Gamma Ray Bursts

The "Pi of the Sky" apparatus continuously monitors the SWIFT FOV.
10 s exposures of a 21ox 21o field are taken by two cameras.
Twice a night the whole sky is scanned (24 fields x 2 cameras x 2 exposures x 10s = 50min).
Targets of GCN alerts are also followed automatically.

Limiting magnitude for single images is 12-13m, whereas for 20 coadded images is 13-14m (depending on the Moon phase, etc.)

GRB observed from 2004-07 to 2005-08

Statistics of "Pi of the Sky" observations
226 GRB observed by satellites from 2006.06.01
apparatus
off
North
hemisphere
daytimebelow
horizon
cloudsoutside
FOV
inside
FOV
15121083911392

Gamma / X-ray satellite observations Optical "Pi of the Sky" observations
GRBUTRA   Decerroralert before GRBduring GRBafter GRBGCN
 08 09 03  1:12:055h47m1s  +51°20'3' Swift  apparatus off   
 08 08 1213:10:12 23h47m07s  +00°19'3' Swift  daytime   
 08 08 1013:10:12 23h47m07s  +00°19'3' Swift  daytime   
 08 08 05  7:41:35 20h56m54s  -62°26'3' Swift <182s , 1 frame < 12.3m
3 frames: <12.5m
outside FOV >83s , 1 frame < 12.2m
20 frames: <12.5m
8063
 08 08 0423:20:14 21h54m40s  -53°11'3' Swift  outside FOV >101s , 1 frame < 12.0m
20 frames: <12.5m
 
 08 08 02  18h02m54s  -32°20'3' Swift  daytime   
 08 07 27C23:07:35 02h10m35s  +64°09'3' Swift  North hemisphere   
 08 07 27B  8:13:24 18h27m29s  +01°10'3' Swift  outside FOV >128 s, without limits
because of clouds
 
 08 07 27  5:57:39 13h53m33s  -18°33'3' Swift  below horizon   
 08 07 2510:26:14 08h06m52s  -13°59'3' Swift  daytime   
 08 07 23B13:23:28 11h47m10s  -60°14'3' INTEGRAL  daytime   
 08 07 23A  4:19:24 18h18m03s  -6°55'3' Swift  outside FOV >129 s, 1 frame: <12.2m
20 frames: <12.5m
 
 08 07 2110:25:16 14h57m53s  -11°43'3' Swift  apparatus off   
 08 07 1417:52:56 12h32m26s  -60°17'3' Swift  daytime   
 08 07 10  7:12:13 00h33m02s  +19°30'3' Swift  clouds  
 08 07 07  8:27:53 02h10m32s  +33°06'3' Swift  outside FOV >468 s, 1 frame: <11m
20 frames: <12m
 
 08 07 0319:27:08 6h47m28s  -63°13'3' Swift  daytime   
 08 07 02B  1:10:26 23h42m24s  -05°29'3' Swift  below horizon   
 08 07 02A11:50:43 20h51m25s  +72°18'3' Swift  North hemisphere   
 08 07 01A10:13:37 3h03m21s  +75°29'3' Swift  North hemisphere   
 08 06 2512:28:31 19h53m46s  +56°16'3' AGILE  daytime   
 08 06 2310:32:19 15h50m38s  -62°2'3' Swift  clouds   
 08 06 13B11:12:37 11h35m11s  -07°6'3' Swift  daytime   
 08 06 13  9:35:40 14h13m01s  +05°09'2.8' INTEGRAL  below horizon   
 08 05 2321:21:51 01h22m56s  -64°03'3' Swift  daytime   
 08 05 2022:20:24 18h40m46s  -55°00'3' Swift  daytime   
 08 05 1721:22:51 06h49m01s  +50°44'3' Swift  daytime   
 08 05 16  0:17:07 08h02m31s  -26°11'3' Swift  outside FOV   
 08 05 15  6:01:13 00h12m36s  +32°36'3' Swift  below horizon   
 08 05 14B  9:55:56 21h31m50.8s  +0°44'3' Super Agile  outside FOV   
 08 05 07  7:45:00 15h34m53s  +56°25'3' Agile  below horizon   
 08 05 0617:46:21 21h57m44s  +39°00'3' Swift  daytime   
 08 05 0312:26:13 19h06m28s  +68°47'3' Swift  North hemisphere   
 08 04 3019:53:02 11h01m17s  +51°41'3' Swift  daytime   
 08 04 2613:23:22 01h46m18s  +69°29'3' Swift  North hemisphere   
 08 04 1422:33:35 18h08m30s  -18°52'3.25' Integral  daytime   
 08 04 13  8:51:12 21h44m32s  -19°58'3' Swift  outside FOV   
 08 04 13  2:54:19 19h09m10s  -27°41'3' Swift  outside FOV >240s, 1 frame: >12m
20 frames: >12.5m
 
 08 04 1121:15:32 02h32m04s  -71°20'3' Swift  daytime   
 08 04 09  1:22:57 05h37m20s  +05°05'3' Swift  outside FOV >96s, 1 frame: >12m
20 frames: >12.5m
 
 08 04 0818:12:48 07h38m43s  +33°18'3' SuperAGILE  daytime   
 08 03 30  3:41:16 11h17m12s  +30°34'3' Swift  outside FOV   
 08 03 28  8:03:04 05h21m55s  +47°31'3' Swift  below horizon   
 08 03 25  4:09:17 18h31m35s  +36°31'3' Swift  below horizon   
 08 03 20  4:37:38 11h51m07s  +57°9'3' Swift  outside FOV >262s, 1 frame: >10.7m
20 frames: >11.7m
 
 08 03 19D17:05:09 06h37m55s  +23°56'3' Swift  daytime   
 08 03 19C12:25:56 17h15m54s  +55°25'3' Swift  daytime   
 08 03 19B  6:12:49 14h31m42s  +36°18'3' Swift  ~10m >12s: ~6m7439
 08 03 19A  5:45:42 13h45m25s  +44°5'3' Swift  outside FOV >150s, 1 frame: >11.5m
20 frames: >11.8m
 
 08 03 15  2:25:01 10h20m44s  +41°44'3' Swift  outside FOV >136s, 1 frame: >11.8m
20 frames: >12.5m
 
 08 03 10  8:37:58 14h40m19s  -00°10'3' Swift  outside FOV >99s, 1 frame: >12.4m 
 08 03 0711:23:30 09h06m32s  +35°10'3' Swift  daytime   
 08 03 03  9:10:35 07h28m18s  -70°14'3' Swift  outside FOV >294s, 1 frame: >11.95m
20 frames: > 12.45m
 
 08 02 29B23:33:01 13h16m53s  -64°53'3' SuperAgile  daytime   
 08 02 2917:04:59 15h12m52s  -14°43'3' Swift  daytime   
 08 02 18B23:57:47 11h51m48s  -53°06'3' Swift  daytime   
 08 02 1820:08:42 23h43m41s  +12°10'3' Swift  daytime   
 08 02 1217:34:33 15h24m26s  -22°45'3' Swift  daytime   
 08 02 11  7:23:40 error box: 02h55m27  59°28'
02h54m59  59°55'
02h56m19  60°36'
02h56m46  60°09'
Many satellites  below horizon   
 08 02 10  7:50:05 16h45m05s  +13°50'3' Swift  outside FOV >635s, 1 frame: >12.5m
20 frames: >13.2m
 
 08 02 0721:30:21 13h50m03s  +07°31'3' Swift  daytime   
 08 02 05  7:55:51 06h32m53s  +62°46'3' Swift  North hemisphere   
 08 01 3011:13:02 17h26m42s  -53°11'2.6' Swift  daytime   
 08 01 29  6:06:45 07h01m07s  -07°50'3' Swift  outside FOV >145s, 1 frame: >11.8m
20 frames: >12.5m
 
 08 01 23  4:21:57 22h35m43s  -64°53'3' Swift  outside FOV   
 08 01 2218:32:44 error box: 12h47m18  -27°31'
12h47m09  -27°50'
12h43m31  -26°31'
12h43m39  -26°11'
IPN  daytime   
 08 01 2121:29:55 09h08m56s  41°50'3' Swift  daytime   
 08 01 2017:28:34 15h01m09s  -10°54'3.1' Integral  daytime   
 07 12 2720:13:47 03h52m29s  -55°57'3' Swift  daytime   
 07 11 29  0:03:55 14h40m22s  -26°40'3' Swift  daytime   
 07 11 22  1:23:26 18h26m20s  +47°4'3' Swift  below horizon   
 07 11 18  8:57:17 19h59m16s  +70°6'3' Swift  apparatus off   
 07 11 1714:50:06 22h20m05s  -63°26'3' Swift  daytime   
 07 11 12C18:32:57 02h36m53s  +28°23'3' Swift  apparatus off   
 07 11 12B18:23:31 17h21m13s  -80°53'3' Swift  apparatus off   
 7 11 09 20:36:05 19h19m39s  +02°2'3' Swift  daytime   
 07 11 0411:41:23 19h42m24s  +14°39'8' SuperAGILE  daytime   
 07 11 0117:53:46 03h12m46s  +62°28'3' Swift  daytime   
 07 10 31  1:06:37 00h25m50s  -58°3'3' Swift  apparatus off >7m: >13.5m 
 07 10 28B  2:43:46 23h36m39s  -31°38'3' Swift  outside FOV   
 07 10 2817:41:01 07h59m23s  +21°30'3' Swift  daytime   
 07 10 25  4:08:53 23h40m20s  +31°45'3' Swift  below horizon   
 07 10 21  9:41:33 22h42m35s  +23°43'0.500'' Swift  apparatus off   
 07 10 20  7:02:26 07h58m40s  +32°52'0.250'' Swift  outside FOV   
 07 10 18  8:37:41 10h58m28s  +53°51'2.70' Swift  north hemisphere   
 07 10 17  0:58:00 18h18m53s  -16°00'2' Integral  outside FOV >348s: >11.5 m 
 07 10 1312:09:19 18h38m06s  +33°51'3' Swift  daytime   
 07 10 1112:40:13 00h33m36s  +61°04'3' Swift  daytime   
 07 10 10C22:20:22 22h32m13s  +66°10'3' Swift  daytime   
 07 10 10B20:45:47 10h02m07s  +45°44'3' Swift  daytime   
 07 10 10  3:41:12 19h12m24s  -32°23'3' Swift  outside FOV   
 07 10 0821:55:56 10h06m11s  +44°20'3' Swift  daytime   
 07 10 06  6:41:40 22h21m07s  -23°09'2' Swift  below horizon   
 07 10 03  7:40:55 20h07m25s  +10°58'3' Swift  below horizon   
 07 10 0116:31:48 09h59m04s  -59°45'3' Swift  daytime   
 07 09 25 15:52:43 16h52m45s  -22°01'3.12' Integral  daytime   
 07 09 2319:15:23 12h18m30s  -38°16'3' Swift  daytime   
 07 09 20B21:04:32 00h00m35s  -34°49'3' Swift  daytime   
 07 09 20  4:00:13 06h43m44s  +72°14'3' Swift  north hemisphere   
 07 09 17  7:33:56 19h35m42s  +02°25'3' Swift  below horizon   
 07 09 13  0:36:44 15h15m20s  -24°21'3' Swift  outside FOV 1 frame, >110s: >12.35m
20 frames, >110s: >12.6m
 
 07 08 11  5:57:44 01h43m12s  -33°28'3' Swift  outside FOV   
 07 08 2420:50:09 error triangle: 11h28m13  -26°52'
11h24m45  -27°43'
11h29m07  -27°14'
AGILE & IPN  daytime   
 07 08 2112:49:40 error box: 06h21m41  -63°56'
06h23m14  -63°51'
06h20m58  -63°51'
06h22m31  -63°46'
IPN  daytime   
 07 08 10B15:19:17 00h35m46s  +08°50'3' Swift  daytime   
 07 08 1019:54:05 12h39m45s  +10°45'3' Swift  daytime   
 07 08 0919:22:17 13h35m08s  -22°08'3' Swift  daytime   
 07 08 0818:28:00 00h27m04s  +01°10'3' Swift  daytime   
 07 08 0519:55:45 16h20m10s  -59°57'3' Swift  daytime   
 07 08 02  7:07:25 02h27m24s  -55°32'3' Swift  outside FOV 20 frames: <14min: >12.5m 
 07 07 31  9:33:24 21h54m17s  -15°45'3' Swift  clouds   
 07 07 29  0:25:53 03h45m17s  -39°19'3' Swift  daytime   
 07 07 24B10:53:50 01h10m31s  +57°40'20' Agile  daytime   
 07 07 2410:53:50 01h51m16s  -18°37'3' Swift  daytime   
 07 07 21B10:33:48 02h12m31s  -2°12'3' Swift  outside FOV   
 07 07 2110:01:08 00h12m34s  -28°32'3' Swift  outside FOV   
 07 07 14B  4:59:29 03h51m25  +28°18'3' Swift  below horizon   
 07 07 14A  3:20:31 02h51m44  +30°14'3' Swift  below horizon   
 07 07 0716:09:17 17h51m23  -68°55'3' Swift  daytime   
 07 07 0420:07:16 23h38m54  66°15'3' Swift  daytime   
 07 06 2814:41:31 07h41m08  -20°17'3' Swift  daytime   
 07 06 2123:17:57 21h35m13  -24°48'3' Swift  below horizon   
 07 06 1616:30:48 02h08m37  56°57'3' Swift  daytime   
 07 06 15  2:21:23 02h57m12  -04°24'2.97' Integral  below horizon   
 07 06 12B  6:21:35 17h26m51  -08°43'3' Swift  clouds   
 07 06 12  2:40:00 08h05m32  37°16'3' Swift  clouds   
 07 06 11  1:57:51 00h07m57  -29°45'3' Swift  clouds   
 07 05 31  2:11:02 00h26m43  74°18'3' Swift  North hemisphere   
 07 05 2912:49:26 18h55m00  20°38'3' Swift  daytime   
 07 05 21  6:51:26 16h10m41  30°14'3' Swift 1 frame, <12s: >11.9m
20 frames: <233s: >12.2m
1 frame, >12.0m
20 frames, >12.6m
1 frame, >12s: >12.0m
20 frames: >42s: >12.5m
6437
 07 05 1711:21:43 18h30m19  -62°20'3' Swift  daytime   
 07 05 09  2:56:15 15h51m42  -78°41'3' Swift  apparatus off   
 07 05 08  4:31:59 20h51m08  -78°22'3' Swift  outside FOV   
 07 05 06  5:37:14 23h08m52  10°44'3' Swift  clouds   
 07 04 29  3:09:23 21h52m06  -38°51'3' Swift  apparatus off   
 07 04 29  1:36:40 19h50m45  -32°23'3' Swift  apparatus off   
 07 04 27  8:31:24 01h55m27  -27°38'3' Swift  apparatus off   
 07 04 20  6:18:40 08h05m01  -45°34'3' Swift  clouds   
 07 04 19B10:44:26 21h02m52  -31°16'3' Swift  daytime   
 07 04 1910:00:41 12h10m51  +39°55'3' Swift  below horizon   
 07 04 12  1:27:03 12h06m11  +40°08'3' Swift  outside FOV 1 frame, >12min: >12.1m 
 07 04 1120:12:33 7h9m19  +1°04'3' Swift  daytime   
 07 04 06  0:50:40 13h15m49  +16°32'3' Swift  outside FOV 20 frames, >6h: >12m 
 07 04 0215:48:35 20h44m44  +27°24'80'*15' IPN  daytime   
 07 03 3022:51:45 17h58m05  -63°46'3' Swift  daytime   
 07 03 28  3:54:07 04h20m28  -34°04'3' Swift  clouds   
 07 03 18  7:29:08 03h14m10  -42°58'3' Swift  below horizon   
 07 03 11  1:53:09 05h50m17  03°22'3.23' Integral  below horizon   
 07 03 0910:01:21 17h34m45  -37°58'3.23' Integral  daytime   
 07 03 0616:42:31 09h52m20  +10°28'3' Swift  daytime   
 07 02 27  6:07:42 08h02m16  -46°18'3' Swift  outside FOV   
 07 02 2420:29:12 11h55m58  -13°20'3' Swift  daytime   
 07 02 23  1:22:48 10h13m49  43°07'3' Swift  below horizont   
 07 02 2004:44:47 02h19m17  68°49'3' Swift  north hemisphere   
 07 02 19  1:10:46 17h28m40  69°22'3' Swift  north hemisphere   
 07 02 09  3:33:54 03h04m57  -47°22'3' Swift 4 frames, <-50min24s: >13.1outside FOV 1 frame, >8min22s: >12.9
20 frames, >8min22s: >13.5
 
 07 02 08  9:11:09 13h11m41  61°58'3' Swift  daytime   
 07 02 0121:00:44 error box: 01h06m19  -34°43'
00h59m26  -28°45'
01h13m55  -43°08'
01h14m37  -43°03'
IPN  daytime   
 07 02 01  9:11:09 00h44m21  42°18'~0.2o IPN  below horizon   
 07 01 2923:36:25 02h28m03  11°42'3' Swift  daytime   
 07 01 26  2:34:42 02h13m50  -73°31'3' Swift  outside FOV 1 frame, >180s: >13.0m 
 07 01 25  7:20:45     IPN    
 07 01 24  8:41:51 14h45m32  54°34'  IPN  north hemisphere   
 07 01 10  7:23:25 00h03m38  -52°58'3' Swift  clouds   
 07 01 0712:07:06 10h37m38  53°12'3' Swift  daytime   
 07 01 0320:46:54 23h30m14  26°53'3' Swift  daytime   
 06 12 22B  4:12:22 07h01m26  -25°51'3' Swift  below horizon   
 06 12 22  3:29:32 23h52m58  46°32'3' Swift  north hemisphere   
 06 12 18  4:05:05 09h56m53  -35°09'3' Swift  outside FOV   
 06 12 17  3:40:08 10h41m38  -21°08'3' Swift  apparatus off   
 06 12 1412:16:53 00h31m06  -29°38'3' Swift  daytime   
 06 12 1012:20:54 09h38m03  15°36'3' Swift  daytime   
 06 12 02  8:12:42 07h02m34  -74°40'3' Swift 3 frames, <37 min: >13.2moutside FOV 1 frame, >170s: >13.0m,
3 frames, >170s: >13.7m,
5 frames, >170s: >14.0m,
10 frames, >170s: >14.3m
5891
 06 12 0115:58:49 22h07m53  -74°36'3' Swift  daytime   
 06 11 22  7:57:25 20h15m20  15°30'2.68' Integral  below horizon   
 06 11 2115:22:42 9h49m00  -13°11'3' Swift  daytime   
 06 11 10B22:09:01 21h35m36  6°53'3' Swift  daytime   
 06 11 1011:47:56 22h25m13  -2°16'3' Swift  daytime   
 06 11 02  1:01:37 09h53m37  -17°04'3' Swift  below horizon   
 06 10 28  1:28:41 06h28m51  46°16'3' Swift  below horizon   
 06 10 2710:16:20 18h03m15  -82°14'3' Swift  daytime   
 06 10 2518:36:42 20h03m39  -48°15'2.68' Integral  daytime   
 06 10 2115:39:20 09h40m32  -21°56'3' Swift  daytime   
 06 10 1910:08:26 06h06m28  29°34'3' Swift  below horizon   
 06 10 0710:08:26 03h05m16  -50°29'3' Swift  daytime   
 06 10 0616:47:05 07h24m22  -79°12'3' Swift  daytime   
 06 10 0419:50:44 06h30m60  -45°54'3' Swift  daytime   
 06 10 02  1:04:22 14h41m23  +48°44'3' Swift  below horizon   
 06 09 30  9:05:02 20h17m58  -23°38'3.28' Integral  below horizon   
 06 09 2919:56:39 17h32m40  +29°49'  Swift  daytime   
 06 09 28  1:17:00 08h30m29  -42°45'6'' IPN  below horizon   
 06 09 2714:07:47 21h58m13  +05°21'3' Swift  daytime   
 06 09 2616:48:56 17h35m49  +13°02'3' Swift  daytime   
 06 09 23C13:34:42 23h04m30  +3°57'3' Swift  daytime   
 06 09 23B11:38:44 15h52m48  -30°54'3' Swift  daytime   
 06 09 23  5:12:28 16h58m30  +12°23'3' Swift  below horizon   
 06 09 19  7:49:02 18h27m39  -51°02'3' Swift  below horizon   
 06 09 12B17:33:53 18h04m57  -19°53'3.18' Integral  daytime   
 06 09 1213:56:12 00h21m09  20°58'3' Swift  daytime   
 06 09 08  8:57:36 02h07m20  0°22'3' Swift  outside FOV 1 frame, >12min11s: > 11.8m,
20 frames, >12min11s: >12.5m
 
 06 09 06  8:34:06 02h42m60  30°21'3' Swift  clouds   
 06 09 04B  2:31:17 03h52m51  -00°43'3' Swift  below horizon   
 06 09 04A  1:03:39 15h50m58  +44°58'3' Swift  below horizon   
 06 09 0118:44:00 19h08m37  -6°38'4.3'' Integral  daytime   
 06 08 25  3:00:16 01h12m24  +55°48'3' Swift  apparatus off   
 06 08 1423:02:34 14h45m23  +20°34'3' Swift  apparatus off   
 06 08 1322:50:39 7h27m28  -29°51'3' Swift  apparatus off   
 06 08 0714:41:35 16h50m03  +31°36'3' Swift  daytime   
 06 08 0614:23:41 18h08m35  -20°23'3' IPN  daytime   
 06 08 05B14:27:15 18h10m02  +58°09'12' IPN  North hemisphere   
 06 08 05  4:47:49 14h43m41  +12°36'3' Swift  below horizon   
 06 08 04  7:28:20 07h28m48  -27°14'3' Swift  below horizon   
 06 08 0112:16:15 14h12m06  +16°59'3' Swift  daytime   
 06 07 2919:12:29 06h21m21  -62°21'3' Swift  daytime   
 06 07 2822:24:31 01h06m46  -41°23'3' Swift  daytime   
 06 07 19  6:50:36 01h13m49  -48°22'3' Swift  outside FOV 1 frame, >65s: >12.5m,
20 frames, >65s: >12.8m
5346
 06 07 17  9:08:04 11h23m27  28°57'3' Swift  below horizon   
 06 07 1415:12:00 15h11m29  -06°32'3' Swift  daytime   
 06 07 1221:07:43 12h16m15  +35°33'3' Swift  daytime   
 06 07 0812:15:59 00h31m12  +33°43'3' Swift  daytime   
 06 07 0721:30:19 23h48m19  +17°55'3' Swift  daytime   
 06 06 1911:41:03 02h13m27  +30°05'3' Swift  daytime   
 06 06 1412:43:48 21h23m27  -53°02'3' Swift  daytime   
 06 06 07B23:32:44 02h48m08  +14°44'3' Swift  below horizon   
 06 06 07  5:12:13 21h58m51  -22°30'3' Swift  outside FOV 1 frame, >124s: >12.5m,
20 frames, >124s: >13.4m
5241
 06 06 0418:19:00 21h28m55  -10°55'3' Swift  daytime   
 06 06 02B23:54:33 17h49m31  -28°06'3' Swift  daytime   
 06 06 0221:32:12 9h58m18  +0°19'3' Swift  daytime