Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Monthly Sunspot Classification and Coordinates

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July 2016 Monthly report →

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

DrawingDayRClassification and Coordinates
01 0 NS
02 11 AX_ – 1 (5, 15W)
03 0 NS
04 0 NS
05 23 AX_ – 2 (11, 12W), AX_ – 1 (-8, 67E)
06 23 AX_ – 2 (-16, 24W), AX_ – 1 (-8, 50E)
07 30 BXI – 8 (-17, 35W), ?__ – 2 (-4, 83E)
08 24 AX_ – 2 (-4, 68E), AX_ – 2 (-7, 70E)
09 87 AX_ – 5 (21, 53E), CSI – 12 (10, 75E), AX_ – 2 (-17, 62W), AX_ – 2 (-17, 56W), CSI – 16 (-6, 58E)
10 50 AX_ – 2 (21, 46E), BXI – 11 (10, 63E), CSI – 7 (-6, 43E)
11 74 CAI – 11 (20, 29E), DAC – 12 (9, 49E), HS_ – 1 (6, 81E), CRI – 10 (-5, 30E)
12 82 DRI – 6 (19, 15E), CAI – 14 (9, 36E), HS_ – 2 (5, 72E), AX_ – 1 (-6, 24W), CAI – 9 (-6, 18E)
13 57 CRO – 2 (21, 01E), CAI – 8 (10, 20E), HH_ – 3 (6, 55E), HA_ – 4 (-5, 03E)
14 100 BXI – 11 (21, 10W), BXI – 28 (10, 05E), CSI – 5 (5, 41E), BXI – 16 (-7, 12W)
15 116 AX_ – 3 (21, 19W), AX_ – 1 (9, 04W), AX_ – 2 (12, 03E), BXI – 4 (11, 28E), AX_ – 1 (18, 29E), ESC – 18 (5, 35E), BXI – 5 (-7, 22W), BXO – 2 (-15, 50E)
17 43 CSO – 7 (6, 03E), DSI – 16 (5, 12E)
18 67 CHO – 7 (4, 11W), DHI – 18 (5, 01W), CAI – 12 (16, 40E)
19 81 CHI – 14 (4, 24W), DHC – 30 (5, 14W), CAO – 7 (16, 25E)
20 78 CHO – 12 (4, 39W), DKI – 30 (5, 29W), CRI – 6 (15, 09E)
21 59 HS_ – 6 (3, 51W), DKC – 20 (4, 42W), AX_ – 3 (17, 04W)
22 58 HK_ – 5 (4, 64W), DAI – 21 (5, 55W), CRO – 2 (18, 14W)
23 42 HK_ – 5 (3, 79W), EKC – 17 (5, 70W)
24 14 DAO – 4 (6, 82W)
25 0 NS
26 0 NS
27 0 NS
28 11 AX_ – 1 (11, 72E)
29 39 AX_ – 5 (16, 04E), AX_ – 2 (11, 60E), AX_ – 2 (-15, 33E)
30 27 AX_ – 4 (17, 09W), BXO – 3 (11, 49E)
31 25 AX_ – 3 (7, 33W), AX_ – 2 (10, 35E)