Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Monthly Sunspot Classification and Coordinates

‹›

July 2012 Monthly report →

Each group: class – number of spots (B, ΔL). NS: No sunspot.

DrawingDayRClassification and Coordinates
01 156 HK_ – 18 (15, 14E), BXI – 10 (15, 27E), BXI – 17 (20, 37E), CSI – 5 (-15, 31W), BXI – 5 (-15, 12E), EKC – 41 (-15, 28E)
02 170 CSI – 17 (15, 01E), BXI – 5 (14, 14E), DSI – 14 (19, 24E), CSI – 3 (-16, 41W), AX_ – 2 (-15, 02W), BXI – 4 (-15, 02E), EKC – 55 (-16, 13E)
03 135 DAC – 15 (16, 13W), DAC – 10 (21, 09E), HS_ – 1 (-15, 63W), BXI – 5 (-15, 15W), FSC – 54 (-15, 01W)
04 110 CKI – 11 (16, 27W), CSO – 10 (21, 03W), AX_ – 1 (10, 71E), HS_ – 1 (-15, 75W), EHC – 37 (-16, 14W)
05 202 CHO – 5 (16, 38W), AX_ – 2 (21, 27W), HS_ – 9 (19, 17W), AX_ – 2 (15, 11E), CSO – 40 (9, 64E), FKC – 62 (-15, 27W), HS_ – 1 (-16, 70E), AX_ – 1 (-25, 71E)
06 146 HH_ – 1 (16, 54W), AX_ – 3 (19, 30W), AX_ – 1 (23, 25W), BXI – 3 (10, 49E), FKC – 43 (-15, 41W), HS_ – 1 (-15, 56E), AX_ – 1 (-15, 70E), ?__ – 2 (-18, 78E), ?__ – 1 (-12, 80E)
07 150 HS_ – 1 (16, 68W), AX_ – 3 (20, 43W), HR_ – 2 (10, 32E), FKC – 25 (-16, 55W), AX_ – 1 (-21, 23W), HS_ – 1 (-15, 44E), BXO – 2 (-16, 60E), AX_ – 1 (-24, 66E), HS_ – 1 (-12, 69E), EKC – 13 (-18, 72E)
08 115 AX_ – 2 (10, 17E), AX_ – 1 (10, 24E), FAC – 16 (-16, 68W), HS_ – 2 (-15, 31E), BXO – 4 (-15, 47E), HA_ – 2 (-11, 56E), EKC – 18 (-16, 59E)
09 130 AX_ – 3 (10, 13E), BXI – 3 (-17, 77W), HA_ – 2 (-16, 20E), BXO – 2 (-16, 25E), AX_ – 1 (-13, 31E), BXI – 6 (-20, 31E), DAI – 12 (-16, 38E), HA_ – 1 (-12, 43E), EKC – 10 (-16, 47E)
10 159 HA_ – 2 (-15, 06E), AX_ – 1 (-16, 09E), AX_ – 1 (-12, 13E), DAC – 22 (-21, 16E), DKI – 19 (-14, 22E), HA_ – 2 (-11, 27E), FKC – 42 (-16, 31E)
11 156 HA_ – 1 (-15, 07W), AX_ – 2 (-15, 02E), CAI – 21 (-21, 04E), DAI – 22 (-16, 10E), CAO – 8 (-12, 16E), EKC – 42 (-16, 21E)
12 178 AX_ – 5 (14, 10W), HA_ – 1 (-15, 21W), AX_ – 2 (-13, 12W), CAI – 24 (-21, 10W), DAI – 25 (-16, 05W), HA_ – 1 (-11, 02E), EKC – 36 (-16, 07E), BXI – 4 (-28, 41E)
13 198 CRI – 10 (13, 24W), HA_ – 1 (-16, 34W), DAI – 22 (-21, 24W), DAI – 22 (-16, 16W), HA_ – 5 (-12, 10W), EKC – 60 (-16, 07W), BXO – 8 (-28, 28E)
14 143 BXI – 6 (12, 42W), HA_ – 1 (-16, 49W), EKC – 13 (-21, 38W), AX_ – 5 (-15, 35W), AX_ – 2 (-12, 24W), EKC – 38 (-15, 22W), BXI – 8 (-28, 12E)
15 214 CAI – 6 (12, 55W), HA_ – 2 (-16, 63W), BXI – 9 (-17, 57W), AX_ – 1 (-14, 53W), DAI – 20 (-21, 52W), AX_ – 2 (-16, 49W), BXI – 5 (-12, 39W), FKC – 68 (-16, 37W), BXI – 11 (-28, 02W)
16 177 CAO – 9 (13, 67W), ?__ – 1 (-16, 75W), CAI – 4 (-16, 69W), DAI – 12 (-21, 65W), AX_ – 3 (-15, 58W), AX_ – 2 (-11, 52W), EKC – 42 (-15, 48W), CAI – 12 (-28, 14W), HA_ – 2 (-15, 72E)
17 136 BXO – 4 (12, 75W), HA_ – 2 (-16, 73W), ?__ – 4 (-21, 73W), EKI – 25 (-16, 60W), CAO – 11 (-28, 27W), HA_ – 2 (-15, 60E), HA_ – 4 (-20, 63E), BXI – 4 (-17, 63E)
18 79 ?__ – 7 (-16, 73W), CSI – 7 (-27, 40W), AX_ – 2 (-15, 46E), HH_ – 9 (-20, 48E), AX_ – 4 (-17, 49E)
19 48 BXI – 4 (-28, 52W), AX_ – 1 (-15, 33E), HA_ – 2 (-20, 35E), AX_ – 1 (-17, 35E)
20 52 BXO – 3 (-29, 66W), CSI – 3 (-21, 21E), BXO – 3 (-17, 24E), AX_ – 3 (-18, 73E)
21 53 HA_ – 2 (-21, 05E), AX_ – 4 (-19, 08E), AX_ – 3 (-17, 10E), BXO – 4 (-18, 60E)
22 70 AX_ – 2 (18, 61W), HA_ – 6 (-22, 07W), AX_ – 4 (-20, 06W), AX_ – 5 (-18, 02W), BXO – 3 (-19, 51E)
23 100 AX_ – 1 (26, 76E), HA_ – 2 (16, 77E), HA_ – 4 (-21, 20W), AX_ – 4 (-18, 16W), AX_ – 1 (-16, 15W), AX_ – 2 (-6, 13W), BXI – 5 (-18, 37E), ?__ – 1 (-12, 81E)
24 85 HS_ – 2 (17, 65E), AX_ – 1 (26, 65E), AX_ – 3 (-22, 33W), BXI – 4 (-17, 19E), HS_ – 2 (-11, 67E), HS_ – 2 (-20, 80E), ?__ – 1 (-18, 81E)
25 121 AX_ – 4 (14, 34W), AX_ – 3 (21, 26E), AX_ – 2 (26, 49E), CSI – 5 (17, 50E), AX_ – 2 (-21, 49W), BXI – 10 (-17, 10E), HA_ – 2 (-11, 52E), HS_ – 1 (-19, 62E), AX_ – 2 (-18, 65E)
26 88 HS_ – 4 (16, 47W), HA_ – 4 (18, 35E), CSO – 2 (-16, 03W), HS_ – 2 (-11, 40E), HS_ – 1 (-19, 49E), AX_ – 2 (-19, 53E), ?__ – 3 (-20, 77E)
27 156 BXI – 6 (15, 60W), CAO – 5 (18, 21E), AX_ – 2 (17, 26E), BXI – 3 (-17, 16W), AX_ – 2 (-1, 08E), HS_ – 1 (-11, 27E), BXI – 3 (-29, 27E), HK_ – 1 (-19, 36E), AX_ – 1 (-20, 40E), CAI – 8 (-19, 63E), ?__ – 2 (-21, 72E), ?__ – 2 (-24, 74E)
28 154 BXO – 5 (15, 73W), HA_ – 5 (17, 07E), BXO – 3 (18, 63E), HS_ – 1 (-11, 14E), CRO – 8 (-28, 15E), AX_ – 1 (-18, 19E), HH_ – 4 (-20, 23E), AX_ – 1 (-20, 27E), DAI – 18 (-19, 52E), CSI – 8 (-23, 63E)
29 121 HS_ – 1 (19, 03W), AX_ – 2 (19, 03E), ?__ – 1 (17, 84E), HS_ – 2 (-9, 03E), BXO – 6 (-27, 04E), HA_ – 5 (-18, 12E), HH_ – 14 (-21, 39E), DAI – 10 (-23, 50E)
30 215 HA_ – 3 (17, 19W), AX_ – 1 (18, 13W), EAI – 12 (18, 74E), HS_ – 7 (-10, 11W), BXO – 4 (-28, 10W), AX_ – 5 (-17, 10W), AX_ – 2 (-20, 06W), HH_ – 1 (-19, 03W), BXO – 11 (-19, 07E), HK_ – 36 (-19, 25E), DSI – 23 (-22, 37E)
31 198 HA_ – 2 (16, 32W), EAI – 11 (18, 61E), HS_ – 2 (-11, 25W), AX_ – 5 (-17, 23W), BXO – 4 (-29, 23W), AX_ – 1 (-20, 19W), HH_ – 2 (-19, 16W), AX_ – 1 (-21, 12W), AX_ – 4 (-21, 04W), HK_ – 24 (-19, 11E), DAI – 19 (-22, 24E), ?__ – 3 (-23, 77E)