MASTER Net MASTER Database: GRB201221.30 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 GRB201221.30
Trignum 1013852
Trigger time 2020-12-21 07:11:27
Notice time 2020-12-21 07:24:40.308075
Coord, eb (14h 17m 55.20s , -45d 25m 01.2s) , 0.000611111
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
1507794 2020-12-21 07:24:40.308075 14h 17m 55.20s -45d 25m 01.2s SWIFT 0.000611111 alert 1013852 6 67 alert
1507781 2020-12-21 07:10:34.042135 14h 17m 54.48s -45d 24m 39.6s SWIFT 0.05 alert 1013852 3 61 alert

DAYS:

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

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

2020-12-21 07:11:27 (JD 2459204.799618)

Siderial time 15.720192 h

Ra 14:17:55.20 Dec -45:25:01.20
(214.480000d, -45.417000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -45.25 Azimuth: 68.37

Sun: Altitude: 1.17 Azimuth: 49.62

Moon: Altitude: 26.43 Azimuth: 327.58

Tunka

Object: Altitude: -32.37 Azimuth: 56.07

Sun: Altitude: 9.79 Azimuth: 29.29

Moon: Altitude: 14.75 Azimuth: 304.69

Kislovodsk

Object: Altitude: -2.16 Azimuth: 18.09

Sun: Altitude: 17.79 Azimuth: 332.30

Moon: Altitude: -22.80 Azimuth: 258.94

Tavrida

Object: Altitude: -1.50 Azimuth: 12.34

Sun: Altitude: 13.78 Azimuth: 325.03

Moon: Altitude: -28.44 Azimuth: 251.81

SAAO

Object: Altitude: 76.50 Azimuth: 13.70

Sun: Altitude: 44.85 Azimuth: 271.93

Moon: Altitude: -31.54 Azimuth: 305.73

IAC

Object: Altitude: 10.48 Azimuth: 337.25

Sun: Altitude: -9.13 Azimuth: 291.78

Moon: Altitude: -68.71 Azimuth: 199.41

Argentina

Object: Altitude: 24.89 Azimuth: 309.51

Sun: Altitude: -23.18 Azimuth: 320.79

Moon: Altitude: -30.84 Azimuth: 55.78

Mexico

Object: Altitude: -46.60 Azimuth: 304.98

Sun: Altitude: -82.23 Azimuth: 168.01

Moon: Altitude: -6.81 Azimuth: 84.67

Ural

Object: Altitude: -18.62 Azimuth: 30.50

Sun: Altitude: 8.91 Azimuth: 349.03

Moon: Altitude: -10.53 Azimuth: 268.59

Vostryakovo

Object: Altitude: -12.42 Azimuth: 15.28

Sun: Altitude: 6.14 Azimuth: 329.33

Moon: Altitude: -22.66 Azimuth: 250.28

Gal. latitude: 14.424508 Gal. longitude: 318.914725

Dist. to Sun: 49.303600

Dist. to Moon: 115.726464

Moon coord.: (354.673357 d, -8.058081 d)

Sun coord.: (269.554253 d, -23.442785 d)

Lunar disk: 0.434712

Lunar phase: 97.502893

Lunar bright limb: 247.257771

No SN in this field

2020-12-21 07:24:40 (JD 2459204.808796)

Siderial time 15.941073 h

Ra 14:17:55.20 Dec -45:25:01.20
(214.480000d, -45.417000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -47.22 Azimuth: 70.14

Sun: Altitude: -0.47 Azimuth: 52.17

Moon: Altitude: 27.52 Azimuth: 330.93

Tunka

Object: Altitude: -34.09 Azimuth: 57.95

Sun: Altitude: 8.74 Azimuth: 32.17

Moon: Altitude: 16.39 Azimuth: 307.52

Kislovodsk

Object: Altitude: -2.94 Azimuth: 20.28

Sun: Altitude: 18.84 Azimuth: 335.29

Moon: Altitude: -20.48 Azimuth: 261.28

Tavrida

Object: Altitude: -2.05 Azimuth: 14.60

Sun: Altitude: 15.07 Azimuth: 327.86

Moon: Altitude: -26.23 Azimuth: 254.37

SAAO

Object: Altitude: 75.63 Azimuth: 22.65

Sun: Altitude: 47.64 Azimuth: 270.21

Moon: Altitude: -29.34 Azimuth: 303.08

IAC

Object: Altitude: 11.55 Azimuth: 339.35

Sun: Altitude: -6.45 Azimuth: 293.20

Moon: Altitude: -67.54 Azimuth: 207.36

Argentina

Object: Altitude: 27.08 Azimuth: 308.62

Sun: Altitude: -21.36 Azimuth: 318.17

Moon: Altitude: -33.09 Azimuth: 53.14

Mexico

Object: Altitude: -44.28 Azimuth: 305.04

Sun: Altitude: -82.27 Azimuth: 190.62

Moon: Altitude: -9.53 Azimuth: 86.33

Ural

Object: Altitude: -19.57 Azimuth: 32.75

Sun: Altitude: 9.20 Azimuth: 352.08

Moon: Altitude: -8.75 Azimuth: 271.26

Vostryakovo

Object: Altitude: -12.96 Azimuth: 17.60

Sun: Altitude: 7.05 Azimuth: 332.24

Moon: Altitude: -20.89 Azimuth: 253.12

Gal. latitude: 14.424508 Gal. longitude: 318.914725

Dist. to Sun: 49.310677

Dist. to Moon: 115.816594

Moon coord.: (354.776999 d, -8.013122 d)

Sun coord.: (269.564442 d, -23.442813 d)

Lunar disk: 0.435601

Lunar phase: 97.400177

Lunar bright limb: 247.244051

No SN in this field

2020-12-21 08:24:40 (JD 2459204.850463)

Siderial time 16.943811 h

Ra 14:17:55.20 Dec -45:25:01.20
(214.480000d, -45.417000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -56.46 Azimuth: 78.43

Sun: Altitude: -8.55 Azimuth: 63.34

Moon: Altitude: 31.06 Azimuth: 346.99

Tunka

Object: Altitude: -42.30 Azimuth: 66.37

Sun: Altitude: 2.98 Azimuth: 44.73

Moon: Altitude: 23.02 Azimuth: 321.15

Kislovodsk

Object: Altitude: -7.55 Azimuth: 29.80

Sun: Altitude: 22.12 Azimuth: 349.55

Moon: Altitude: -9.85 Azimuth: 271.42

Tavrida

Object: Altitude: -5.64 Azimuth: 24.54

Sun: Altitude: 19.64 Azimuth: 341.46

Moon: Altitude: -15.91 Azimuth: 265.21

SAAO

Object: Altitude: 68.07 Azimuth: 46.92

Sun: Altitude: 60.26 Azimuth: 260.78

Moon: Altitude: -18.58 Azimuth: 292.52

IAC

Object: Altitude: 15.12 Azimuth: 349.55

Sun: Altitude: 5.35 Azimuth: 300.28

Moon: Altitude: -58.91 Azimuth: 233.54

Argentina

Object: Altitude: 37.29 Azimuth: 305.53

Sun: Altitude: -12.01 Azimuth: 307.63

Moon: Altitude: -42.19 Azimuth: 38.94

Mexico

Object: Altitude: -33.81 Azimuth: 306.68

Sun: Altitude: -73.47 Azimuth: 246.64

Moon: Altitude: -21.90 Azimuth: 94.08

Ural

Object: Altitude: -24.58 Azimuth: 42.76

Sun: Altitude: 9.34 Azimuth: 6.01

Moon: Altitude: -0.73 Azimuth: 283.31

Vostryakovo

Object: Altitude: -16.26 Azimuth: 27.95

Sun: Altitude: 10.10 Azimuth: 345.80

Moon: Altitude: -12.61 Azimuth: 265.48

Gal. latitude: 14.424508 Gal. longitude: 318.914725

Dist. to Sun: 49.342815

Dist. to Moon: 116.225066

Moon coord.: (355.246962 d, -7.808811 d)

Sun coord.: (269.610697 d, -23.442933 d)

Lunar disk: 0.439636

Lunar phase: 96.934155

Lunar bright limb: 247.182875

No SN in this field

2025-05-03 00:33:17 (JD 2460798.523113)

Siderial time 17.807372 h

Ra 14:17:55.20 Dec -45:25:01.20
(214.480000d, -45.417000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -64.65 Azimuth: 86.49

Sun: Altitude: 41.01 Azimuth: 299.35

Moon: Altitude: 3.16 Azimuth: 231.80

Tunka

Object: Altitude: -49.82 Azimuth: 73.74

Sun: Altitude: 26.06 Azimuth: 277.91

Moon: Altitude: -6.03 Azimuth: 212.38

Kislovodsk

Object: Altitude: -12.73 Azimuth: 37.38

Sun: Altitude: -14.05 Azimuth: 231.45

Moon: Altitude: -16.90 Azimuth: 157.29

Tavrida

Object: Altitude: -10.04 Azimuth: 32.56

Sun: Altitude: -17.91 Azimuth: 224.13

Moon: Altitude: -13.31 Azimuth: 150.00

SAAO

Object: Altitude: 59.55 Azimuth: 54.16

Sun: Altitude: -57.84 Azimuth: 294.24

Moon: Altitude: -49.65 Azimuth: 92.99

IAC

Object: Altitude: 16.27 Azimuth: 358.91

Sun: Altitude: -45.58 Azimuth: 170.26

Moon: Altitude: 6.56 Azimuth: 115.93

Argentina

Object: Altitude: 46.33 Azimuth: 304.34

Sun: Altitude: -33.53 Azimuth: 88.19

Moon: Altitude: 18.70 Azimuth: 138.80

Mexico

Object: Altitude: -25.07 Azimuth: 309.51

Sun: Altitude: 17.17 Azimuth: 98.18

Moon: Altitude: 84.26 Azimuth: 26.62

Ural

Object: Altitude: -29.73 Azimuth: 51.18

Sun: Altitude: 2.15 Azimuth: 244.13

Moon: Altitude: -6.85 Azimuth: 173.46

Vostryakovo

Object: Altitude: -20.19 Azimuth: 36.58

Sun: Altitude: -8.64 Azimuth: 225.68

Moon: Altitude: -5.04 Azimuth: 154.08

Gal. latitude: 14.424508 Gal. longitude: 318.914725

Dist. to Sun: 149.809901

Dist. to Moon: 113.663627

Moon coord.: (116.254256 d, 25.892238 d)

Sun coord.: (40.047588 d, 15.592319 d)

Lunar disk: 0.339140

Lunar phase: 108.766977

Lunar bright limb: 278.637715

No SN in this field
Recent coverage and limits telegrams

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

  ID = 3514
TYPE = 35
DAYS = 1


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 201221A ( K. L. Page et al., GCN 29096) errorbox 76 sec after trigger time at 2020-12-21 07:10:17 UT, with upper limit up to  18.9 mag. The observations began at zenith distance = 65 deg. The sun  altitude  is -23.8 deg. 

The galactic latitude b = 14 deg., longitude l = 319 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1507781

We obtain a following upper limits.  

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

      86 |         MASTER-OAFA |   C |    20 | 17.3 |        
     111 |         MASTER-OAFA |   C |    70 | 17.9 |  Coadd 
     126 |         MASTER-OAFA |   C |    20 | 17.2 |        
     170 |         MASTER-OAFA |   C |    30 | 17.5 |        
     225 |         MASTER-OAFA |   C |    40 | 17.6 |        
     285 |         MASTER-OAFA |   C |   160 | 18.3 |  Coadd 
     289 |         MASTER-OAFA |   C |    50 | 17.7 |        
     369 |         MASTER-OAFA |   C |    70 | 17.8 |        
     463 |         MASTER-OAFA |   C |    80 | 17.9 |        
     578 |         MASTER-OAFA |   C |   310 | 18.6 |  Coadd 
     573 |         MASTER-OAFA |   C |   100 | 18.0 |        
     707 |         MASTER-OAFA |   C |   130 | 18.1 |        
     872 |         MASTER-OAFA |   C |   160 | 18.2 |        
    1052 |         MASTER-OAFA |   C |   520 | 18.8 |  Coadd 
    1061 |         MASTER-OAFA |   C |   180 | 18.1 |        
    1261 |         MASTER-OAFA |   C |   180 | 18.3 |        
    1460 |         MASTER-OAFA |   C |   180 | 18.3 |        
    1640 |         MASTER-OAFA |   C |   540 | 18.8 |  Coadd 
    1660 |         MASTER-OAFA |   C |   180 | 18.4 |        
    1859 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2059 |         MASTER-OAFA |   C |   180 | 18.4 |        
    2239 |         MASTER-OAFA |   C |   540 | 18.9 |  Coadd 
    2259 |         MASTER-OAFA |   C |   180 | 18.4 |        
    2458 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2657 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2837 |         MASTER-OAFA |   C |   540 | 18.7 |  Coadd 
    2857 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3056 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3256 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3436 |         MASTER-OAFA |   C |   540 | 18.6 |  Coadd 
    3455 |         MASTER-OAFA |   C |   180 | 18.0 |        
    3655 |         MASTER-OAFA |   C |   180 | 18.0 |        
    3854 |         MASTER-OAFA |   C |   180 | 17.9 |        
    4034 |         MASTER-OAFA |   C |   540 | 18.3 |  Coadd 
    4054 |         MASTER-OAFA |   C |   180 | 17.8 |        
    4253 |         MASTER-OAFA |   C |   180 | 17.6 |        
    4452 |         MASTER-OAFA |   C |   180 | 17.4 |        
    4632 |         MASTER-OAFA |   C |   540 | 17.6 |  Coadd 
    4652 |         MASTER-OAFA |   C |   180 | 17.2 |        
    4851 |         MASTER-OAFA |   C |   180 | 16.9 |        
   82961 |         MASTER-OAFA |   C |   180 | 18.1 |        
   83740 |         MASTER-OAFA |   C |   180 | 18.3 |        
   84034 |         MASTER-OAFA |   C |   180 | 18.4 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3503
TYPE = 35
DAYS = 0.5


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 201221A ( K. L. Page et al., GCN 29096) errorbox 76 sec after trigger time at 2020-12-21 07:10:17 UT, with upper limit up to  18.9 mag. The observations began at zenith distance = 65 deg. The sun  altitude  is -23.8 deg. 

The galactic latitude b = 14 deg., longitude l = 319 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1507781

We obtain a following upper limits.  

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

      86 |         MASTER-OAFA |   C |    20 | 17.3 |        
     111 |         MASTER-OAFA |   C |    70 | 17.9 |  Coadd 
     126 |         MASTER-OAFA |   C |    20 | 17.2 |        
     170 |         MASTER-OAFA |   C |    30 | 17.5 |        
     225 |         MASTER-OAFA |   C |    40 | 17.6 |        
     285 |         MASTER-OAFA |   C |   160 | 18.3 |  Coadd 
     289 |         MASTER-OAFA |   C |    50 | 17.7 |        
     369 |         MASTER-OAFA |   C |    70 | 17.8 |        
     463 |         MASTER-OAFA |   C |    80 | 17.9 |        
     578 |         MASTER-OAFA |   C |   310 | 18.6 |  Coadd 
     573 |         MASTER-OAFA |   C |   100 | 18.0 |        
     707 |         MASTER-OAFA |   C |   130 | 18.1 |        
     872 |         MASTER-OAFA |   C |   160 | 18.2 |        
    1052 |         MASTER-OAFA |   C |   520 | 18.8 |  Coadd 
    1061 |         MASTER-OAFA |   C |   180 | 18.1 |        
    1261 |         MASTER-OAFA |   C |   180 | 18.3 |        
    1460 |         MASTER-OAFA |   C |   180 | 18.3 |        
    1640 |         MASTER-OAFA |   C |   540 | 18.8 |  Coadd 
    1660 |         MASTER-OAFA |   C |   180 | 18.4 |        
    1859 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2059 |         MASTER-OAFA |   C |   180 | 18.4 |        
    2239 |         MASTER-OAFA |   C |   540 | 18.9 |  Coadd 
    2259 |         MASTER-OAFA |   C |   180 | 18.4 |        
    2458 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2657 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2837 |         MASTER-OAFA |   C |   540 | 18.7 |  Coadd 
    2857 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3056 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3256 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3436 |         MASTER-OAFA |   C |   540 | 18.6 |  Coadd 
    3455 |         MASTER-OAFA |   C |   180 | 18.0 |        
    3655 |         MASTER-OAFA |   C |   180 | 18.0 |        
    3854 |         MASTER-OAFA |   C |   180 | 17.9 |        
    4034 |         MASTER-OAFA |   C |   540 | 18.3 |  Coadd 
    4054 |         MASTER-OAFA |   C |   180 | 17.8 |        
    4253 |         MASTER-OAFA |   C |   180 | 17.6 |        
    4452 |         MASTER-OAFA |   C |   180 | 17.4 |        
    4632 |         MASTER-OAFA |   C |   540 | 17.6 |  Coadd 
    4652 |         MASTER-OAFA |   C |   180 | 17.2 |        
    4851 |         MASTER-OAFA |   C |   180 | 16.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3489
TYPE = 35
DAYS = 0.1


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 201221A ( K. L. Page et al., GCN 29096) errorbox 76 sec after trigger time at 2020-12-21 07:10:17 UT, with upper limit up to  18.9 mag. The observations began at zenith distance = 65 deg. The sun  altitude  is -23.8 deg. 

The galactic latitude b = 14 deg., longitude l = 319 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1507781

We obtain a following upper limits.  

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

      86 |         MASTER-OAFA |   C |    20 | 17.3 |        
     111 |         MASTER-OAFA |   C |    70 | 17.9 |  Coadd 
     126 |         MASTER-OAFA |   C |    20 | 17.2 |        
     170 |         MASTER-OAFA |   C |    30 | 17.5 |        
     225 |         MASTER-OAFA |   C |    40 | 17.6 |        
     285 |         MASTER-OAFA |   C |   160 | 18.3 |  Coadd 
     289 |         MASTER-OAFA |   C |    50 | 17.7 |        
     369 |         MASTER-OAFA |   C |    70 | 17.8 |        
     463 |         MASTER-OAFA |   C |    80 | 17.9 |        
     578 |         MASTER-OAFA |   C |   310 | 18.6 |  Coadd 
     573 |         MASTER-OAFA |   C |   100 | 18.0 |        
     707 |         MASTER-OAFA |   C |   130 | 18.1 |        
     872 |         MASTER-OAFA |   C |   160 | 18.2 |        
    1052 |         MASTER-OAFA |   C |   520 | 18.8 |  Coadd 
    1061 |         MASTER-OAFA |   C |   180 | 18.1 |        
    1261 |         MASTER-OAFA |   C |   180 | 18.3 |        
    1460 |         MASTER-OAFA |   C |   180 | 18.3 |        
    1640 |         MASTER-OAFA |   C |   540 | 18.8 |  Coadd 
    1660 |         MASTER-OAFA |   C |   180 | 18.4 |        
    1859 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2059 |         MASTER-OAFA |   C |   180 | 18.4 |        
    2239 |         MASTER-OAFA |   C |   540 | 18.9 |  Coadd 
    2259 |         MASTER-OAFA |   C |   180 | 18.4 |        
    2458 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2657 |         MASTER-OAFA |   C |   180 | 18.3 |        
    2837 |         MASTER-OAFA |   C |   540 | 18.7 |  Coadd 
    2857 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3056 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3256 |         MASTER-OAFA |   C |   180 | 18.3 |        
    3436 |         MASTER-OAFA |   C |   540 | 18.6 |  Coadd 
    3455 |         MASTER-OAFA |   C |   180 | 18.0 |        
    3655 |         MASTER-OAFA |   C |   180 | 18.0 |        
    3854 |         MASTER-OAFA |   C |   180 | 17.9 |        
    4034 |         MASTER-OAFA |   C |   540 | 18.3 |  Coadd 
    4054 |         MASTER-OAFA |   C |   180 | 17.8 |        
    4253 |         MASTER-OAFA |   C |   180 | 17.6 |        
    4452 |         MASTER-OAFA |   C |   180 | 17.4 |        
    4632 |         MASTER-OAFA |   C |   540 | 17.6 |  Coadd 
    4652 |         MASTER-OAFA |   C |   180 | 17.2 |        
    4851 |         MASTER-OAFA |   C |   180 | 16.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3488
TYPE = 34
DAYS = 0


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 201221A ( K. L. Page et al., GCN 29096) errorbox 76 sec after trigger time at 2020-12-21 07:10:17 UT, with upper limit up to  17.6 mag. The observations began at zenith distance = 65 deg. The sun  altitude  is -23.8 deg. 

The galactic latitude b = 14 deg., longitude l = 319 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1507781

We obtain a following upper limits.  

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

      86 |         MASTER-OAFA |   C |    20 | 17.3 |        
     126 |         MASTER-OAFA |   C |    20 | 17.2 |        
     170 |         MASTER-OAFA |   C |    30 | 17.5 |        
     225 |         MASTER-OAFA |   C |    40 | 17.6 |        
Filter C is a clear (unfiltred) band. 


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



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  ID = 3487
TYPE = 35
DAYS = 0


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 201221A ( K. L. Page et al., GCN 29096) errorbox 76 sec after trigger time at 2020-12-21 07:10:17 UT, with upper limit up to  17.6 mag. The observations began at zenith distance = 65 deg. The sun  altitude  is -23.8 deg. 

The galactic latitude b = 14 deg., longitude l = 319 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1507781

We obtain a following upper limits.  

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

      86 |         MASTER-OAFA |   C |    20 | 17.3 |        
     126 |         MASTER-OAFA |   C |    20 | 17.2 |        
     170 |         MASTER-OAFA |   C |    30 | 17.5 |        
     225 |         MASTER-OAFA |   C |    40 | 17.6 |        
Filter C is a clear (unfiltred) band. 


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

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