MASTER Net MASTER Database: GRB230405.83 page

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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GRB coord: ErrorBox (deg): Sys Error (deg):
Sattel : Trigger: Notice:
GRB_Name: trignum: Nights after: FullSky


Name SWIFT GRB230405.83
Trignum 1163119
Trigger time 2023-04-05 19:58:03.5
Notice time 2023-04-05 19:58:34.158445
Coord, eb (18h 05m 52.08s , -47d 04m 12.0s) , 0.05
Max dist: 1 sigma 3 sigma
AGN candidates: Milliquas
r90wise
wiseXgaia
BL Lac candidates: 1 Sigma
3 Sigma

MASTER observatories and transients from them in error-field
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)

All alerts for this trigger
id noticetime coord2000 satel errorbox type trigger seq trig_type links
2208933 2023-04-05 20:00:05.364052 18h 05m 45.34s -47d 04m 09.5s SWIFT 0 alert 1163119 1 69 alert
2208935 2023-04-05 20:04:33.63735 18h 05m 53.66s -47d 04m 15.2s SWIFT 0 alert 1163119 2 68 alert
2208950 2023-04-05 20:20:17.184714 18h 05m 45.84s -47d 04m 12.0s SWIFT 0.0005 alert 1163119 2 67 alert
2208901 2023-04-05 19:58:34.158445 18h 05m 52.08s -47d 04m 12.0s SWIFT 0.05 alert 1163119 1 61 alert

DAYS:

MASTER optical transients in this field
Will be published in GCN, ATEL

Synchronous WFC images
Distance datetime coord2000 observatory camera links
137.5 2023-04-05 19:58:01.775 00h 44m 11.00s +75d 17m 21.0s Amur 29009 Database Amur
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2023-04-05 19:58:03 (JD 2460040.331979)

Siderial time 11.399544 h

Ra 18:05:52.08 Dec -47:04:12.00
(271.467000d, -47.070000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -7.82 Azimuth: 352.73

Sun: Altitude: -9.80 Azimuth: 247.87

Moon: Altitude: 10.72 Azimuth: 72.52

Tunka

Object: Altitude: -13.33 Azimuth: 336.31

Sun: Altitude: -21.84 Azimuth: 226.04

Moon: Altitude: 23.50 Azimuth: 50.77

Kislovodsk

Object: Altitude: -33.64 Azimuth: 305.48

Sun: Altitude: -37.49 Azimuth: 156.79

Moon: Altitude: 41.69 Azimuth: 339.44

Tavrida

Object: Altitude: -39.27 Azimuth: 301.42

Sun: Altitude: -33.76 Azimuth: 147.32

Moon: Altitude: 38.16 Azimuth: 329.26

SAAO

Object: Altitude: 7.38 Azimuth: 322.38

Sun: Altitude: -44.40 Azimuth: 63.56

Moon: Altitude: 44.32 Azimuth: 237.03

IAC

Object: Altitude: -62.73 Azimuth: 320.39

Sun: Altitude: -8.12 Azimuth: 101.45

Moon: Altitude: 12.55 Azimuth: 279.93

Argentina

Object: Altitude: -7.35 Azimuth: 18.44

Sun: Altitude: 29.30 Azimuth: 119.40

Moon: Altitude: -29.20 Azimuth: 294.06

Mexico

Object: Altitude: -36.28 Azimuth: 51.81

Sun: Altitude: 63.71 Azimuth: 20.00

Moon: Altitude: -59.41 Azimuth: 203.82

Ural

Object: Altitude: -32.73 Azimuth: 307.48

Sun: Altitude: -26.87 Azimuth: 178.54

Moon: Altitude: 30.35 Azimuth: 2.08

Vostryakovo

Object: Altitude: -42.19 Azimuth: 295.24

Sun: Altitude: -25.63 Azimuth: 154.42

Moon: Altitude: 29.75 Azimuth: 336.90

Gal. latitude: -12.933484 Gal. longitude: 346.353208

Dist. to Sun: 103.132341

Dist. to Moon: 81.533429

Moon coord.: (191.118235 d, -2.595924 d)

Sun coord.: (14.227498 d, 6.084554 d)

Lunar disk: 0.998349

Lunar phase: 4.657619

Lunar bright limb: 318.479051

No SN in this field

2023-04-05 19:58:34 (JD 2460040.332338)

Siderial time 11.408178 h

Ra 18:05:52.08 Dec -47:04:12.00
(271.467000d, -47.070000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -7.81 Azimuth: 352.82

Sun: Altitude: -9.73 Azimuth: 247.97

Moon: Altitude: 10.64 Azimuth: 72.62

Tunka

Object: Altitude: -13.30 Azimuth: 336.40

Sun: Altitude: -21.78 Azimuth: 226.16

Moon: Altitude: 23.43 Azimuth: 50.88

Kislovodsk

Object: Altitude: -33.57 Azimuth: 305.54

Sun: Altitude: -37.53 Azimuth: 156.95

Moon: Altitude: 41.72 Azimuth: 339.60

Tavrida

Object: Altitude: -39.19 Azimuth: 301.47

Sun: Altitude: -33.81 Azimuth: 147.46

Moon: Altitude: 38.20 Azimuth: 329.41

SAAO

Object: Altitude: 7.45 Azimuth: 322.32

Sun: Altitude: -44.50 Azimuth: 63.44

Moon: Altitude: 44.41 Azimuth: 236.91

IAC

Object: Altitude: -62.66 Azimuth: 320.28

Sun: Altitude: -8.23 Azimuth: 101.51

Moon: Altitude: 12.65 Azimuth: 280.00

Argentina

Object: Altitude: -7.39 Azimuth: 18.35

Sun: Altitude: 29.20 Azimuth: 119.31

Moon: Altitude: -29.10 Azimuth: 293.97

Mexico

Object: Altitude: -36.37 Azimuth: 51.83

Sun: Altitude: 63.68 Azimuth: 20.28

Moon: Altitude: -59.37 Azimuth: 204.06

Ural

Object: Altitude: -32.68 Azimuth: 307.56

Sun: Altitude: -26.87 Azimuth: 178.68

Moon: Altitude: 30.35 Azimuth: 2.23

Vostryakovo

Object: Altitude: -42.13 Azimuth: 295.32

Sun: Altitude: -25.66 Azimuth: 154.56

Moon: Altitude: 29.78 Azimuth: 337.04

Gal. latitude: -12.933484 Gal. longitude: 346.353208

Dist. to Sun: 103.132663

Dist. to Moon: 81.529134

Moon coord.: (191.122266 d, -2.598051 d)

Sun coord.: (14.227826 d, 6.084691 d)

Lunar disk: 0.998352

Lunar phase: 4.653682

Lunar bright limb: 318.496676

No SN in this field

2023-04-05 20:58:34 (JD 2460040.374005)

Siderial time 12.410916 h

Ra 18:05:52.08 Dec -47:04:12.00
(271.467000d, -47.070000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -7.47 Azimuth: 3.13

Sun: Altitude: -0.53 Azimuth: 259.78

Moon: Altitude: 1.35 Azimuth: 83.90

Tunka

Object: Altitude: -10.33 Azimuth: 346.40

Sun: Altitude: -14.37 Azimuth: 239.79

Moon: Altitude: 15.64 Azimuth: 63.95

Kislovodsk

Object: Altitude: -25.10 Azimuth: 312.13

Sun: Altitude: -40.07 Azimuth: 175.84

Moon: Altitude: 43.41 Azimuth: 359.28

Tavrida

Object: Altitude: -30.40 Azimuth: 307.86

Sun: Altitude: -38.09 Azimuth: 165.15

Moon: Altitude: 41.75 Azimuth: 347.87

SAAO

Object: Altitude: 15.75 Azimuth: 316.22

Sun: Altitude: -54.94 Azimuth: 46.80

Moon: Altitude: 53.84 Azimuth: 219.83

IAC

Object: Altitude: -53.39 Azimuth: 312.04

Sun: Altitude: -20.95 Azimuth: 109.60

Moon: Altitude: 24.97 Azimuth: 288.23

Argentina

Object: Altitude: -10.36 Azimuth: 8.45

Sun: Altitude: 17.56 Azimuth: 109.11

Moon: Altitude: -17.27 Azimuth: 284.71

Mexico

Object: Altitude: -46.58 Azimuth: 52.61

Sun: Altitude: 56.48 Azimuth: 46.83

Moon: Altitude: -52.27 Azimuth: 226.89

Ural

Object: Altitude: -26.63 Azimuth: 317.06

Sun: Altitude: -25.86 Azimuth: 195.31

Moon: Altitude: 28.65 Azimuth: 18.85

Vostryakovo

Object: Altitude: -34.72 Azimuth: 304.35

Sun: Altitude: -28.17 Azimuth: 171.07

Moon: Altitude: 31.61 Azimuth: 353.86

Gal. latitude: -12.933484 Gal. longitude: 346.353208

Dist. to Sun: 103.170042

Dist. to Moon: 81.030196

Moon coord.: (191.590658 d, -2.845006 d)

Sun coord.: (14.265881 d, 6.100510 d)

Lunar disk: 0.998657

Lunar phase: 4.199649

Lunar bright limb: 320.769640

No SN in this field

2024-11-21 16:32:37 (JD 2460636.189317)

Siderial time 23.129336 h

Ra 18:05:52.08 Dec -47:04:12.00
(271.467000d, -47.070000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -79.81 Azimuth: 102.94

Sun: Altitude: -56.03 Azimuth: 214.12

Moon: Altitude: 34.11 Azimuth: 278.94

Tunka

Object: Altitude: -64.47 Azimuth: 85.06

Sun: Altitude: -58.01 Azimuth: 171.24

Moon: Altitude: 18.84 Azimuth: 260.60

Kislovodsk

Object: Altitude: -25.09 Azimuth: 47.86

Sun: Altitude: -31.26 Azimuth: 91.47

Moon: Altitude: -18.54 Azimuth: 213.79

Tavrida

Object: Altitude: -21.39 Azimuth: 44.04

Sun: Altitude: -25.19 Azimuth: 86.13

Moon: Altitude: -20.72 Azimuth: 205.78

SAAO

Object: Altitude: 43.73 Azimuth: 53.62

Sun: Altitude: 8.31 Azimuth: 71.48

Moon: Altitude: -73.65 Azimuth: 313.77

IAC

Object: Altitude: 12.21 Azimuth: 14.69

Sun: Altitude: 17.81 Azimuth: 54.40

Moon: Altitude: -35.68 Azimuth: 151.07

Argentina

Object: Altitude: 61.59 Azimuth: 311.64

Sun: Altitude: 78.01 Azimuth: 167.79

Moon: Altitude: -20.80 Azimuth: 101.79

Mexico

Object: Altitude: -11.68 Azimuth: 318.44

Sun: Altitude: 27.00 Azimuth: 319.12

Moon: Altitude: 34.42 Azimuth: 94.69

Ural

Object: Altitude: -41.45 Azimuth: 64.32

Sun: Altitude: -38.81 Azimuth: 115.56

Moon: Altitude: -1.48 Azimuth: 226.98

Vostryakovo

Object: Altitude: -30.45 Azimuth: 49.95

Sun: Altitude: -27.59 Azimuth: 94.35

Moon: Altitude: -10.12 Azimuth: 207.98

Gal. latitude: -12.933484 Gal. longitude: 346.353208

Dist. to Sun: 38.691185

Dist. to Moon: 134.270994

Moon coord.: (137.602334 d, 20.450362 d)

Sun coord.: (237.312755 d, -20.053450 d)

Lunar disk: 0.635272

Lunar phase: 74.303400

Lunar bright limb: 106.070457

No SN in this field
Recent coverage and limits telegrams

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

  ID = 8026
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 230405B ( K. L. Page et al., GCN 33571) errorbox  4283 sec after notice time and 4302 sec after trigger time at 2023-04-05 21:09:46 UT, with upper limit up to  19.1 mag. The observations began at zenith distance = 73 deg. The sun  altitude  is -56.4 deg. 

The galactic latitude b = -13 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2208901

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

    4393 |         MASTER-SAAO | P\\ |   180 | 16.0 |        
    4573 |         MASTER-SAAO | P\\ |   540 | 16.1 |  Coadd 
    5203 |         MASTER-SAAO | P\\ |  1800 | 16.4 |  Coadd 
    4393 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4573 |         MASTER-SAAO |  P/ |   540 | 16.2 |  Coadd 
    5203 |         MASTER-SAAO |  P/ |  1800 | 16.4 |  Coadd 
    4592 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    4592 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4803 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4803 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    5014 |         MASTER-SAAO |  P/ |   180 | 16.1 |        
    5194 |         MASTER-SAAO |  P/ |   540 | 16.2 |  Coadd 
    5014 |         MASTER-SAAO | P\\ |   180 | 16.1 |        
    5194 |         MASTER-SAAO | P\\ |   540 | 16.2 |  Coadd 
    5224 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    5224 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    5435 |         MASTER-SAAO | P\\ |   180 | 16.2 |        
    7955 |         MASTER-SAAO | P\\ |  5220 | 16.7 |  Coadd 
    5435 |         MASTER-SAAO |  P/ |   180 | 16.1 |        
    5647 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    5647 |         MASTER-SAAO | P\\ |   180 | 16.3 |        
    5827 |         MASTER-SAAO |  P/ |   540 | 16.4 |  Coadd 
    5827 |         MASTER-SAAO | P\\ |   540 | 16.5 |  Coadd 
    5859 |         MASTER-SAAO | P\\ |   180 | 16.2 |        
    5859 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6069 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6069 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    6280 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6460 |         MASTER-SAAO | P\\ |   540 | 16.6 |  Coadd 
    6280 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6460 |         MASTER-SAAO |  P/ |   540 | 16.4 |  Coadd 
    6491 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    7301 |         MASTER-SAAO | P\\ |  1800 | 16.7 |  Coadd 
    6491 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    7301 |         MASTER-SAAO |  P/ |  1800 | 16.7 |  Coadd 
    6701 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6701 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6912 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    7092 |         MASTER-SAAO | P\\ |   540 | 16.6 |  Coadd 
    6912 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    7092 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    7123 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7123 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7335 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
    7335 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7545 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
    7725 |         MASTER-SAAO | P\\ |   540 | 16.7 |  Coadd 
    7545 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    7725 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    7756 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7756 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7967 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7967 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    8179 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    8359 |         MASTER-SAAO | P\\ |   540 | 16.7 |  Coadd 
    8179 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    8359 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    8389 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    8389 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    8600 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9410 |         MASTER-SAAO | P\\ |  1800 | 16.9 |  Coadd 
    8600 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    9410 |         MASTER-SAAO |  P/ |  1800 | 16.6 |  Coadd 
    8799 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
    8979 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
    8799 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    8979 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
    9010 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9010 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    9221 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9221 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    9421 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9601 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
    9421 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    9601 |         MASTER-SAAO |  P/ |   540 | 16.4 |  Coadd 
    9632 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9632 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    9844 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
    9844 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   10054 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   10234 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
   10054 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   10234 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
   10265 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
   10265 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   10464 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   10464 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   10676 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   10856 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
   11486 |         MASTER-SAAO | P\\ |  1800 | 17.0 |  Coadd 
   10676 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   10856 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
   11486 |         MASTER-SAAO |  P/ |  1800 | 16.8 |  Coadd 
   10887 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
   10887 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
   11098 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   11098 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   11309 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
   11489 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
   11309 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   11489 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
   11520 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   11520 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   11731 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   11731 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   11941 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   12121 |         MASTER-SAAO | P\\ |   540 | 16.9 |  Coadd 
   11941 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
   12121 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
   12154 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   12154 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   12365 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   12365 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   12575 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   12755 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
   12575 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   12755 |         MASTER-SAAO |  P/ |   540 | 16.8 |  Coadd 
   12787 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   13597 |         MASTER-SAAO | P\\ |  1800 | 17.0 |  Coadd 
   12787 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   13597 |         MASTER-SAAO |  P/ |  1800 | 17.0 |  Coadd 
   12997 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   12997 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   13197 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   13377 |         MASTER-SAAO | P\\ |   540 | 16.9 |  Coadd 
   13197 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   13377 |         MASTER-SAAO |  P/ |   540 | 16.9 |  Coadd 
   13407 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   13407 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   13618 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
   13618 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   13829 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
   14009 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   13829 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   14009 |         MASTER-SAAO |  P/ |   540 | 16.9 |  Coadd 
   14040 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   14040 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   14250 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
   14250 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   14461 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
   14641 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   14461 |         MASTER-SAAO |  P/ |   180 | 16.1 |        
   14641 |         MASTER-SAAO |  P/ |   540 | 16.8 |  Coadd 
   14671 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   14671 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   14882 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   15692 |         MASTER-SAAO | P\\ |  1800 | 17.3 |  Coadd 
   14882 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   15692 |         MASTER-SAAO |  P/ |  1800 | 17.0 |  Coadd 
   15093 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   15273 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   15093 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   15273 |         MASTER-SAAO |  P/ |   540 | 16.9 |  Coadd 
   15304 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   15304 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   15515 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   15515 |         MASTER-SAAO |  P/ |   180 | 16.8 |        
   15715 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   15895 |         MASTER-SAAO | P\\ |   540 | 17.1 |  Coadd 
   15715 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   15895 |         MASTER-SAAO |  P/ |   540 | 17.0 |  Coadd 
   15925 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   15925 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   16131 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   16131 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   16342 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   16522 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   16342 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   16522 |         MASTER-SAAO |  P/ |   540 | 17.0 |  Coadd 
   16553 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   16553 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   16764 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   16764 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   16974 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   17154 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   17784 |         MASTER-SAAO | P\\ |  1800 | 17.0 |  Coadd 
   16974 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   17154 |         MASTER-SAAO |  P/ |   540 | 16.9 |  Coadd 
   17185 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   17185 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   17396 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   17396 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   17607 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   17787 |         MASTER-SAAO | P\\ |   540 | 17.1 |  Coadd 
   17607 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   17787 |         MASTER-SAAO |  P/ |   540 | 17.0 |  Coadd 
   17818 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   17818 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   18028 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   18028 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   18239 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   18419 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   18239 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   18449 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   18449 |         MASTER-SAAO |  P/ |   180 | 16.8 |        
   18659 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   18659 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   18839 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   19469 |         MASTER-SAAO |  P/ |  1800 | 17.4 |  Coadd 
   18871 |         MASTER-SAAO | P\\ |   180 | 17.3 |        
   19051 |         MASTER-SAAO | P\\ |   540 | 17.4 |  Coadd 
   18871 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   19083 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   19893 |         MASTER-SAAO | P\\ |  1800 | 17.4 |  Coadd 
   19083 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   19293 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   19293 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   19473 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   19503 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   19683 |         MASTER-SAAO | P\\ |   540 | 17.3 |  Coadd 
   19503 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   19703 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   19703 |         MASTER-SAAO |  P/ |   180 | 16.9 |        
   19915 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   19915 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   20095 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   20126 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   20306 |         MASTER-SAAO | P\\ |   540 | 17.3 |  Coadd 
   20126 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   20336 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   20336 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   20547 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   20547 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   20727 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   20758 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   20938 |         MASTER-SAAO | P\\ |   540 | 17.3 |  Coadd 
   20758 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   21568 |         MASTER-SAAO |  P/ |  1800 | 17.4 |  Coadd 
   20970 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   20970 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   21181 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   21181 |         MASTER-SAAO |  P/ |   180 | 16.9 |        
   21361 |         MASTER-SAAO |  P/ |   540 | 17.2 |  Coadd 
   21392 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   21572 |         MASTER-SAAO | P\\ |   540 | 17.3 |  Coadd 
   21392 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   21603 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   21603 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   21814 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   21814 |         MASTER-SAAO |  P/ |   180 | 16.8 |        
   21994 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   22025 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   22025 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   22205 |         MASTER-SAAO | P\\ |   540 | 17.4 |  Coadd 
   22235 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   22235 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   22435 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   22435 |         MASTER-SAAO |  P/ |   180 | 16.9 |        
   22615 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   22646 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   22826 |         MASTER-SAAO | P\\ |   540 | 18.3 |  Coadd 
   22646 |         MASTER-SAAO |  P/ |   180 | 17.1 |        
   22858 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   22858 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   23668 |         MASTER-SAAO |  P/ |  1800 | 19.0 |  Coadd 
   23317 |         MASTER-SAAO |   C |   180 | 18.4 |        
   23317 |         MASTER-SAAO |   C |   180 | 18.1 |        
   23497 |         MASTER-SAAO |   C |   540 | 18.6 |  Coadd 
   23517 |         MASTER-SAAO |   C |   180 | 18.4 |        
   23697 |         MASTER-SAAO |   C |   540 | 18.9 |  Coadd 
   24327 |         MASTER-SAAO |   C |  1800 | 19.1 |  Coadd 
   23517 |         MASTER-SAAO |   C |   180 | 18.1 |        
   23728 |         MASTER-SAAO |   C |   180 | 18.2 |        
   23728 |         MASTER-SAAO |   C |   180 | 18.0 |        
   23939 |         MASTER-SAAO |   C |   180 | 18.4 |        
   23939 |         MASTER-SAAO |   C |   180 | 18.2 |        
   24119 |         MASTER-SAAO |   C |   540 | 18.7 |  Coadd 
   24151 |         MASTER-SAAO |   C |   180 | 18.4 |        
   24331 |         MASTER-SAAO |   C |   540 | 18.8 |  Coadd 
   24151 |         MASTER-SAAO |   C |   180 | 18.2 |        
   24364 |         MASTER-SAAO |   C |   180 | 18.4 |        
   24364 |         MASTER-SAAO |   C |   180 | 18.2 |        
   24575 |         MASTER-SAAO |   C |   180 | 18.1 |        
   24575 |         MASTER-SAAO |   C |   180 | 17.9 |        
   24755 |         MASTER-SAAO |   C |   540 | 18.5 |  Coadd 
   24786 |         MASTER-SAAO |   C |   180 | 18.1 |        
   24786 |         MASTER-SAAO |   C |   180 | 18.4 |        
   24966 |         MASTER-SAAO |   C |   540 | 18.8 |  Coadd 
   24998 |         MASTER-SAAO |   C |   180 | 18.4 |        
   24998 |         MASTER-SAAO |   C |   180 | 18.1 |        
   25209 |         MASTER-SAAO |   C |   180 | 18.2 |        
   25209 |         MASTER-SAAO |   C |   180 | 18.0 |        
   25389 |         MASTER-SAAO |   C |   540 | 18.6 |  Coadd 
   25420 |         MASTER-SAAO |   C |   180 | 18.2 |        
   25420 |         MASTER-SAAO |   C |   180 | 18.4 |        
   25600 |         MASTER-SAAO |   C |   540 | 18.9 |  Coadd 
   25631 |         MASTER-SAAO |   C |   180 | 18.4 |        
   25631 |         MASTER-SAAO |   C |   180 | 18.2 |        
   25843 |         MASTER-SAAO |   C |   180 | 18.3 |        
   25843 |         MASTER-SAAO |   C |   180 | 18.2 |        
   26226 |         MASTER-SAAO |   C |   180 | 18.4 |        
   26226 |         MASTER-SAAO |   C |   180 | 18.2 |        
   27042 |         MASTER-SAAO |   C |   180 | 18.1 |        
   27042 |         MASTER-SAAO |   C |   180 | 18.0 |        
   27333 |         MASTER-SAAO |   C |   180 | 18.3 |        
   27333 |         MASTER-SAAO |   C |   180 | 18.2 |        
   28087 |         MASTER-SAAO |   C |    60 | 18.0 |        
   28087 |         MASTER-SAAO |   C |    60 | 18.1 |        
   28317 |         MASTER-SAAO |   C |   180 | 16.4 |        
   28317 |         MASTER-SAAO |   C |   180 | 17.1 |        
   28608 |         MASTER-SAAO |   C |   180 | 17.0 |        
   28608 |         MASTER-SAAO |   C |   180 | 16.4 |        
   29264 |         MASTER-SAAO |   C |    60 | 17.1 |        
   29264 |         MASTER-SAAO |   C |    60 | 16.8 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 8020
TYPE = 35
DAYS = 0.5


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 230405B ( K. L. Page et al., GCN 33571) errorbox  4283 sec after notice time and 4302 sec after trigger time at 2023-04-05 21:09:46 UT, with upper limit up to  19.1 mag. The observations began at zenith distance = 73 deg. The sun  altitude  is -56.4 deg. 

The galactic latitude b = -13 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2208901

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

    4393 |         MASTER-SAAO | P\\ |   180 | 16.0 |        
    4573 |         MASTER-SAAO | P\\ |   540 | 16.1 |  Coadd 
    5203 |         MASTER-SAAO | P\\ |  1800 | 16.4 |  Coadd 
    4393 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4573 |         MASTER-SAAO |  P/ |   540 | 16.2 |  Coadd 
    5203 |         MASTER-SAAO |  P/ |  1800 | 16.4 |  Coadd 
    4592 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    4592 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4803 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4803 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    5014 |         MASTER-SAAO |  P/ |   180 | 16.1 |        
    5194 |         MASTER-SAAO |  P/ |   540 | 16.2 |  Coadd 
    5014 |         MASTER-SAAO | P\\ |   180 | 16.1 |        
    5194 |         MASTER-SAAO | P\\ |   540 | 16.2 |  Coadd 
    5224 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    5224 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    5435 |         MASTER-SAAO | P\\ |   180 | 16.2 |        
    5435 |         MASTER-SAAO |  P/ |   180 | 16.1 |        
    5647 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    5647 |         MASTER-SAAO | P\\ |   180 | 16.3 |        
    5827 |         MASTER-SAAO |  P/ |   540 | 16.4 |  Coadd 
    5827 |         MASTER-SAAO | P\\ |   540 | 16.5 |  Coadd 
    5859 |         MASTER-SAAO | P\\ |   180 | 16.2 |        
    5859 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6069 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6069 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    6280 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6460 |         MASTER-SAAO | P\\ |   540 | 16.6 |  Coadd 
    6280 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6460 |         MASTER-SAAO |  P/ |   540 | 16.4 |  Coadd 
    6491 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    7301 |         MASTER-SAAO | P\\ |  1800 | 16.7 |  Coadd 
    6491 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    7301 |         MASTER-SAAO |  P/ |  1800 | 16.7 |  Coadd 
    6701 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6701 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6912 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    7092 |         MASTER-SAAO | P\\ |   540 | 16.6 |  Coadd 
    6912 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    7092 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    7123 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7123 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7335 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
    7335 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7545 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
    7725 |         MASTER-SAAO | P\\ |   540 | 16.7 |  Coadd 
    7545 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    7725 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    7756 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7756 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7967 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7967 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    8179 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    8359 |         MASTER-SAAO | P\\ |   540 | 16.7 |  Coadd 
    8179 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    8359 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    8389 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    8389 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    8600 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9410 |         MASTER-SAAO | P\\ |  1800 | 16.9 |  Coadd 
    8600 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    9410 |         MASTER-SAAO |  P/ |  1800 | 16.6 |  Coadd 
    8799 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
    8979 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
    8799 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    8979 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
    9010 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9010 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    9221 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9221 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    9421 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9601 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
    9421 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    9601 |         MASTER-SAAO |  P/ |   540 | 16.4 |  Coadd 
    9632 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9632 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    9844 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
    9844 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   10054 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   10234 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
   10054 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   10234 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
   10265 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
   10265 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   10464 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   10464 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   10676 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   10856 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
   11486 |         MASTER-SAAO | P\\ |  1800 | 17.0 |  Coadd 
   10676 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   10856 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
   11486 |         MASTER-SAAO |  P/ |  1800 | 16.8 |  Coadd 
   10887 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
   10887 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
   11098 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   11098 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   11309 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
   11489 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
   11309 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   11489 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
   11520 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   11520 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   11731 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   11731 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   11941 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   12121 |         MASTER-SAAO | P\\ |   540 | 16.9 |  Coadd 
   11941 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
   12121 |         MASTER-SAAO |  P/ |   540 | 16.7 |  Coadd 
   12154 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   12154 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   12365 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   12365 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   12575 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   12755 |         MASTER-SAAO | P\\ |   540 | 16.8 |  Coadd 
   12575 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   12755 |         MASTER-SAAO |  P/ |   540 | 16.8 |  Coadd 
   12787 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   13597 |         MASTER-SAAO | P\\ |  1800 | 17.0 |  Coadd 
   12787 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   13597 |         MASTER-SAAO |  P/ |  1800 | 17.0 |  Coadd 
   12997 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
   12997 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   13197 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   13377 |         MASTER-SAAO | P\\ |   540 | 16.9 |  Coadd 
   13197 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   13377 |         MASTER-SAAO |  P/ |   540 | 16.9 |  Coadd 
   13407 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   13407 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   13618 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
   13618 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   13829 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
   14009 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   13829 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   14009 |         MASTER-SAAO |  P/ |   540 | 16.9 |  Coadd 
   14040 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   14040 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   14250 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
   14250 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   14461 |         MASTER-SAAO | P\\ |   180 | 16.7 |        
   14641 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   14461 |         MASTER-SAAO |  P/ |   180 | 16.1 |        
   14641 |         MASTER-SAAO |  P/ |   540 | 16.8 |  Coadd 
   14671 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   14671 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   14882 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   15692 |         MASTER-SAAO | P\\ |  1800 | 17.3 |  Coadd 
   14882 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   15692 |         MASTER-SAAO |  P/ |  1800 | 17.0 |  Coadd 
   15093 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   15273 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   15093 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   15273 |         MASTER-SAAO |  P/ |   540 | 16.9 |  Coadd 
   15304 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   15304 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   15515 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   15515 |         MASTER-SAAO |  P/ |   180 | 16.8 |        
   15715 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   15895 |         MASTER-SAAO | P\\ |   540 | 17.1 |  Coadd 
   15715 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   15895 |         MASTER-SAAO |  P/ |   540 | 17.0 |  Coadd 
   15925 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   15925 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   16131 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   16131 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   16342 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   16522 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   16342 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   16522 |         MASTER-SAAO |  P/ |   540 | 17.0 |  Coadd 
   16553 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   16553 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   16764 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   16764 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   16974 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   17154 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   17784 |         MASTER-SAAO | P\\ |  1800 | 17.0 |  Coadd 
   16974 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
   17154 |         MASTER-SAAO |  P/ |   540 | 16.9 |  Coadd 
   17185 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   17185 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   17396 |         MASTER-SAAO | P\\ |   180 | 16.8 |        
   17396 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
   17607 |         MASTER-SAAO | P\\ |   180 | 16.9 |        
   17787 |         MASTER-SAAO | P\\ |   540 | 17.1 |  Coadd 
   17607 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   17787 |         MASTER-SAAO |  P/ |   540 | 17.0 |  Coadd 
   17818 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   17818 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   18028 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   18028 |         MASTER-SAAO |  P/ |   180 | 16.6 |        
   18239 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   18419 |         MASTER-SAAO | P\\ |   540 | 17.0 |  Coadd 
   18239 |         MASTER-SAAO |  P/ |   180 | 16.7 |        
   18449 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   18449 |         MASTER-SAAO |  P/ |   180 | 16.8 |        
   18659 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   18659 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   18839 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   19469 |         MASTER-SAAO |  P/ |  1800 | 17.4 |  Coadd 
   18871 |         MASTER-SAAO | P\\ |   180 | 17.3 |        
   19051 |         MASTER-SAAO | P\\ |   540 | 17.4 |  Coadd 
   18871 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   19083 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   19893 |         MASTER-SAAO | P\\ |  1800 | 17.4 |  Coadd 
   19083 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   19293 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   19293 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   19473 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   19503 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   19683 |         MASTER-SAAO | P\\ |   540 | 17.3 |  Coadd 
   19503 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   19703 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   19703 |         MASTER-SAAO |  P/ |   180 | 16.9 |        
   19915 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   19915 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   20095 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   20126 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   20306 |         MASTER-SAAO | P\\ |   540 | 17.3 |  Coadd 
   20126 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   20336 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   20336 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   20547 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   20547 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   20727 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   20758 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   20938 |         MASTER-SAAO | P\\ |   540 | 17.3 |  Coadd 
   20758 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   21568 |         MASTER-SAAO |  P/ |  1800 | 17.4 |  Coadd 
   20970 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   20970 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   21181 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   21181 |         MASTER-SAAO |  P/ |   180 | 16.9 |        
   21361 |         MASTER-SAAO |  P/ |   540 | 17.2 |  Coadd 
   21392 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   21572 |         MASTER-SAAO | P\\ |   540 | 17.3 |  Coadd 
   21392 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   21603 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   21603 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   21814 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   21814 |         MASTER-SAAO |  P/ |   180 | 16.8 |        
   21994 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   22025 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   22025 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   22205 |         MASTER-SAAO | P\\ |   540 | 17.4 |  Coadd 
   22235 |         MASTER-SAAO | P\\ |   180 | 17.2 |        
   22235 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   22435 |         MASTER-SAAO | P\\ |   180 | 17.0 |        
   22435 |         MASTER-SAAO |  P/ |   180 | 16.9 |        
   22615 |         MASTER-SAAO |  P/ |   540 | 17.3 |  Coadd 
   22646 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   22826 |         MASTER-SAAO | P\\ |   540 | 18.3 |  Coadd 
   22646 |         MASTER-SAAO |  P/ |   180 | 17.1 |        
   22858 |         MASTER-SAAO | P\\ |   180 | 17.1 |        
   22858 |         MASTER-SAAO |  P/ |   180 | 17.0 |        
   23668 |         MASTER-SAAO |  P/ |  1800 | 19.0 |  Coadd 
   23317 |         MASTER-SAAO |   C |   180 | 18.4 |        
   23317 |         MASTER-SAAO |   C |   180 | 18.1 |        
   23497 |         MASTER-SAAO |   C |   540 | 18.6 |  Coadd 
   23517 |         MASTER-SAAO |   C |   180 | 18.4 |        
   23697 |         MASTER-SAAO |   C |   540 | 18.9 |  Coadd 
   24327 |         MASTER-SAAO |   C |  1800 | 19.1 |  Coadd 
   23517 |         MASTER-SAAO |   C |   180 | 18.1 |        
   23728 |         MASTER-SAAO |   C |   180 | 18.2 |        
   23728 |         MASTER-SAAO |   C |   180 | 18.0 |        
   23939 |         MASTER-SAAO |   C |   180 | 18.4 |        
   23939 |         MASTER-SAAO |   C |   180 | 18.2 |        
   24119 |         MASTER-SAAO |   C |   540 | 18.7 |  Coadd 
   24151 |         MASTER-SAAO |   C |   180 | 18.4 |        
   24331 |         MASTER-SAAO |   C |   540 | 18.8 |  Coadd 
   24151 |         MASTER-SAAO |   C |   180 | 18.2 |        
   24364 |         MASTER-SAAO |   C |   180 | 18.2 |        
   24364 |         MASTER-SAAO |   C |   180 | 18.4 |        
   24575 |         MASTER-SAAO |   C |   180 | 18.1 |        
   24575 |         MASTER-SAAO |   C |   180 | 17.9 |        
   24755 |         MASTER-SAAO |   C |   540 | 18.5 |  Coadd 
   24786 |         MASTER-SAAO |   C |   180 | 18.1 |        
   24786 |         MASTER-SAAO |   C |   180 | 18.4 |        
   24966 |         MASTER-SAAO |   C |   540 | 18.8 |  Coadd 
   24998 |         MASTER-SAAO |   C |   180 | 18.4 |        
   24998 |         MASTER-SAAO |   C |   180 | 18.1 |        
   25209 |         MASTER-SAAO |   C |   180 | 18.2 |        
   25209 |         MASTER-SAAO |   C |   180 | 18.0 |        
   25389 |         MASTER-SAAO |   C |   540 | 18.6 |  Coadd 
   25420 |         MASTER-SAAO |   C |   180 | 18.2 |        
   25420 |         MASTER-SAAO |   C |   180 | 18.4 |        
   25600 |         MASTER-SAAO |   C |   540 | 18.9 |  Coadd 
   25631 |         MASTER-SAAO |   C |   180 | 18.4 |        
   25631 |         MASTER-SAAO |   C |   180 | 18.2 |        
   25843 |         MASTER-SAAO |   C |   180 | 18.3 |        
   25843 |         MASTER-SAAO |   C |   180 | 18.2 |        
   26226 |         MASTER-SAAO |   C |   180 | 18.4 |        
   26226 |         MASTER-SAAO |   C |   180 | 18.2 |        
   27042 |         MASTER-SAAO |   C |   180 | 18.1 |        
   27042 |         MASTER-SAAO |   C |   180 | 18.0 |        
   27333 |         MASTER-SAAO |   C |   180 | 18.3 |        
   27333 |         MASTER-SAAO |   C |   180 | 18.2 |        
   28087 |         MASTER-SAAO |   C |    60 | 18.0 |        
   28087 |         MASTER-SAAO |   C |    60 | 18.1 |        
   28317 |         MASTER-SAAO |   C |   180 | 16.4 |        
   28317 |         MASTER-SAAO |   C |   180 | 17.1 |        
   28608 |         MASTER-SAAO |   C |   180 | 17.0 |        
   28608 |         MASTER-SAAO |   C |   180 | 16.4 |        
   29264 |         MASTER-SAAO |   C |    60 | 17.1 |        
   29264 |         MASTER-SAAO |   C |    60 | 16.8 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 8019
TYPE = 35
DAYS = 0.1


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 230405B ( K. L. Page et al., GCN 33571) errorbox  4283 sec after notice time and 4302 sec after trigger time at 2023-04-05 21:09:46 UT, with upper limit up to  16.9 mag. The observations began at zenith distance = 73 deg. The sun  altitude  is -56.4 deg. 

The galactic latitude b = -13 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2208901

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

    4393 |         MASTER-SAAO | P\\ |   180 | 16.0 |        
    4573 |         MASTER-SAAO | P\\ |   540 | 16.1 |  Coadd 
    5203 |         MASTER-SAAO | P\\ |  1800 | 16.4 |  Coadd 
    4393 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4573 |         MASTER-SAAO |  P/ |   540 | 16.2 |  Coadd 
    5203 |         MASTER-SAAO |  P/ |  1800 | 16.4 |  Coadd 
    4592 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    4592 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4803 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    4803 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    5014 |         MASTER-SAAO |  P/ |   180 | 16.1 |        
    5194 |         MASTER-SAAO |  P/ |   540 | 16.2 |  Coadd 
    5014 |         MASTER-SAAO | P\\ |   180 | 16.1 |        
    5194 |         MASTER-SAAO | P\\ |   540 | 16.2 |  Coadd 
    5224 |         MASTER-SAAO | P\\ |   180 | 15.9 |        
    5224 |         MASTER-SAAO |  P/ |   180 | 16.0 |        
    5435 |         MASTER-SAAO | P\\ |   180 | 16.2 |        
    5435 |         MASTER-SAAO |  P/ |   180 | 16.1 |        
    5647 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    5647 |         MASTER-SAAO | P\\ |   180 | 16.3 |        
    5827 |         MASTER-SAAO |  P/ |   540 | 16.4 |  Coadd 
    5827 |         MASTER-SAAO | P\\ |   540 | 16.5 |  Coadd 
    5859 |         MASTER-SAAO | P\\ |   180 | 16.2 |        
    5859 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6069 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6069 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    6280 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6460 |         MASTER-SAAO | P\\ |   540 | 16.6 |  Coadd 
    6280 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6460 |         MASTER-SAAO |  P/ |   540 | 16.4 |  Coadd 
    6491 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    7301 |         MASTER-SAAO | P\\ |  1800 | 16.7 |  Coadd 
    6491 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    7301 |         MASTER-SAAO |  P/ |  1800 | 16.7 |  Coadd 
    6701 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    6701 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    6912 |         MASTER-SAAO | P\\ |   180 | 16.4 |        
    7092 |         MASTER-SAAO | P\\ |   540 | 16.6 |  Coadd 
    6912 |         MASTER-SAAO |  P/ |   180 | 16.2 |        
    7092 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    7123 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7123 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7335 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
    7335 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7545 |         MASTER-SAAO | P\\ |   180 | 16.5 |        
    7725 |         MASTER-SAAO | P\\ |   540 | 16.7 |  Coadd 
    7545 |         MASTER-SAAO |  P/ |   180 | 16.3 |        
    7725 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    7756 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7756 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    7967 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    7967 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    8179 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    8359 |         MASTER-SAAO | P\\ |   540 | 16.7 |  Coadd 
    8179 |         MASTER-SAAO |  P/ |   180 | 16.5 |        
    8359 |         MASTER-SAAO |  P/ |   540 | 16.6 |  Coadd 
    8389 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    8389 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    8600 |         MASTER-SAAO | P\\ |   180 | 16.6 |        
    9410 |         MASTER-SAAO | P\\ |  1800 | 16.9 |  Coadd 
    8600 |         MASTER-SAAO |  P/ |   180 | 16.4 |        
    9410 |         MASTER-SAAO |  P/ |  1800 | 16.6 |  Coadd 


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



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

  ID = 8018
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 230405B ( K. L. Page et al., GCN 33571) errorbox  4283 sec after notice time and 4302 sec after trigger time at 2023-04-05 21:09:46 UT, with upper limit up to  16.0 mag. The observations began at zenith distance = 73 deg. The sun  altitude  is -56.4 deg. 

The galactic latitude b = -13 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2208901

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

    4393 |         MASTER-SAAO | P\\ |   180 | 16.0 |        
    4393 |         MASTER-SAAO |  P/ |   180 | 16.0 |        


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



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

  ID = 8017
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 230405B ( K. L. Page et al., GCN 33571) errorbox  4283 sec after notice time and 4302 sec after trigger time at 2023-04-05 21:09:46 UT, with upper limit up to  16.0 mag. The observations began at zenith distance = 73 deg. The sun  altitude  is -56.4 deg. 

The galactic latitude b = -13 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2208901

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

    4393 |         MASTER-SAAO | P\\ |   180 | 16.0 |        
    4393 |         MASTER-SAAO |  P/ |   180 | 16.0 |        


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



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

  ID = 8016
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 230405B ( K. L. Page et al., GCN 33571) errorbox  4283 sec after notice time and 4302 sec after trigger time at 2023-04-05 21:09:46 UT, with upper limit up to  16.0 mag. The observations began at zenith distance = 73 deg. The sun  altitude  is -56.4 deg. 

The galactic latitude b = -13 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2208901

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

    4393 |         MASTER-SAAO | P\\ |   180 | 16.0 |        
    4393 |         MASTER-SAAO |  P/ |   180 | 16.0 |        


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

MASTER, 2002-2024