MASTER Net MASTER Database: LIGO GRB240421.22 alert (last error box)

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 GRB240421.22
Type 2 (last error box)
Trigger time 2024-04-21 05:21:59.9
Notice time 2024-04-21 05:24:14.475421
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
[%] 51.9 34.7 35.6
2024-05-05 05:21:59 336.0 336.0 688.3

Map with WFC

Discoveries in this field
No discoveries yet!

Synchronous WFC images
datetime coord2000 observatory camera links
2024-04-21 05:21:56.624 00h 00m 00.00s +00d 00m 00.0s SAAO 111341 Database SAAO
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-'2024-04-21 05:21:59.9')<'10 minutes'::interval order by gn,seq desc,errorbox asc;
trigger notice notice+1hr now

2024-04-21 05:21:59 (JD 2460421.723600)

Siderial time 21.859609 h

Ra 17:42:37.30 Dec -16:04:36.50
(265.655417d, -16.076806d)

Rise 2024-04-21 23:46:03

Transit 2024-04-21 04:13:42

Set 2024-04-21 08:37:25

Amur

Object: Altitude: -49.06 Azimuth: 136.68

Sun: Altitude: 45.01 Azimuth: 41.56

Moon: Altitude: -19.85 Azimuth: 242.48

Tunka

Object: Altitude: -35.51 Azimuth: 110.91

Sun: Altitude: 49.96 Azimuth: 6.43

Moon: Altitude: -30.73 Azimuth: 218.21

Kislovodsk

Object: Altitude: 4.48 Azimuth: 62.64

Sun: Altitude: 32.33 Azimuth: 285.51

Moon: Altitude: -38.62 Azimuth: 142.48

Tavrida

Object: Altitude: 9.23 Azimuth: 56.23

Sun: Altitude: 26.17 Azimuth: 279.37

Moon: Altitude: -33.82 Azimuth: 133.70

SAAO

Object: Altitude: 45.87 Azimuth: 100.53

Sun: Altitude: 3.48 Azimuth: 253.53

Moon: Altitude: -33.36 Azimuth: 66.75

IAC

Object: Altitude: 44.93 Azimuth: 11.04

Sun: Altitude: -15.72 Azimuth: 246.72

Moon: Altitude: -1.81 Azimuth: 92.02

Argentina

Object: Altitude: 46.58 Azimuth: 259.56

Sun: Altitude: -67.33 Azimuth: 328.64

Moon: Altitude: 40.17 Azimuth: 123.24

Mexico

Object: Altitude: -4.71 Azimuth: 285.95

Sun: Altitude: -38.68 Azimuth: 142.26

Moon: Altitude: 59.84 Azimuth: 357.36

Ural

Object: Altitude: -10.32 Azimuth: 76.32

Sun: Altitude: 35.82 Azimuth: 310.15

Moon: Altitude: -31.32 Azimuth: 166.62

Vostryakovo

Object: Altitude: 1.42 Azimuth: 58.43

Sun: Altitude: 26.05 Azimuth: 287.66

Moon: Altitude: -27.55 Azimuth: 141.95

Gal. latitude: 6.672881 Gal. longitude: 10.994906

Dist. to Sun: 125.143932

Dist. to Moon: 84.911745

Moon coord.: (181.218716 d, 0.921119 d)

Sun coord.: (29.120579 d, 11.918546 d)

Lunar disk: 0.930992

Lunar phase: 30.459967

Lunar bright limb: 295.703785

No SN in this field

2024-04-21 05:24:14 (JD 2460421.725162)

Siderial time 21.897212 h

Ra 17:42:37.30 Dec -16:04:36.50
(265.655417d, -16.076806d)

Rise 2024-04-21 23:46:03

Transit 2024-04-21 04:13:42

Set 2024-04-21 08:37:25

Amur

Object: Altitude: -49.30 Azimuth: 137.42

Sun: Altitude: 44.77 Azimuth: 42.25

Moon: Altitude: -19.55 Azimuth: 242.97

Tunka

Object: Altitude: -35.84 Azimuth: 111.44

Sun: Altitude: 49.92 Azimuth: 7.28

Moon: Altitude: -30.52 Azimuth: 218.80

Kislovodsk

Object: Altitude: 4.12 Azimuth: 63.05

Sun: Altitude: 32.72 Azimuth: 285.97

Moon: Altitude: -38.87 Azimuth: 143.11

Tavrida

Object: Altitude: 8.90 Azimuth: 56.66

Sun: Altitude: 26.56 Azimuth: 279.80

Moon: Altitude: -34.10 Azimuth: 134.26

SAAO

Object: Altitude: 45.40 Azimuth: 100.14

Sun: Altitude: 3.94 Azimuth: 253.22

Moon: Altitude: -33.78 Azimuth: 66.33

IAC

Object: Altitude: 44.84 Azimuth: 11.79

Sun: Altitude: -15.27 Azimuth: 247.04

Moon: Altitude: -2.29 Azimuth: 92.27

Argentina

Object: Altitude: 47.05 Azimuth: 259.17

Sun: Altitude: -67.08 Azimuth: 327.38

Moon: Altitude: 39.78 Azimuth: 122.73

Mexico

Object: Altitude: -4.24 Azimuth: 286.23

Sun: Altitude: -38.97 Azimuth: 142.86

Moon: Altitude: 59.85 Azimuth: 358.45

Ural

Object: Altitude: -10.62 Azimuth: 76.78

Sun: Altitude: 36.05 Azimuth: 310.77

Moon: Altitude: -31.40 Azimuth: 167.26

Vostryakovo

Object: Altitude: 1.15 Azimuth: 58.90

Sun: Altitude: 26.35 Azimuth: 288.18

Moon: Altitude: -27.74 Azimuth: 142.52

Gal. latitude: 6.672881 Gal. longitude: 10.994906

Dist. to Sun: 125.145438

Dist. to Moon: 84.893605

Moon coord.: (181.235027 d, 0.912246 d)

Sun coord.: (29.122040 d, 11.919076 d)

Lunar disk: 0.931067

Lunar phase: 30.442990

Lunar bright limb: 295.702346

No SN in this field

2024-04-21 06:24:14 (JD 2460421.766829)

Siderial time 22.899950 h

Ra 17:42:37.30 Dec -16:04:36.50
(265.655417d, -16.076806d)

Rise 2024-04-21 23:46:03

Transit 2024-04-21 04:13:42

Set 2024-04-21 08:37:25

Amur

Object: Altitude: -54.35 Azimuth: 159.45

Sun: Altitude: 37.37 Azimuth: 59.13

Moon: Altitude: -11.04 Azimuth: 255.29

Tunka

Object: Altitude: -43.94 Azimuth: 127.09

Sun: Altitude: 47.03 Azimuth: 29.07

Moon: Altitude: -24.22 Azimuth: 233.66

Kislovodsk

Object: Altitude: -5.96 Azimuth: 73.41

Sun: Altitude: 42.72 Azimuth: 299.62

Moon: Altitude: -44.02 Azimuth: 161.39

Tavrida

Object: Altitude: -0.54 Azimuth: 67.64

Sun: Altitude: 36.81 Azimuth: 292.19

Moon: Altitude: -40.65 Azimuth: 150.74

SAAO

Object: Altitude: 32.77 Azimuth: 91.04

Sun: Altitude: 15.73 Azimuth: 244.34

Moon: Altitude: -44.29 Azimuth: 53.20

IAC

Object: Altitude: 40.04 Azimuth: 30.32

Sun: Altitude: -2.78 Azimuth: 254.86

Moon: Altitude: -15.19 Azimuth: 99.21

Argentina

Object: Altitude: 59.26 Azimuth: 246.10

Sun: Altitude: -57.91 Azimuth: 302.07

Moon: Altitude: 28.86 Azimuth: 110.95

Mexico

Object: Altitude: 7.85 Azimuth: 294.16

Sun: Altitude: -45.06 Azimuth: 160.90

Moon: Altitude: 56.92 Azimuth: 25.96

Ural

Object: Altitude: -18.73 Azimuth: 89.16

Sun: Altitude: 41.36 Azimuth: 328.35

Moon: Altitude: -32.21 Azimuth: 184.44

Vostryakovo

Object: Altitude: -6.59 Azimuth: 71.13

Sun: Altitude: 34.05 Azimuth: 302.67

Moon: Altitude: -32.05 Azimuth: 158.64

Gal. latitude: 6.672881 Gal. longitude: 10.994906

Dist. to Sun: 125.185581

Dist. to Moon: 84.409820

Moon coord.: (181.670044 d, 0.675571 d)

Sun coord.: (29.160985 d, 11.933203 d)

Lunar disk: 0.933055

Lunar phase: 29.990206

Lunar bright limb: 295.662305

No SN in this field

2025-05-12 07:23:00 (JD 2460807.807639)

Siderial time 1.246068 h

Ra 17:42:37.30 Dec -16:04:36.50
(265.655417d, -16.076806d)

Rise 2025-05-12 22:24:26

Transit 2025-05-13 02:48:09

Set 2025-05-12 07:15:48

Amur

Object: Altitude: -51.11 Azimuth: 216.55

Sun: Altitude: 33.20 Azimuth: 78.11

Moon: Altitude: -31.60 Azimuth: 264.84

Tunka

Object: Altitude: -54.25 Azimuth: 177.51

Sun: Altitude: 46.51 Azimuth: 52.53

Moon: Altitude: -45.80 Azimuth: 240.99

Kislovodsk

Object: Altitude: -31.11 Azimuth: 97.47

Sun: Altitude: 56.63 Azimuth: 312.05

Moon: Altitude: -61.70 Azimuth: 137.96

Tavrida

Object: Altitude: -24.96 Azimuth: 91.79

Sun: Altitude: 51.17 Azimuth: 302.14

Moon: Altitude: -56.52 Azimuth: 126.40

SAAO

Object: Altitude: 3.46 Azimuth: 73.13

Sun: Altitude: 22.27 Azimuth: 228.86

Moon: Altitude: -23.65 Azimuth: 42.62

IAC

Object: Altitude: 17.80 Azimuth: 59.79

Sun: Altitude: 13.18 Azimuth: 256.29

Moon: Altitude: -19.08 Azimuth: 76.13

Argentina

Object: Altitude: 73.33 Azimuth: 159.18

Sun: Altitude: -49.26 Azimuth: 279.12

Moon: Altitude: 45.68 Azimuth: 92.18

Mexico

Object: Altitude: 32.12 Azimuth: 319.44

Sun: Altitude: -40.78 Azimuth: 182.06

Moon: Altitude: 37.72 Azimuth: 8.58

Ural

Object: Altitude: -37.00 Azimuth: 121.64

Sun: Altitude: 50.59 Azimuth: 347.31

Moon: Altitude: -53.66 Azimuth: 175.53

Vostryakovo

Object: Altitude: -26.31 Azimuth: 99.93

Sun: Altitude: 46.30 Azimuth: 316.27

Moon: Altitude: -50.79 Azimuth: 142.06

Gal. latitude: 6.672881 Gal. longitude: 10.994906

Dist. to Sun: 145.010069

Dist. to Moon: 40.214127

Moon coord.: (223.442487 d, -20.758127 d)

Sun coord.: (49.050770 d, 18.138187 d)

Lunar disk: 0.997355

Lunar phase: 5.896469

Lunar bright limb: 244.910437

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

  ID = 9985
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 GRB 240421A ( Fermi GBM team, GCN 36204) errorbox  42622 sec after notice time and 42658 sec after trigger time at 2024-04-21 17:12:58 UT, with upper limit up to  16.7 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -13.9 deg. 

The galactic latitude b = -32 deg., longitude l = 313 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2430011

We obtain a following upper limits.  

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

   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (20h 50m 46.74s , -82d 18m 27.9s) |   C |    60 | 14.2 |        
   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (21h 03m 23.96s , -82d 31m 37.4s) |   C |    60 | 14.4 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 29m 07.64s , -78d 43m 31.0s) |   C |    60 | 14.5 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 20m 41.90s , -78d 30m 17.8s) |   C |    60 | 14.2 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 24m 07.82s , -84d 24m 28.5s) |   C |    60 | 16.7 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 07m 14.94s , -84d 11m 11.3s) |   C |    60 | 16.6 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (19h 08m 34.69s , -82d 29m 18.5s) |   C |    60 | 15.9 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (18h 55m 46.97s , -82d 15m 59.6s) |   C |    60 | 15.8 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 9998
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 GRB 240421A ( Fermi GBM team, GCN 36204) errorbox  42622 sec after notice time and 42658 sec after trigger time at 2024-04-21 17:12:58 UT, with upper limit up to  19.6 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -13.9 deg. 

The galactic latitude b = -32 deg., longitude l = 313 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2430000

We obtain a following upper limits.  

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

   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (20h 50m 46.74s , -82d 18m 27.9s) |   C |    60 | 14.2 |        
   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (21h 03m 23.96s , -82d 31m 37.4s) |   C |    60 | 14.4 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 29m 07.64s , -78d 43m 31.0s) |   C |    60 | 14.5 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 20m 41.90s , -78d 30m 17.8s) |   C |    60 | 14.2 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 24m 07.82s , -84d 24m 28.5s) |   C |    60 | 16.7 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 07m 14.94s , -84d 11m 11.3s) |   C |    60 | 16.6 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (19h 08m 34.69s , -82d 29m 18.5s) |   C |    60 | 15.9 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (18h 55m 46.97s , -82d 15m 59.6s) |   C |    60 | 15.8 |        
   43251 | 2024-04-21 17:22:20 |         MASTER-SAAO | (22h 00m 04.06s , -76d 48m 46.6s) |   C |    60 | 14.6 |        
   43251 | 2024-04-21 17:22:20 |         MASTER-SAAO | (21h 52m 57.74s , -76d 35m 35.3s) |   C |    60 | 14.4 |        
   43491 | 2024-04-21 17:26:20 |         MASTER-SAAO | (19h 47m 50.73s , -76d 48m 10.6s) |   C |    60 | 12.4 |        
   44103 | 2024-04-21 17:36:33 |         MASTER-SAAO | (21h 37m 45.89s , -78d 30m 58.6s) |   C |    60 | 12.3 |        
   44263 | 2024-04-21 17:39:13 |         MASTER-SAAO | (20h 24m 36.12s , -84d 24m 16.8s) |   C |    60 | 15.1 |        
   44263 | 2024-04-21 17:39:13 |         MASTER-SAAO | (20h 07m 30.98s , -84d 11m 04.0s) |   C |    60 | 15.0 |        
   44343 | 2024-04-21 17:40:33 |         MASTER-SAAO | (19h 08m 48.17s , -82d 31m 41.4s) |   C |    60 | 15.0 |        
   44343 | 2024-04-21 17:40:33 |         MASTER-SAAO | (18h 55m 48.73s , -82d 18m 26.9s) |   C |    60 | 14.8 |        
   44423 | 2024-04-21 17:41:52 |         MASTER-SAAO | (22h 00m 15.05s , -76d 48m 31.1s) |   C |    60 | 17.5 |        
   44423 | 2024-04-21 17:41:52 |         MASTER-SAAO | (21h 53m 05.05s , -76d 35m 23.4s) |   C |    60 | 17.5 |        
   44503 | 2024-04-21 17:43:12 |         MASTER-SAAO | (22h 58m 49.64s , -82d 30m 50.3s) |   C |    60 | 16.7 |        
   44503 | 2024-04-21 17:43:12 |         MASTER-SAAO | (22h 46m 19.25s , -82d 17m 54.5s) |   C |    60 | 17.0 |        
   45150 | 2024-04-21 17:53:59 |         MASTER-SAAO | (19h 48m 11.86s , -76d 49m 39.6s) |   C |    60 | 16.8 |        
   45150 | 2024-04-21 17:53:59 |         MASTER-SAAO | (19h 40m 44.69s , -76d 36m 38.8s) |   C |    60 | 16.7 |        
   45448 | 2024-04-21 17:58:57 |         MASTER-SAAO | (21h 28m 54.13s , -80d 37m 48.7s) |   C |    60 | 15.3 |        
   45448 | 2024-04-21 17:58:57 |         MASTER-SAAO | (21h 18m 40.09s , -80d 24m 43.3s) |   C |    60 | 15.6 |        
   45527 | 2024-04-21 18:00:17 |         MASTER-SAAO | (21h 04m 08.14s , -82d 32m 46.0s) |   C |    60 | 14.1 |        
   45527 | 2024-04-21 18:00:17 |         MASTER-SAAO | (20h 51m 15.04s , -82d 19m 38.3s) |   C |    60 | 14.1 |        
   45686 | 2024-04-21 18:02:56 |         MASTER-SAAO | (19h 56m 35.72s , -80d 37m 03.1s) |   C |    60 | 12.3 |        
   45686 | 2024-04-21 18:02:56 |         MASTER-SAAO | (19h 46m 13.06s , -80d 23m 51.9s) |   C |    60 | 12.5 |        
   45766 | 2024-04-21 18:04:15 |         MASTER-SAAO | (21h 46m 32.67s , -78d 44m 37.7s) |   C |    60 | 14.6 |        
   45766 | 2024-04-21 18:04:15 |         MASTER-SAAO | (21h 38m 02.95s , -78d 31m 31.2s) |   C |    60 | 14.2 |        
   45845 | 2024-04-21 18:05:35 |         MASTER-SAAO | (20h 54m 20.62s , -76d 49m 02.1s) |   C |    60 | 13.3 |        
   45845 | 2024-04-21 18:05:35 |         MASTER-SAAO | (20h 47m 01.31s , -76d 35m 51.8s) |   C |    60 | 13.1 |        
   45925 | 2024-04-21 18:06:54 |         MASTER-SAAO | (20h 25m 00.59s , -84d 25m 43.7s) |   C |    60 | 15.6 |        
   45925 | 2024-04-21 18:06:54 |         MASTER-SAAO | (20h 07m 42.39s , -84d 12m 31.1s) |   C |    60 | 15.4 |        
   46004 | 2024-04-21 18:08:14 |         MASTER-SAAO | (19h 08m 57.14s , -82d 30m 40.0s) |   C |    60 | 16.3 |        
   46004 | 2024-04-21 18:08:14 |         MASTER-SAAO | (18h 55m 52.18s , -82d 17m 26.7s) |   C |    60 | 15.9 |        
   46084 | 2024-04-21 18:09:34 |         MASTER-SAAO | (22h 00m 30.53s , -76d 49m 44.4s) |   C |    60 | 14.3 |        
   46084 | 2024-04-21 18:09:34 |         MASTER-SAAO | (21h 53m 15.79s , -76d 36m 36.9s) |   C |    60 | 13.9 |        
   48826 | 2024-04-21 18:55:15 |         MASTER-SAAO | (18h 24m 28.55s , -80d 39m 25.0s) |   C |    60 | 16.0 |        
   48826 | 2024-04-21 18:55:15 |         MASTER-SAAO | (18h 13m 44.51s , -80d 26m 26.6s) |   C |    60 | 16.0 |        
   48906 | 2024-04-21 18:56:35 |         MASTER-SAAO | (19h 09m 21.30s , -86d 19m 52.2s) |   C |    60 | 15.4 |        
   48906 | 2024-04-21 18:56:35 |         MASTER-SAAO | (18h 42m 35.74s , -86d 06m 39.7s) |   C |    60 | 15.4 |        
   48985 | 2024-04-21 18:57:55 |         MASTER-SAAO | (23h 00m 48.07s , -86d 19m 56.4s) |   C |    60 | 15.5 |        
   48985 | 2024-04-21 18:57:55 |         MASTER-SAAO | (22h 34m 45.80s , -86d 07m 10.5s) |   C |    60 | 15.4 |        
   49065 | 2024-04-21 18:59:15 |         MASTER-SAAO | (17h 51m 10.74s , -84d 25m 16.4s) |   C |    60 | 16.1 |        
   49065 | 2024-04-21 18:59:15 |         MASTER-SAAO | (17h 33m 23.97s , -84d 12m 07.9s) |   C |    60 | 15.9 |        
   49151 | 2024-04-21 19:00:40 |         MASTER-SAAO | (00h 02m 30.29s , -84d 25m 16.7s) |   C |    60 | 14.8 |        
   49151 | 2024-04-21 19:00:40 |         MASTER-SAAO | (23h 45m 30.85s , -84d 12m 31.4s) |   C |    60 | 14.9 |        
   49632 | 2024-04-21 19:08:41 |         MASTER-SAAO | (22h 55m 35.69s , -78d 31m 23.4s) |   C |    60 | 12.1 |        
   75911 | 2024-04-22 02:26:40 |         MASTER-SAAO | (20h 38m 11.09s , -73d 11m 28.6s) |   C |    60 | 19.0 |        
   75911 | 2024-04-22 02:26:40 |         MASTER-SAAO | (20h 31m 55.43s , -72d 58m 50.9s) |   C |    60 | 18.6 |        
   75991 | 2024-04-22 02:28:00 |         MASTER-SAAO | (21h 30m 32.29s , -73d 11m 35.6s) |   C |    60 | 18.7 |        
   75991 | 2024-04-22 02:28:00 |         MASTER-SAAO | (21h 24m 17.41s , -72d 58m 58.1s) |   C |    60 | 18.4 |        
   76080 | 2024-04-22 02:29:30 |         MASTER-SAAO | (19h 12m 18.88s , -74d 51m 29.3s) |   C |    60 | 18.9 |        
   76080 | 2024-04-22 02:29:30 |         MASTER-SAAO | (19h 19m 06.07s , -75d 05m 05.8s) |   C |    60 | 18.6 |        
   76160 | 2024-04-22 02:30:49 |         MASTER-SAAO | (18h 35m 11.81s , -76d 42m 32.3s) |   C |    60 | 18.8 |        
   76160 | 2024-04-22 02:30:49 |         MASTER-SAAO | (18h 42m 54.09s , -76d 56m 12.0s) |   C |    60 | 18.5 |        
   76663 | 2024-04-22 02:39:13 |         MASTER-SAAO | (19h 42m 44.81s , -72d 59m 33.7s) |   C |    60 | 18.4 |        
   76663 | 2024-04-22 02:39:13 |         MASTER-SAAO | (19h 48m 49.35s , -73d 13m 03.4s) |   C |    60 | 18.1 |        
   77275 | 2024-04-22 02:49:24 |         MASTER-SAAO | (20h 35m 22.24s , -73d 01m 07.7s) |   C |    60 | 17.8 |        
   77275 | 2024-04-22 02:49:24 |         MASTER-SAAO | (20h 41m 25.57s , -73d 14m 35.2s) |   C |    60 | 17.7 |        
   77367 | 2024-04-22 02:50:56 |         MASTER-SAAO | (21h 30m 18.28s , -73d 11m 19.4s) |   C |    60 | 18.3 |        
   77367 | 2024-04-22 02:50:56 |         MASTER-SAAO | (21h 24m 04.26s , -72d 58m 45.1s) |   C |    60 | 18.1 |        
   79296 | 2024-04-22 03:23:06 |         MASTER-SAAO | (19h 11m 57.77s , -74d 51m 29.9s) |   C |    60 | 19.3 |        
   79296 | 2024-04-22 03:23:06 |         MASTER-SAAO | (19h 18m 51.17s , -75d 05m 01.2s) |   C |    60 | 19.0 |        
   79396 | 2024-04-22 03:24:46 |         MASTER-SAAO | (18h 42m 51.85s , -76d 57m 02.8s) |   C |    60 | 18.9 |        
   79396 | 2024-04-22 03:24:46 |         MASTER-SAAO | (18h 35m 02.79s , -76d 43m 27.3s) |   C |    60 | 19.1 |        
   79496 | 2024-04-22 03:26:26 |         MASTER-SAAO | (19h 42m 15.17s , -72d 57m 13.5s) |   C |    60 | 19.2 |        
   79496 | 2024-04-22 03:26:26 |         MASTER-SAAO | (19h 48m 21.69s , -73d 10m 43.5s) |   C |    60 | 19.0 |        
   79576 | 2024-04-22 03:27:45 |         MASTER-SAAO | (20h 34m 30.26s , -73d 01m 31.4s) |   C |    60 | 19.2 |        
   79576 | 2024-04-22 03:27:45 |         MASTER-SAAO | (20h 40m 34.07s , -73d 15m 02.2s) |   C |    60 | 19.1 |        
   80537 | 2024-04-22 03:43:47 |         MASTER-SAAO | (19h 12m 47.62s , -74d 51m 12.1s) |   C |    60 | 19.6 |        
   80537 | 2024-04-22 03:43:47 |         MASTER-SAAO | (19h 19m 41.22s , -75d 04m 40.1s) |   C |    60 | 19.3 |        
   80617 | 2024-04-22 03:45:07 |         MASTER-SAAO | (18h 35m 34.85s , -76d 42m 39.4s) |   C |    60 | 18.0 |        
   80617 | 2024-04-22 03:45:07 |         MASTER-SAAO | (18h 43m 23.24s , -76d 56m 17.0s) |   C |    60 | 18.0 |        
   80697 | 2024-04-22 03:46:27 |         MASTER-SAAO | (19h 48m 23.11s , -73d 10m 48.7s) |   C |    60 | 19.4 |        
   80697 | 2024-04-22 03:46:27 |         MASTER-SAAO | (19h 42m 15.69s , -72d 57m 16.3s) |   C |    60 | 19.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 10007
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 GRB 240421A ( Fermi GBM team, GCN 36204) errorbox  42622 sec after notice time and 42658 sec after trigger time at 2024-04-21 17:12:58 UT, with upper limit up to  19.6 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -13.9 deg. 

The galactic latitude b = -32 deg., longitude l = 313 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2430011

We obtain a following upper limits.  

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

   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (20h 50m 46.74s , -82d 18m 27.9s) |   C |    60 | 14.2 |        
   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (21h 03m 23.96s , -82d 31m 37.4s) |   C |    60 | 14.4 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 29m 07.64s , -78d 43m 31.0s) |   C |    60 | 14.5 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 20m 41.90s , -78d 30m 17.8s) |   C |    60 | 14.2 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 24m 07.82s , -84d 24m 28.5s) |   C |    60 | 16.7 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 07m 14.94s , -84d 11m 11.3s) |   C |    60 | 16.6 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (19h 08m 34.69s , -82d 29m 18.5s) |   C |    60 | 15.9 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (18h 55m 46.97s , -82d 15m 59.6s) |   C |    60 | 15.8 |        
   43251 | 2024-04-21 17:22:20 |         MASTER-SAAO | (22h 00m 04.06s , -76d 48m 46.6s) |   C |    60 | 14.6 |        
   43251 | 2024-04-21 17:22:20 |         MASTER-SAAO | (21h 52m 57.74s , -76d 35m 35.3s) |   C |    60 | 14.4 |        
   43491 | 2024-04-21 17:26:20 |         MASTER-SAAO | (19h 47m 50.73s , -76d 48m 10.6s) |   C |    60 | 12.4 |        
   44103 | 2024-04-21 17:36:33 |         MASTER-SAAO | (21h 37m 45.89s , -78d 30m 58.6s) |   C |    60 | 12.3 |        
   44263 | 2024-04-21 17:39:13 |         MASTER-SAAO | (20h 24m 36.12s , -84d 24m 16.8s) |   C |    60 | 15.1 |        
   44263 | 2024-04-21 17:39:13 |         MASTER-SAAO | (20h 07m 30.98s , -84d 11m 04.0s) |   C |    60 | 15.0 |        
   44343 | 2024-04-21 17:40:33 |         MASTER-SAAO | (19h 08m 48.17s , -82d 31m 41.4s) |   C |    60 | 15.0 |        
   44343 | 2024-04-21 17:40:33 |         MASTER-SAAO | (18h 55m 48.73s , -82d 18m 26.9s) |   C |    60 | 14.8 |        
   44423 | 2024-04-21 17:41:52 |         MASTER-SAAO | (22h 00m 15.05s , -76d 48m 31.1s) |   C |    60 | 17.5 |        
   44423 | 2024-04-21 17:41:52 |         MASTER-SAAO | (21h 53m 05.05s , -76d 35m 23.4s) |   C |    60 | 17.5 |        
   44503 | 2024-04-21 17:43:12 |         MASTER-SAAO | (22h 58m 49.64s , -82d 30m 50.3s) |   C |    60 | 16.7 |        
   44503 | 2024-04-21 17:43:12 |         MASTER-SAAO | (22h 46m 19.25s , -82d 17m 54.5s) |   C |    60 | 17.0 |        
   45150 | 2024-04-21 17:53:59 |         MASTER-SAAO | (19h 48m 11.86s , -76d 49m 39.6s) |   C |    60 | 16.8 |        
   45150 | 2024-04-21 17:53:59 |         MASTER-SAAO | (19h 40m 44.69s , -76d 36m 38.8s) |   C |    60 | 16.7 |        
   45448 | 2024-04-21 17:58:57 |         MASTER-SAAO | (21h 28m 54.13s , -80d 37m 48.7s) |   C |    60 | 15.3 |        
   45448 | 2024-04-21 17:58:57 |         MASTER-SAAO | (21h 18m 40.09s , -80d 24m 43.3s) |   C |    60 | 15.6 |        
   45527 | 2024-04-21 18:00:17 |         MASTER-SAAO | (21h 04m 08.14s , -82d 32m 46.0s) |   C |    60 | 14.1 |        
   45527 | 2024-04-21 18:00:17 |         MASTER-SAAO | (20h 51m 15.04s , -82d 19m 38.3s) |   C |    60 | 14.1 |        
   45686 | 2024-04-21 18:02:56 |         MASTER-SAAO | (19h 56m 35.72s , -80d 37m 03.1s) |   C |    60 | 12.3 |        
   45686 | 2024-04-21 18:02:56 |         MASTER-SAAO | (19h 46m 13.06s , -80d 23m 51.9s) |   C |    60 | 12.5 |        
   45766 | 2024-04-21 18:04:15 |         MASTER-SAAO | (21h 46m 32.67s , -78d 44m 37.7s) |   C |    60 | 14.6 |        
   45766 | 2024-04-21 18:04:15 |         MASTER-SAAO | (21h 38m 02.95s , -78d 31m 31.2s) |   C |    60 | 14.2 |        
   45845 | 2024-04-21 18:05:35 |         MASTER-SAAO | (20h 54m 20.62s , -76d 49m 02.1s) |   C |    60 | 13.3 |        
   45845 | 2024-04-21 18:05:35 |         MASTER-SAAO | (20h 47m 01.31s , -76d 35m 51.8s) |   C |    60 | 13.1 |        
   45925 | 2024-04-21 18:06:54 |         MASTER-SAAO | (20h 25m 00.59s , -84d 25m 43.7s) |   C |    60 | 15.6 |        
   45925 | 2024-04-21 18:06:54 |         MASTER-SAAO | (20h 07m 42.39s , -84d 12m 31.1s) |   C |    60 | 15.4 |        
   46004 | 2024-04-21 18:08:14 |         MASTER-SAAO | (19h 08m 57.14s , -82d 30m 40.0s) |   C |    60 | 16.3 |        
   46004 | 2024-04-21 18:08:14 |         MASTER-SAAO | (18h 55m 52.18s , -82d 17m 26.7s) |   C |    60 | 15.9 |        
   46084 | 2024-04-21 18:09:34 |         MASTER-SAAO | (22h 00m 30.53s , -76d 49m 44.4s) |   C |    60 | 14.3 |        
   46084 | 2024-04-21 18:09:34 |         MASTER-SAAO | (21h 53m 15.79s , -76d 36m 36.9s) |   C |    60 | 13.9 |        
   48826 | 2024-04-21 18:55:15 |         MASTER-SAAO | (18h 24m 28.55s , -80d 39m 25.0s) |   C |    60 | 16.0 |        
   48826 | 2024-04-21 18:55:15 |         MASTER-SAAO | (18h 13m 44.51s , -80d 26m 26.6s) |   C |    60 | 16.0 |        
   48906 | 2024-04-21 18:56:35 |         MASTER-SAAO | (19h 09m 21.30s , -86d 19m 52.2s) |   C |    60 | 15.4 |        
   48906 | 2024-04-21 18:56:35 |         MASTER-SAAO | (18h 42m 35.74s , -86d 06m 39.7s) |   C |    60 | 15.4 |        
   48985 | 2024-04-21 18:57:55 |         MASTER-SAAO | (23h 00m 48.07s , -86d 19m 56.4s) |   C |    60 | 15.5 |        
   48985 | 2024-04-21 18:57:55 |         MASTER-SAAO | (22h 34m 45.80s , -86d 07m 10.5s) |   C |    60 | 15.4 |        
   49065 | 2024-04-21 18:59:15 |         MASTER-SAAO | (17h 51m 10.74s , -84d 25m 16.4s) |   C |    60 | 16.1 |        
   49065 | 2024-04-21 18:59:15 |         MASTER-SAAO | (17h 33m 23.97s , -84d 12m 07.9s) |   C |    60 | 15.9 |        
   49151 | 2024-04-21 19:00:40 |         MASTER-SAAO | (00h 02m 30.29s , -84d 25m 16.7s) |   C |    60 | 14.8 |        
   49151 | 2024-04-21 19:00:40 |         MASTER-SAAO | (23h 45m 30.85s , -84d 12m 31.4s) |   C |    60 | 14.9 |        
   49632 | 2024-04-21 19:08:41 |         MASTER-SAAO | (22h 55m 35.69s , -78d 31m 23.4s) |   C |    60 | 12.1 |        
   75911 | 2024-04-22 02:26:40 |         MASTER-SAAO | (20h 38m 11.09s , -73d 11m 28.6s) |   C |    60 | 19.0 |        
   75911 | 2024-04-22 02:26:40 |         MASTER-SAAO | (20h 31m 55.43s , -72d 58m 50.9s) |   C |    60 | 18.6 |        
   75991 | 2024-04-22 02:28:00 |         MASTER-SAAO | (21h 30m 32.29s , -73d 11m 35.6s) |   C |    60 | 18.7 |        
   75991 | 2024-04-22 02:28:00 |         MASTER-SAAO | (21h 24m 17.41s , -72d 58m 58.1s) |   C |    60 | 18.4 |        
   76080 | 2024-04-22 02:29:30 |         MASTER-SAAO | (19h 12m 18.88s , -74d 51m 29.3s) |   C |    60 | 18.9 |        
   76080 | 2024-04-22 02:29:30 |         MASTER-SAAO | (19h 19m 06.07s , -75d 05m 05.8s) |   C |    60 | 18.6 |        
   76160 | 2024-04-22 02:30:49 |         MASTER-SAAO | (18h 35m 11.81s , -76d 42m 32.3s) |   C |    60 | 18.8 |        
   76160 | 2024-04-22 02:30:49 |         MASTER-SAAO | (18h 42m 54.09s , -76d 56m 12.0s) |   C |    60 | 18.5 |        
   76663 | 2024-04-22 02:39:13 |         MASTER-SAAO | (19h 42m 44.81s , -72d 59m 33.7s) |   C |    60 | 18.4 |        
   76663 | 2024-04-22 02:39:13 |         MASTER-SAAO | (19h 48m 49.35s , -73d 13m 03.4s) |   C |    60 | 18.1 |        
   77275 | 2024-04-22 02:49:24 |         MASTER-SAAO | (20h 35m 22.24s , -73d 01m 07.7s) |   C |    60 | 17.8 |        
   77275 | 2024-04-22 02:49:24 |         MASTER-SAAO | (20h 41m 25.57s , -73d 14m 35.2s) |   C |    60 | 17.7 |        
   77367 | 2024-04-22 02:50:56 |         MASTER-SAAO | (21h 30m 18.28s , -73d 11m 19.4s) |   C |    60 | 18.3 |        
   77367 | 2024-04-22 02:50:56 |         MASTER-SAAO | (21h 24m 04.26s , -72d 58m 45.1s) |   C |    60 | 18.1 |        
   79296 | 2024-04-22 03:23:06 |         MASTER-SAAO | (19h 11m 57.77s , -74d 51m 29.9s) |   C |    60 | 19.3 |        
   79296 | 2024-04-22 03:23:06 |         MASTER-SAAO | (19h 18m 51.17s , -75d 05m 01.2s) |   C |    60 | 19.0 |        
   79396 | 2024-04-22 03:24:46 |         MASTER-SAAO | (18h 42m 51.85s , -76d 57m 02.8s) |   C |    60 | 18.9 |        
   79396 | 2024-04-22 03:24:46 |         MASTER-SAAO | (18h 35m 02.79s , -76d 43m 27.3s) |   C |    60 | 19.1 |        
   79496 | 2024-04-22 03:26:26 |         MASTER-SAAO | (19h 42m 15.17s , -72d 57m 13.5s) |   C |    60 | 19.2 |        
   79496 | 2024-04-22 03:26:26 |         MASTER-SAAO | (19h 48m 21.69s , -73d 10m 43.5s) |   C |    60 | 19.0 |        
   79576 | 2024-04-22 03:27:45 |         MASTER-SAAO | (20h 34m 30.26s , -73d 01m 31.4s) |   C |    60 | 19.2 |        
   79576 | 2024-04-22 03:27:45 |         MASTER-SAAO | (20h 40m 34.07s , -73d 15m 02.2s) |   C |    60 | 19.1 |        
   80537 | 2024-04-22 03:43:47 |         MASTER-SAAO | (19h 19m 41.22s , -75d 04m 40.1s) |   C |    60 | 19.3 |        
   80537 | 2024-04-22 03:43:47 |         MASTER-SAAO | (19h 12m 47.62s , -74d 51m 12.1s) |   C |    60 | 19.6 |        
   80617 | 2024-04-22 03:45:07 |         MASTER-SAAO | (18h 35m 34.85s , -76d 42m 39.4s) |   C |    60 | 18.0 |        
   80617 | 2024-04-22 03:45:07 |         MASTER-SAAO | (18h 43m 23.24s , -76d 56m 17.0s) |   C |    60 | 18.0 |        
   80697 | 2024-04-22 03:46:27 |         MASTER-SAAO | (19h 48m 23.11s , -73d 10m 48.7s) |   C |    60 | 19.4 |        
   80697 | 2024-04-22 03:46:27 |         MASTER-SAAO | (19h 42m 15.69s , -72d 57m 16.3s) |   C |    60 | 19.6 |        
  129234 | 2024-04-22 17:15:24 |         MASTER-SAAO | (21h 28m 22.89s , -80d 35m 41.7s) |   C |    60 | 16.9 |        
  129234 | 2024-04-22 17:15:24 |         MASTER-SAAO | (21h 18m 11.71s , -80d 22m 28.0s) |   C |    60 | 16.7 |        
  129396 | 2024-04-22 17:18:06 |         MASTER-SAAO | (21h 03m 41.56s , -82d 31m 42.5s) |   C |    60 | 17.2 |        
  129396 | 2024-04-22 17:18:06 |         MASTER-SAAO | (20h 50m 56.42s , -82d 18m 22.5s) |   C |    60 | 16.8 |        
  129559 | 2024-04-22 17:20:48 |         MASTER-SAAO | (20h 29m 19.73s , -78d 42m 02.4s) |   C |    60 | 16.8 |        
  129559 | 2024-04-22 17:20:48 |         MASTER-SAAO | (20h 20m 48.75s , -78d 28m 39.5s) |   C |    60 | 16.4 |        
  130051 | 2024-04-22 17:29:01 |         MASTER-SAAO | (19h 56m 31.43s , -80d 37m 54.6s) |   C |    60 | 15.9 |        
  130052 | 2024-04-22 17:29:01 |         MASTER-SAAO | (19h 46m 08.25s , -80d 24m 32.2s) |   C |    60 | 15.7 |        
  130139 | 2024-04-22 17:30:29 |         MASTER-SAAO | (21h 46m 20.07s , -78d 43m 48.6s) |   C |    60 | 16.8 |        
  130139 | 2024-04-22 17:30:29 |         MASTER-SAAO | (21h 37m 54.23s , -78d 30m 27.1s) |   C |    60 | 16.6 |        
  130219 | 2024-04-22 17:31:49 |         MASTER-SAAO | (21h 28m 30.71s , -80d 36m 08.3s) |   C |    60 | 16.7 |        
  130219 | 2024-04-22 17:31:49 |         MASTER-SAAO | (21h 18m 24.92s , -80d 22m 45.2s) |   C |    60 | 16.6 |        
  130399 | 2024-04-22 17:34:49 |         MASTER-SAAO | (21h 04m 02.40s , -82d 30m 32.3s) |   C |    60 | 16.8 |        
  130399 | 2024-04-22 17:34:49 |         MASTER-SAAO | (20h 51m 15.13s , -82d 17m 10.2s) |   C |    60 | 16.6 |        
  130560 | 2024-04-22 17:37:29 |         MASTER-SAAO | (20h 29m 25.70s , -78d 42m 12.0s) |   C |    60 | 16.7 |        
  130560 | 2024-04-22 17:37:29 |         MASTER-SAAO | (20h 20m 51.33s , -78d 28m 49.2s) |   C |    60 | 16.4 |        
  131638 | 2024-04-22 17:55:27 |         MASTER-SAAO | (19h 56m 48.98s , -80d 36m 43.8s) |   C |    60 | 17.0 |        
  131638 | 2024-04-22 17:55:27 |         MASTER-SAAO | (19h 46m 19.51s , -80d 23m 24.4s) |   C |    60 | 16.8 |        
  131717 | 2024-04-22 17:56:47 |         MASTER-SAAO | (21h 46m 36.66s , -78d 43m 36.4s) |   C |    60 | 16.8 |        
  131717 | 2024-04-22 17:56:47 |         MASTER-SAAO | (21h 38m 05.59s , -78d 30m 14.7s) |   C |    60 | 16.6 |        
  131797 | 2024-04-22 17:58:06 |         MASTER-SAAO | (21h 28m 50.57s , -80d 38m 39.5s) |   C |    60 | 17.0 |        
  131797 | 2024-04-22 17:58:06 |         MASTER-SAAO | (21h 18m 35.47s , -80d 25m 16.5s) |   C |    60 | 17.0 |        
  131961 | 2024-04-22 18:00:50 |         MASTER-SAAO | (21h 04m 25.71s , -82d 31m 09.8s) |   C |    60 | 16.9 |        
  131961 | 2024-04-22 18:00:50 |         MASTER-SAAO | (20h 51m 28.30s , -82d 17m 49.6s) |   C |    60 | 16.8 |        
  132041 | 2024-04-22 18:02:10 |         MASTER-SAAO | (20h 29m 37.10s , -78d 44m 45.5s) |   C |    60 | 16.7 |        
  132041 | 2024-04-22 18:02:10 |         MASTER-SAAO | (20h 20m 58.19s , -78d 31m 21.5s) |   C |    60 | 16.4 |        
  132130 | 2024-04-22 18:03:40 |         MASTER-SAAO | (20h 54m 28.25s , -76d 49m 17.8s) |   C |    60 | 16.2 |        
  132130 | 2024-04-22 18:03:40 |         MASTER-SAAO | (20h 47m 04.96s , -76d 35m 54.0s) |   C |    60 | 16.2 |        
  132210 | 2024-04-22 18:05:00 |         MASTER-SAAO | (20h 07m 46.23s , -84d 12m 15.0s) |   C |    60 | 16.4 |        
  132210 | 2024-04-22 18:05:00 |         MASTER-SAAO | (20h 25m 06.15s , -84d 25m 42.7s) |   C |    60 | 16.5 |        
  132613 | 2024-04-22 18:11:42 |         MASTER-SAAO | (19h 56m 56.58s , -80d 37m 24.9s) |   C |    60 | 16.6 |        
  132613 | 2024-04-22 18:11:42 |         MASTER-SAAO | (19h 46m 23.90s , -80d 24m 03.2s) |   C |    60 | 16.5 |        
  132692 | 2024-04-22 18:13:02 |         MASTER-SAAO | (21h 46m 44.26s , -78d 44m 32.5s) |   C |    60 | 16.1 |        
  132692 | 2024-04-22 18:13:02 |         MASTER-SAAO | (21h 38m 10.26s , -78d 31m 09.4s) |   C |    60 | 15.8 |        
  133098 | 2024-04-22 18:19:47 |         MASTER-SAAO | (20h 54m 30.35s , -76d 51m 22.4s) |   C |    60 | 16.5 |        
  133098 | 2024-04-22 18:19:47 |         MASTER-SAAO | (20h 47m 03.55s , -76d 37m 59.2s) |   C |    60 | 16.2 |        
  133177 | 2024-04-22 18:21:07 |         MASTER-SAAO | (20h 25m 29.05s , -84d 26m 57.9s) |   C |    60 | 16.2 |        
  133177 | 2024-04-22 18:21:07 |         MASTER-SAAO | (20h 08m 00.64s , -84d 13m 31.1s) |   C |    60 | 16.0 |        
  134088 | 2024-04-22 18:36:18 |         MASTER-SAAO | (20h 54m 43.91s , -76d 49m 59.1s) |   C |    60 | 17.1 |        
  134088 | 2024-04-22 18:36:18 |         MASTER-SAAO | (20h 47m 13.90s , -76d 36m 38.9s) |   C |    60 | 16.9 |        
  134168 | 2024-04-22 18:37:37 |         MASTER-SAAO | (20h 25m 37.26s , -84d 26m 42.9s) |   C |    60 | 17.4 |        
  134168 | 2024-04-22 18:37:37 |         MASTER-SAAO | (20h 08m 01.39s , -84d 13m 18.9s) |   C |    60 | 17.2 |        
  135196 | 2024-04-22 18:54:45 |         MASTER-SAAO | (19h 09m 27.22s , -82d 34m 09.1s) |   C |    60 | 18.3 |        
  135196 | 2024-04-22 18:54:45 |         MASTER-SAAO | (18h 55m 49.07s , -82d 20m 51.6s) |   C |    60 | 18.2 |        
  135355 | 2024-04-22 18:57:25 |         MASTER-SAAO | (19h 48m 34.81s , -76d 51m 00.7s) |   C |    60 | 17.5 |        
  135355 | 2024-04-22 18:57:25 |         MASTER-SAAO | (19h 40m 49.00s , -76d 37m 43.7s) |   C |    60 | 17.5 |        
  135435 | 2024-04-22 18:58:44 |         MASTER-SAAO | (19h 12m 50.73s , -78d 46m 11.5s) |   C |    60 | 17.6 |        
  135435 | 2024-04-22 18:58:44 |         MASTER-SAAO | (19h 03m 46.20s , -78d 32m 54.9s) |   C |    60 | 17.5 |        
  135679 | 2024-04-22 19:02:48 |         MASTER-SAAO | (23h 00m 27.71s , -82d 31m 21.9s) |   C |    60 | 17.3 |        
  135679 | 2024-04-22 19:02:48 |         MASTER-SAAO | (22h 47m 24.88s , -82d 18m 11.7s) |   C |    60 | 17.3 |        
  136726 | 2024-04-22 19:20:16 |         MASTER-SAAO | (19h 09m 28.16s , -82d 35m 06.0s) |   C |    60 | 17.5 |        
  136726 | 2024-04-22 19:20:16 |         MASTER-SAAO | (18h 55m 45.94s , -82d 21m 54.5s) |   C |    60 | 17.3 |        
  136886 | 2024-04-22 19:22:56 |         MASTER-SAAO | (19h 48m 39.68s , -76d 51m 40.0s) |   C |    60 | 16.9 |        
  136886 | 2024-04-22 19:22:56 |         MASTER-SAAO | (19h 40m 50.36s , -76d 38m 28.3s) |   C |    60 | 16.8 |        
  136966 | 2024-04-22 19:24:16 |         MASTER-SAAO | (19h 12m 54.18s , -78d 47m 09.2s) |   C |    60 | 17.0 |        
  136966 | 2024-04-22 19:24:16 |         MASTER-SAAO | (19h 03m 45.44s , -78d 33m 58.6s) |   C |    60 | 16.9 |        
  137046 | 2024-04-22 19:25:36 |         MASTER-SAAO | (23h 00m 56.60s , -82d 32m 30.0s) |   C |    60 | 16.6 |        
  137046 | 2024-04-22 19:25:36 |         MASTER-SAAO | (22h 47m 46.41s , -82d 19m 20.3s) |   C |    60 | 16.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 9983
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 GRB 240421A ( Fermi GBM team, GCN 36204) errorbox  42622 sec after notice time and 42658 sec after trigger time at 2024-04-21 17:12:58 UT, with upper limit up to  16.7 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -13.9 deg. 

The galactic latitude b = -32 deg., longitude l = 313 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2430011

We obtain a following upper limits.  

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

   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (20h 50m 46.74s , -82d 18m 27.9s) |   C |    60 | 14.2 |        
   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (21h 03m 23.96s , -82d 31m 37.4s) |   C |    60 | 14.4 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 29m 07.64s , -78d 43m 31.0s) |   C |    60 | 14.5 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 20m 41.90s , -78d 30m 17.8s) |   C |    60 | 14.2 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 24m 07.82s , -84d 24m 28.5s) |   C |    60 | 16.7 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 07m 14.94s , -84d 11m 11.3s) |   C |    60 | 16.6 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (19h 08m 34.69s , -82d 29m 18.5s) |   C |    60 | 15.9 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (18h 55m 46.97s , -82d 15m 59.6s) |   C |    60 | 15.8 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 9984
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 GRB 240421A ( Fermi GBM team, GCN 36204) errorbox  42622 sec after notice time and 42658 sec after trigger time at 2024-04-21 17:12:58 UT, with upper limit up to  16.7 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -13.9 deg. 

The galactic latitude b = -32 deg., longitude l = 313 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2430011

We obtain a following upper limits.  

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

   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (20h 50m 46.74s , -82d 18m 27.9s) |   C |    60 | 14.2 |        
   42689 | 2024-04-21 17:12:58 |         MASTER-SAAO | (21h 03m 23.96s , -82d 31m 37.4s) |   C |    60 | 14.4 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 29m 07.64s , -78d 43m 31.0s) |   C |    60 | 14.5 |        
   42768 | 2024-04-21 17:14:18 |         MASTER-SAAO | (20h 20m 41.90s , -78d 30m 17.8s) |   C |    60 | 14.2 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 24m 07.82s , -84d 24m 28.5s) |   C |    60 | 16.7 |        
   43087 | 2024-04-21 17:19:37 |         MASTER-SAAO | (20h 07m 14.94s , -84d 11m 11.3s) |   C |    60 | 16.6 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (19h 08m 34.69s , -82d 29m 18.5s) |   C |    60 | 15.9 |        
   43167 | 2024-04-21 17:20:56 |         MASTER-SAAO | (18h 55m 46.97s , -82d 15m 59.6s) |   C |    60 | 15.8 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025