MASTER Net MASTER Database: GRB190525.67 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 FERMI GRB190525.67
Trignum 580493060
Trigger time 2019-05-25 16:04:15
Notice time 2019-05-25 16:04:51.334204
Coord, eb (08h 41m 12.00s , +22d 40m 58.8s) , 29.13
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
1028461 2019-05-25 16:04:51.334204 08h 41m 12.00s +22d 40m 58.8s FERMI 29.13 alert 580493060 3 111 alert

DAYS:

MASTER optical transients in this field
MASTER OT (J2000.0) Сoordinates Datetime Published Mag Site Image
J064749.53+742946.3 (06h 47m 49.79s , +74d 29m 46.0s) 2019-06-01 14:12:28 AT2019guc on 2020-02-04 20:11:55.227253 Tavrida Transient on Tavrida
J074640.60+173412.7 (07h 46m 40.61s , +17d 34m 12.8s) 2019-05-30 17:25:26 AT2019gry on 2022-01-29 00:00:56.133435 Tavrida Transient on Tavrida
J080207.73+352847.7 (08h 02m 07.73s , +35d 28m 47.7s) 2019-05-30 14:34:09 ATel# 12824 on 2019-05-31 12:42:00 Amur Transient on Amur

Synchronous WFC images
Distance datetime coord2000 observatory camera links
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2019-05-25 16:04:15 (JD 2458629.169618)

Siderial time 10.775645 h

Ra 08:41:12.00 Dec 22:40:58.80
(130.300000d, 22.683000d)

Rise 2019-05-26 08:19:40

Transit 2019-05-26 16:55:19

Set 2019-05-27 01:30:57

Amur

Object: Altitude: -0.48 Azimuth: 127.89

Sun: Altitude: -18.24 Azimuth: 189.44

Moon: Altitude: -3.38 Azimuth: 292.30

Tunka

Object: Altitude: 13.63 Azimuth: 109.48

Sun: Altitude: -16.11 Azimuth: 165.60

Moon: Altitude: -18.60 Azimuth: 273.58

Kislovodsk

Object: Altitude: 53.54 Azimuth: 66.60

Sun: Altitude: 4.39 Azimuth: 115.00

Moon: Altitude: -57.90 Azimuth: 218.95

Tavrida

Object: Altitude: 58.38 Azimuth: 54.99

Sun: Altitude: 10.40 Azimuth: 109.23

Moon: Altitude: -60.23 Azimuth: 203.44

SAAO

Object: Altitude: 33.21 Azimuth: 163.94

Sun: Altitude: -5.40 Azimuth: 111.40

Moon: Altitude: -40.91 Azimuth: 1.65

IAC

Object: Altitude: 68.71 Azimuth: 280.11

Sun: Altitude: 48.13 Azimuth: 90.41

Moon: Altitude: -52.66 Azimuth: 99.67

Argentina

Object: Altitude: -0.48 Azimuth: 243.35

Sun: Altitude: 36.81 Azimuth: 188.42

Moon: Altitude: 9.90 Azimuth: 76.41

Mexico

Object: Altitude: -8.97 Azimuth: 236.58

Sun: Altitude: 45.80 Azimuth: 271.20

Moon: Altitude: 23.97 Azimuth: 50.61

Ural

Object: Altitude: 38.60 Azimuth: 71.09

Sun: Altitude: 1.89 Azimuth: 127.30

Moon: Altitude: -40.91 Azimuth: 230.38

Vostryakovo

Object: Altitude: 49.83 Azimuth: 48.41

Sun: Altitude: 11.69 Azimuth: 110.03

Moon: Altitude: -49.49 Azimuth: 203.51

Gal. latitude: 34.240250 Gal. longitude: 203.059742

Dist. to Sun: 62.932564

Dist. to Moon: 163.948110

Moon coord.: (326.132488 d, -16.692361 d)

Sun coord.: (61.902082 d, 20.932737 d)

Lunar disk: 0.597557

Lunar phase: 78.748605

Lunar bright limb: 71.225841

No SN in this field

2019-05-25 16:04:51 (JD 2458629.170035)

Siderial time 10.785673 h

Ra 08:41:12.00 Dec 22:40:58.80
(130.300000d, 22.683000d)

Rise 2019-05-26 08:19:40

Transit 2019-05-26 16:55:19

Set 2019-05-27 01:30:57

Amur

Object: Altitude: -0.56 Azimuth: 128.00

Sun: Altitude: -18.23 Azimuth: 189.58

Moon: Altitude: -3.29 Azimuth: 292.41

Tunka

Object: Altitude: 13.55 Azimuth: 109.59

Sun: Altitude: -16.13 Azimuth: 165.75

Moon: Altitude: -18.51 Azimuth: 273.69

Kislovodsk

Object: Altitude: 53.44 Azimuth: 66.77

Sun: Altitude: 4.29 Azimuth: 115.10

Moon: Altitude: -57.84 Azimuth: 219.17

Tavrida

Object: Altitude: 58.30 Azimuth: 55.19

Sun: Altitude: 10.30 Azimuth: 109.33

Moon: Altitude: -60.19 Azimuth: 203.71

SAAO

Object: Altitude: 33.18 Azimuth: 163.78

Sun: Altitude: -5.52 Azimuth: 111.33

Moon: Altitude: -40.92 Azimuth: 1.47

IAC

Object: Altitude: 68.84 Azimuth: 280.24

Sun: Altitude: 48.00 Azimuth: 90.48

Moon: Altitude: -52.79 Azimuth: 99.77

Argentina

Object: Altitude: -0.36 Azimuth: 243.27

Sun: Altitude: 36.83 Azimuth: 188.25

Moon: Altitude: 9.78 Azimuth: 76.34

Mexico

Object: Altitude: -8.86 Azimuth: 236.67

Sun: Altitude: 45.93 Azimuth: 271.28

Moon: Altitude: 23.87 Azimuth: 50.72

Ural

Object: Altitude: 38.52 Azimuth: 71.24

Sun: Altitude: 1.83 Azimuth: 127.42

Moon: Altitude: -40.85 Azimuth: 230.54

Vostryakovo

Object: Altitude: 49.77 Azimuth: 48.60

Sun: Altitude: 11.61 Azimuth: 110.15

Moon: Altitude: -49.45 Azimuth: 203.71

Gal. latitude: 34.240250 Gal. longitude: 203.059742

Dist. to Sun: 62.932165

Dist. to Moon: 163.943228

Moon coord.: (326.137478 d, -16.691076 d)

Sun coord.: (61.902503 d, 20.932812 d)

Lunar disk: 0.597518

Lunar phase: 78.753143

Lunar bright limb: 71.224497

No SN in this field

2019-05-25 17:04:51 (JD 2458629.211701)

Siderial time 11.788411 h

Ra 08:41:12.00 Dec 22:40:58.80
(130.300000d, 22.683000d)

Rise 2019-05-26 08:19:40

Transit 2019-05-26 16:55:19

Set 2019-05-27 01:30:57

Amur

Object: Altitude: -7.46 Azimuth: 140.07

Sun: Altitude: -15.46 Azimuth: 203.93

Moon: Altitude: 5.00 Azimuth: 303.61

Tunka

Object: Altitude: 5.14 Azimuth: 120.79

Sun: Altitude: -17.25 Azimuth: 180.32

Moon: Altitude: -9.54 Azimuth: 284.70

Kislovodsk

Object: Altitude: 43.02 Azimuth: 80.62

Sun: Altitude: -5.05 Azimuth: 125.54

Moon: Altitude: -49.79 Azimuth: 238.60

Tavrida

Object: Altitude: 48.71 Azimuth: 72.22

Sun: Altitude: 0.61 Azimuth: 119.50

Moon: Altitude: -54.05 Azimuth: 226.95

SAAO

Object: Altitude: 28.05 Azimuth: 148.78

Sun: Altitude: -17.59 Azimuth: 104.06

Moon: Altitude: -39.41 Azimuth: 343.31

IAC

Object: Altitude: 81.14 Azimuth: 307.61

Sun: Altitude: 34.83 Azimuth: 96.88

Moon: Altitude: -65.03 Azimuth: 112.91

Argentina

Object: Altitude: 10.60 Azimuth: 234.72

Sun: Altitude: 36.71 Azimuth: 170.74

Moon: Altitude: -2.09 Azimuth: 69.01

Mexico

Object: Altitude: 2.39 Azimuth: 244.82

Sun: Altitude: 58.70 Azimuth: 280.79

Moon: Altitude: 13.66 Azimuth: 60.74

Ural

Object: Altitude: 30.53 Azimuth: 85.04

Sun: Altitude: -4.05 Azimuth: 140.14

Moon: Altitude: -34.02 Azimuth: 245.88

Vostryakovo

Object: Altitude: 42.59 Azimuth: 65.83

Sun: Altitude: 3.97 Azimuth: 122.01

Moon: Altitude: -44.78 Azimuth: 223.07

Gal. latitude: 34.240250 Gal. longitude: 203.059742

Dist. to Sun: 62.892291

Dist. to Moon: 163.454839

Moon coord.: (326.635999 d, -16.561949 d)

Sun coord.: (61.944586 d, 20.940301 d)

Lunar disk: 0.593631

Lunar phase: 79.206919

Lunar bright limb: 71.090638

No SN in this field

2025-04-27 06:54:41 (JD 2460792.787975)

Siderial time 23.787184 h

Ra 08:41:12.00 Dec 22:40:58.80
(130.300000d, 22.683000d)

Rise 2025-04-27 10:11:32

Transit 2025-04-27 18:47:11

Set 2025-04-27 03:26:47

Amur

Object: Altitude: 46.32 Azimuth: 292.81

Sun: Altitude: 34.39 Azimuth: 68.19

Moon: Altitude: 29.43 Azimuth: 75.63

Tunka

Object: Altitude: 31.09 Azimuth: 272.19

Sun: Altitude: 46.02 Azimuth: 40.50

Moon: Altitude: 42.42 Azimuth: 50.53

Kislovodsk

Object: Altitude: -8.57 Azimuth: 226.83

Sun: Altitude: 48.98 Azimuth: 306.59

Moon: Altitude: 53.48 Azimuth: 317.23

Tavrida

Object: Altitude: -12.05 Azimuth: 219.96

Sun: Altitude: 43.30 Azimuth: 298.12

Moon: Altitude: 48.30 Azimuth: 307.15

SAAO

Object: Altitude: -62.05 Azimuth: 282.76

Sun: Altitude: 20.32 Azimuth: 237.54

Moon: Altitude: 25.96 Azimuth: 231.33

IAC

Object: Altitude: -38.49 Azimuth: 171.01

Sun: Altitude: 4.87 Azimuth: 256.91

Moon: Altitude: 12.04 Azimuth: 260.56

Argentina

Object: Altitude: -36.16 Azimuth: 96.25

Sun: Altitude: -53.09 Azimuth: 290.94

Moon: Altitude: -46.43 Azimuth: 284.00

Mexico

Object: Altitude: 20.88 Azimuth: 104.60

Sun: Altitude: -44.78 Azimuth: 172.09

Moon: Altitude: -44.99 Azimuth: 183.42

Ural

Object: Altitude: 7.99 Azimuth: 240.05

Sun: Altitude: 45.14 Azimuth: 337.92

Moon: Altitude: 46.47 Azimuth: 349.28

Vostryakovo

Object: Altitude: -2.41 Azimuth: 222.23

Sun: Altitude: 39.34 Azimuth: 310.03

Moon: Altitude: 42.72 Azimuth: 319.69

Gal. latitude: 34.240250 Gal. longitude: 203.059742

Dist. to Sun: 89.834118

Dist. to Moon: 97.116143

Moon coord.: (26.314192 d, 13.891627 d)

Sun coord.: (34.580605 d, 13.829371 d)

Lunar disk: 0.004929

Lunar phase: 171.948217

Lunar bright limb: 89.398394

No SN in this field
Recent coverage and limits telegrams

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

  ID = 1000
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 GRB190525.67 (trigger No 580493060,  8h 41m 12.00s , +22d 40m 58.80s, R=29.13) errorbox  1933 sec after trigger time at 2019-05-25 16:36:28 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenit distance = 59 deg. The sun  altitude  is -11.1 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB190525.67 errorbox  17235 sec after trigger time at 2019-05-25 20:51:30 UT, with upper limit up to  18.7 mag. Observations started at twilight.  The observations began at zenit distance = 45 deg. The sun  altitude  is -12.6 deg. 

The galactic latitude b = -60 deg., longitude l = 98 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1028461

We obtain a following upper limits.  

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

    2023 | 2019-05-25 16:36:28 |         MASTER-SAAO | (  8h 34m 40.26s , - 3d 55m 34.32s) |   V |   180 | 17.4 |        
    2236 | 2019-05-25 16:40:00 |         MASTER-SAAO | (  8h 35m 28.29s , - 3d 55m 19.81s) |   C |   180 | 18.0 |        
    2416 | 2019-05-25 16:40:00 |         MASTER-SAAO | (  8h 35m 28.30s , - 3d 55m 19.73s) |   C |   540 | 19.0 |  Coadd 
    3094 | 2019-05-25 16:54:19 |         MASTER-SAAO | (  8h 35m 28.52s , - 3d 55m 56.34s) |   V |   180 | 18.2 |        
    3306 | 2019-05-25 16:57:50 |         MASTER-SAAO | (  8h 35m 28.55s , - 3d 55m 44.06s) |   C |   180 | 18.7 |        
   17325 | 2019-05-25 20:51:30 |          MASTER-IAC | (  7h  7m 15.54s , + 2d  0m 50.25s) |   C |   180 | 17.2 |        
   17832 | 2019-05-25 20:59:56 |          MASTER-IAC | (  7h 14m 59.47s , + 0d  1m 00.51s) |   C |   180 | 18.0 |        
   18050 | 2019-05-25 21:03:35 |          MASTER-IAC | (  7h  7m 15.30s , + 2d  0m 43.78s) |   C |   180 | 18.1 |        
   18270 | 2019-05-25 21:07:15 |          MASTER-IAC | (  7h 15m 15.88s , + 2d  1m 18.42s) |   C |   180 | 18.7 |        
   18493 | 2019-05-25 21:10:57 |          MASTER-IAC | (  7h 14m 59.33s , + 0d  1m 15.28s) |   C |   180 | 18.3 |        
   18933 | 2019-05-25 21:18:17 |          MASTER-IAC | (  7h 15m 15.56s , + 2d  1m 12.54s) |   C |   180 | 18.6 |        
   89528 | 2019-05-26 16:54:53 |         MASTER-SAAO | (  8h 34m 22.34s , - 3d 56m 14.82s) |   C |   180 | 13.3 |        
   90661 | 2019-05-26 17:13:46 |         MASTER-SAAO | (  8h 35m 25.73s , - 3d 56m 41.14s) |   C |   180 | 12.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 998
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 GRB190525.67 (trigger No 580493060,  8h 41m 12.00s , +22d 40m 58.80s, R=29.13) errorbox  1933 sec after trigger time at 2019-05-25 16:36:28 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenit distance = 59 deg. The sun  altitude  is -11.1 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB190525.67 errorbox  17235 sec after trigger time at 2019-05-25 20:51:30 UT, with upper limit up to  18.7 mag. Observations started at twilight.  The observations began at zenit distance = 45 deg. The sun  altitude  is -12.6 deg. 

The galactic latitude b = -60 deg., longitude l = 98 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1028461

We obtain a following upper limits.  

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

    2023 | 2019-05-25 16:36:28 |         MASTER-SAAO | (  8h 34m 40.26s , - 3d 55m 34.32s) |   V |   180 | 17.4 |        
    2236 | 2019-05-25 16:40:00 |         MASTER-SAAO | (  8h 35m 28.29s , - 3d 55m 19.81s) |   C |   180 | 18.0 |        
    2416 | 2019-05-25 16:40:00 |         MASTER-SAAO | (  8h 35m 28.30s , - 3d 55m 19.73s) |   C |   540 | 19.0 |  Coadd 
    3094 | 2019-05-25 16:54:19 |         MASTER-SAAO | (  8h 35m 28.52s , - 3d 55m 56.34s) |   V |   180 | 18.2 |        
    3306 | 2019-05-25 16:57:50 |         MASTER-SAAO | (  8h 35m 28.55s , - 3d 55m 44.06s) |   C |   180 | 18.7 |        
   17325 | 2019-05-25 20:51:30 |          MASTER-IAC | (  7h  7m 15.54s , + 2d  0m 50.25s) |   C |   180 | 17.2 |        
   17832 | 2019-05-25 20:59:56 |          MASTER-IAC | (  7h 14m 59.47s , + 0d  1m 00.51s) |   C |   180 | 18.0 |        
   18050 | 2019-05-25 21:03:35 |          MASTER-IAC | (  7h  7m 15.30s , + 2d  0m 43.78s) |   C |   180 | 18.1 |        
   18270 | 2019-05-25 21:07:15 |          MASTER-IAC | (  7h 15m 15.88s , + 2d  1m 18.42s) |   C |   180 | 18.7 |        
   18493 | 2019-05-25 21:10:57 |          MASTER-IAC | (  7h 14m 59.33s , + 0d  1m 15.28s) |   C |   180 | 18.3 |        
   18933 | 2019-05-25 21:18:17 |          MASTER-IAC | (  7h 15m 15.56s , + 2d  1m 12.54s) |   C |   180 | 18.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 996
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 GRB190525.67 (trigger No 580493060,  8h 41m 12.00s , +22d 40m 58.80s, R=29.13) errorbox  1933 sec after trigger time at 2019-05-25 16:36:28 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenit distance = 59 deg. The sun  altitude  is -11.1 deg. 

The galactic latitude b = -60 deg., longitude l = 98 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1028461

We obtain a following upper limits.  

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

    2023 | 2019-05-25 16:36:28 |         MASTER-SAAO | (  8h 34m 40.26s , - 3d 55m 34.32s) |   V |   180 | 17.4 |        
    2236 | 2019-05-25 16:40:00 |         MASTER-SAAO | (  8h 35m 28.29s , - 3d 55m 19.81s) |   C |   180 | 18.0 |        
    2416 | 2019-05-25 16:40:00 |         MASTER-SAAO | (  8h 35m 28.30s , - 3d 55m 19.73s) |   C |   540 | 19.0 |  Coadd 
    3094 | 2019-05-25 16:54:19 |         MASTER-SAAO | (  8h 35m 28.52s , - 3d 55m 56.34s) |   V |   180 | 18.2 |        
    3306 | 2019-05-25 16:57:50 |         MASTER-SAAO | (  8h 35m 28.55s , - 3d 55m 44.06s) |   C |   180 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 995
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 GRB190525.67 (trigger No 580493060,  8h 41m 12.00s , +22d 40m 58.80s, R=29.13) errorbox  1933 sec after trigger time at 2019-05-25 16:36:28 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenit distance = 59 deg. The sun  altitude  is -11.1 deg. 

The galactic latitude b = -60 deg., longitude l = 98 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1028461

We obtain a following upper limits.  

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

    2023 | 2019-05-25 16:36:28 |         MASTER-SAAO | (  8h 34m 40.26s , - 3d 55m 34.32s) |   V |   180 | 17.4 |        
    2236 | 2019-05-25 16:40:00 |         MASTER-SAAO | (  8h 35m 28.29s , - 3d 55m 19.81s) |   C |   180 | 18.0 |        
    2416 | 2019-05-25 16:40:00 |         MASTER-SAAO | (  8h 35m 28.30s , - 3d 55m 19.73s) |   C |   540 | 19.0 |  Coadd 
    3094 | 2019-05-25 16:54:19 |         MASTER-SAAO | (  8h 35m 28.52s , - 3d 55m 56.34s) |   V |   180 | 18.2 |        
    3306 | 2019-05-25 16:57:50 |         MASTER-SAAO | (  8h 35m 28.55s , - 3d 55m 44.06s) |   C |   180 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025