SAAO | (18h 07m 23.57s , -48d 17m 54.4s) |   C |    60 | 16.7 |        
    1810 | 2023-03-20 04:05:04 |         MASTER-SAAO | (18h 20m 39.39s , -48d 19m 14.5s) |   C |    60 | 15.6 |        
    1810 | 2023-03-20 04:05:04 |         MASTER-SAAO | (18h 19m 19.38s , -48d 19m 28.2s) |   C |    60 | 16.2 |        
    1901 | 2023-03-20 04:06:35 |         MASTER-SAAO | (17h 52m 17.53s , -46d 23m 26.5s) |   C |    60 | 14.9 |        
    1901 | 2023-03-20 04:06:35 |         MASTER-SAAO | (17h 51m 00.44s , -46d 23m 40.5s) |   C |    60 | 15.6 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 7967
TYPE = 35
DAYS = 2


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) started inspect of the FERMI GRB230320.15 (trigger No 700976129,18h 10m 07.92s , -52d 25m 58.8s, R=6.3) errorbox  244 sec after notice time and 276 sec after trigger time at 2023-03-20 03:40:00 UT, with upper limit up to  18.5 mag. Observations started at twilight.  The observations began at zenith distance = 22 deg. The sun  altitude  is -13.8 deg. 

The galactic latitude b = -16 deg., longitude l = 342 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2205171

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

     306 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 13m 00.27s , -46d 25m 27.9s) |   C |    60 | 18.4 |        
     307 | 2023-03-20 03:40:00 |         MASTER-SAAO | (18h 14m 17.41s , -46d 25m 10.9s) |   C |    60 | 18.0 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 24m 39.43s , -46d 24m 13.2s) |   C |    60 | 18.4 |        
     397 | 2023-03-20 03:41:31 |         MASTER-SAAO | (18h 25m 56.52s , -46d 23m 56.3s) |   C |    60 | 18.1 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 07m 20.38s , -48d 17m 13.2s) |   C |    60 | 18.4 |        
     477 | 2023-03-20 03:42:51 |         MASTER-SAAO | (18h 08m 40.17s , -48d 16m 57.3s) |   C |    60 | 18.0 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 19m 27.11s , -48d 18m 46.5s) |   C |    60 | 18.3 |        
     568 | 2023-03-20 03:44:21 |         MASTER-SAAO | (18h 20m 46.93s , -48d 18m 30.7s) |   C |    60 | 18.0 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 51m 01.39s , -46d 24m 20.6s) |   C |    60 | 17.6 |        
     658 | 2023-03-20 03:45:52 |         MASTER-SAAO | (17h 52m 18.37s , -46d 24m 05.0s) |   C |    60 | 17.3 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 02m 33.85s , -46d 23m 14.9s) |   C |    60 | 17.9 |        
     738 | 2023-03-20 03:47:11 |         MASTER-SAAO | (18h 03m 50.82s , -46d 22m 59.4s) |   C |    60 | 17.5 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 59m 24.39s , -44d 28m 56.3s) |   C |    60 | 17.1 |        
     817 | 2023-03-20 03:48:31 |         MASTER-SAAO | (17h 58m 09.97s , -44d 29m 12.7s) |   C |    60 | 17.5 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 10m 30.52s , -44d 29m 57.5s) |   C |    60 | 17.4 |        
     909 | 2023-03-20 03:50:03 |         MASTER-SAAO | (18h 09m 16.08s , -44d 30m 14.6s) |   C |    60 | 17.8 |        
    1000 | 2023-03-20 03:51:34 |         MASTER-SAAO | (18h 20m 43.47s , -44d 30m 24.0s) |   C |    60 | 17.3 |        
    1000 | 2023-03-20 03:51:34 |         MASTER-SAAO | (18h 19m 29.02s , -44d 30m 42.4s) |   C |    60 | 17.7 |        
    1539 | 2023-03-20 04:00:33 |         MASTER-SAAO | (18h 14m 13.19s , -46d 24m 01.6s) |   C |    60 | 16.4 |        
    1539 | 2023-03-20 04:00:33 |         MASTER-SAAO | (18h 12m 56.13s , -46d 24m 16.1s) |   C |    60 | 16.9 |        
    1639 | 2023-03-20 04:02:13 |         MASTER-SAAO | (18h 25m 49.04s , -46d 23m 33.0s) |   C |    60 | 16.3 |        
    1639 | 2023-03-20 04:02:13 |         MASTER-SAAO | (18h 24m 31.90s , -46d 23m 47.4s) |   C |    60 | 16.8 |        
    1719 | 2023-03-20 04:03:32 |         MASTER-SAAO | (18h 08m 43.44s , -48d 17m 41.0s) |   C |    60 | 16.1 |        
    1719 | 2023-03-20 04:03:33 |         MASTER-SAAO | (18h 07m 23.57s , -48d 17m 54.4s) |   C |    60 | 16.7 |        
    1810 | 2023-03-20 04:05:04 |         MASTER-SAAO | (18h 20m 39.39s , -48d 19m 14.5s) |   C |    60 | 15.6 |        
    1810 | 2023-03-20 04:05:04 |         MASTER-SAAO | (18h 19m 19.38s , -48d 19m 28.2s) |   C |    60 | 16.2 |        
    1901 | 2023-03-20 04:06:35 |         MASTER-SAAO | (17h 52m 17.53s , -46d 23m 26.5s) |   C |    60 | 14.9 |        
    1901 | 2023-03-20 04:06:35 |         MASTER-SAAO | (17h 51m 00.44s , -46d 23m 40.5s) |   C |    60 | 15.6 |        
  150785 | 2023-03-21 21:27:59 |         MASTER-SAAO | (18h 22m 55.95s , -52d 03m 47.2s) |   C |    60 | 17.5 |        
  150874 | 2023-03-21 21:29:28 |         MASTER-SAAO | (18h 35m 56.03s , -52d 05m 24.9s) |   C |    60 | 17.4 |        
  151122 | 2023-03-21 21:33:36 |         MASTER-SAAO | (18h 25m 59.34s , -50d 10m 45.6s) |   C |    60 | 17.3 |        
  151719 | 2023-03-21 21:43:32 |         MASTER-SAAO | (18h 22m 58.34s , -52d 04m 51.0s) |   C |    60 | 17.6 |        
  151809 | 2023-03-21 21:45:02 |         MASTER-SAAO | (18h 35m 52.89s , -52d 06m 02.0s) |   C |    60 | 17.5 |        
  151899 | 2023-03-21 21:46:32 |         MASTER-SAAO | (18h 29m 51.91s , -48d 16m 12.0s) |   C |    60 | 17.3 |        
  151978 | 2023-03-21 21:47:52 |         MASTER-SAAO | (18h 12m 37.68s , -46d 22m 55.5s) |   C |    60 | 17.3 |        
  152068 | 2023-03-21 21:49:21 |         MASTER-SAAO | (18h 24m 13.63s , -46d 22m 10.8s) |   C |    60 | 17.3 |        
  152147 | 2023-03-21 21:50:40 |         MASTER-SAAO | (18h 25m 58.00s , -50d 11m 04.8s) |   C |    60 | 17.6 |        
  152237 | 2023-03-21 21:52:10 |         MASTER-SAAO | (18h 38m 20.80s , -50d 12m 16.8s) |   C |    60 | 17.3 |        
  152836 | 2023-03-21 22:02:09 |         MASTER-SAAO | (18h 22m 57.27s , -52d 05m 14.8s) |   C |    60 | 17.9 |        
  152915 | 2023-03-21 22:03:29 |         MASTER-SAAO | (18h 35m 51.86s , -52d 06m 26.6s) |   C |    60 | 17.8 |        
  153005 | 2023-03-21 22:04:58 |         MASTER-SAAO | (18h 29m 54.49s , -48d 17m 59.3s) |   C |    60 | 17.7 |        
  153084 | 2023-03-21 22:06:18 |         MASTER-SAAO | (18h 41m 52.05s , -48d 16m 59.1s) |   C |    60 | 17.5 |        
  153174 | 2023-03-21 22:07:48 |         MASTER-SAAO | (18h 12m 40.69s , -46d 23m 56.4s) |   C |    60 | 17.6 |        
  153264 | 2023-03-21 22:09:17 |         MASTER-SAAO | (18h 24m 18.71s , -46d 23m 00.5s) |   C |    60 | 17.7 |        
  153343 | 2023-03-21 22:10:37 |         MASTER-SAAO | (18h 25m 50.41s , -50d 11m 28.4s) |   C |    60 | 17.7 |        
  153433 | 2023-03-21 22:12:07 |         MASTER-SAAO | (18h 38m 20.16s , -50d 10m 41.3s) |   C |    60 | 17.8 |        
  153512 | 2023-03-21 22:13:26 |         MASTER-SAAO | (18h 34m 39.41s , -46d 24m 46.1s) |   C |    60 | 17.6 |        
  153681 | 2023-03-21 22:16:14 |         MASTER-SAAO | (18h 20m 52.90s , -53d 59m 59.3s) |   C |    60 | 18.2 |        
  153770 | 2023-03-21 22:17:43 |         MASTER-SAAO | (18h 34m 32.38s , -53d 59m 03.1s) |   C |    60 | 18.2 |        
  153849 | 2023-03-21 22:19:03 |         MASTER-SAAO | (18h 46m 39.33s , -53d 58m 51.4s) |   C |    60 | 18.2 |        
  153938 | 2023-03-21 22:20:32 |         MASTER-SAAO | (19h 00m 21.96s , -54d 00m 03.8s) |   C |    60 | 18.0 |        
  154028 | 2023-03-21 22:22:01 |         MASTER-SAAO | (18h 29m 47.04s , -48d 18m 46.8s) |   C |    60 | 17.9 |        
  154107 | 2023-03-21 22:23:20 |         MASTER-SAAO | (18h 41m 54.11s , -48d 18m 35.5s) |   C |    60 | 17.7 |        
  154196 | 2023-03-21 22:24:50 |         MASTER-SAAO | (18h 12m 39.90s , -46d 22m 46.5s) |   C |    60 | 17.8 |        
  154275 | 2023-03-21 22:26:09 |         MASTER-SAAO | (18h 24m 15.13s , -46d 24m 41.7s) |   C |    60 | 17.9 |        
  154364 | 2023-03-21 22:27:38 |         MASTER-SAAO | (18h 47m 32.79s , -52d 06m 05.4s) |   C |    60 | 18.1 |        
  154444 | 2023-03-21 22:28:57 |         MASTER-SAAO | (19h 00m 33.87s , -52d 05m 17.1s) |   C |    60 | 18.0 |        
  154534 | 2023-03-21 22:30:28 |         MASTER-SAAO | (18h 34m 44.57s , -46d 24m 03.0s) |   C |    60 | 17.8 |        
  154703 | 2023-03-21 22:33:17 |         MASTER-SAAO | (18h 20m 53.90s , -54d 00m 29.5s) |   C |    60 | 18.3 |        
  154793 | 2023-03-21 22:34:46 |         MASTER-SAAO | (18h 34m 27.78s , -53d 59m 28.3s) |   C |    60 | 18.2 |        
  154872 | 2023-03-21 22:36:05 |         MASTER-SAAO | (18h 46m 42.36s , -54d 01m 01.6s) |   C |    60 | 18.3 |        
  154961 | 2023-03-21 22:37:35 |         MASTER-SAAO | (19h 00m 21.06s , -53d 59m 53.7s) |   C |    60 | 18.2 |        
  155041 | 2023-03-21 22:38:54 |         MASTER-SAAO | (18h 49m 32.29s , -50d 11m 21.9s) |   C |    60 | 18.0 |        
  155210 | 2023-03-21 22:41:44 |         MASTER-SAAO | (18h 19m 58.96s , -55d 54m 40.5s) |   C |    60 | 18.4 |        
  155300 | 2023-03-21 22:43:14 |         MASTER-SAAO | (18h 34m 11.32s , -55d 53m 30.9s) |   C |    60 | 18.5 |        
  155390 | 2023-03-21 22:44:43 |         MASTER-SAAO | (18h 47m 35.41s , -52d 07m 06.1s) |   C |    60 | 18.2 |        
  155469 | 2023-03-21 22:46:02 |         MASTER-SAAO | (19h 00m 39.45s , -52d 06m 07.3s) |   C |    60 | 18.1 |        
  155558 | 2023-03-21 22:47:31 |         MASTER-SAAO | (18h 34m 37.32s , -46d 24m 21.5s) |   C |    60 | 17.9 |        
  155726 | 2023-03-21 22:50:20 |         MASTER-SAAO | (18h 20m 54.49s , -54d 00m 04.8s) |   C |    60 | 18.3 |        
  155806 | 2023-03-21 22:51:39 |         MASTER-SAAO | (18h 34m 22.75s , -54d 01m 20.3s) |   C |    60 | 18.4 |        
  155896 | 2023-03-21 22:53:10 |         MASTER-SAAO | (18h 46m 45.00s , -54d 01m 25.7s) |   C |    60 | 18.4 |        
  155986 | 2023-03-21 22:54:39 |         MASTER-SAAO | (19h 00m 17.27s , -54d 00m 04.9s) |   C |    60 | 18.4 |        
  156065 | 2023-03-21 22:55:58 |         MASTER-SAAO | (18h 49m 35.48s , -50d 13m 23.2s) |   C |    60 | 18.1 |        
  156234 | 2023-03-21 22:58:48 |         MASTER-SAAO | (18h 19m 51.05s , -55d 54m 10.7s) |   C |    60 | 18.4 |        
  156324 | 2023-03-21 23:00:18 |         MASTER-SAAO | (18h 34m 06.37s , -55d 53m 27.8s) |   C |    60 | 18.5 |        
  156404 | 2023-03-21 23:01:37 |         MASTER-SAAO | (18h 47m 38.48s , -52d 06m 45.6s) |   C |    60 | 18.3 |        
  156493 | 2023-03-21 23:03:07 |         MASTER-SAAO | (19h 00m 32.82s , -52d 07m 58.3s) |   C |    60 | 18.3 |        
  157032 | 2023-03-21 23:12:06 |         MASTER-SAAO | (18h 49m 31.28s , -50d 13m 58.2s) |   C |    60 | 18.2 |        
  157201 | 2023-03-21 23:14:54 |         MASTER-SAAO | (18h 19m 52.67s , -55d 53m 54.4s) |   C |    60 | 18.4 |        
  157280 | 2023-03-21 23:16:14 |         MASTER-SAAO | (18h 34m 08.37s , -55d 55m 40.8s) |   C |    60 | 18.5 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.

MASTER, 2002-2025