Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Monthly Sunspot Classification and Coordinates

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November 2023 Monthly report →

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

DrawingDayRClassification and Coordinates
01 113 BXI – 10 (22, 30.6W), AX_ – 1 (11, 10.7W), BXI – 8 (17, 05.2E), DAI – 26 (-17, 18.6W), BXI – 5 (-14, 05.3E), ?__ – 3 (-14, 77.5E)
03 135 BXO – 2 (21, 57.3W), AX_ – 1 (24, 53.8W), AX_ – 1 (13, 53.1E), AX_ – 1 (20, 73.1E), HS_ – 5 (-18, 49.5W), HS_ – 13 (-18, 42.5W), AX_ – 2 (-20, 00.1W), ESI – 13 (-15, 54.5E), HS_ – 7 (-8, 79.1E)
04 66 AX_ – 1 (23, 67.4W), HH_ – 3 (-18, 64.1W), AX_ – 3 (-18, 55.3W), CHI – 3 (-14, 35.6E), DSC – 6 (-9, 62.9E)
05 93 AX_ – 1 (22, 77.3W), BXI – 8 (21, 17.6W), AX_ – 1 (12, 27.7E), EAI – 5 (-20, 75.3W), EAI – 10 (-14, 28.1E), CAI – 8 (-9, 50.9E)
06 66 AX_ – 1 (21, 33.5W), AX_ – 2 (12, 13.1E), AX_ – 1 (3, 65.5E), CKO – 6 (-14, 10.3E), CSO – 6 (-9, 37.7E)
07 100 AX_ – 2 (23, 46.2W), BXI – 3 (11, 12.7E), AX_ – 1 (23, 21.8E), AX_ – 1 (4, 51.8E), DAI – 20 (-15, 00.2W), DAI – 13 (-8, 20.8E)
08 89 BXI – 6 (23, 60.8W), BXI – 11 (11, 01.5W), AX_ – 1 (5, 37.9E), HA_ – 2 (-13, 17.4W), BXI – 4 (-17, 08.2W), CAI – 5 (-7, 07E)
09 116 AX_ – 3 (6, 72.4W), CSO – 14 (10, 16.9W), BXI – 5 (25, 14.5W), AX_ – 1 (4, 23.6E), DHI – 14 (-13, 31.5W), AX_ – 3 (-14, 12W), AX_ – 6 (-8, 08.4W)
10 97 DSC – 17 (10, 29.3W), AX_ – 1 (25, 28.7W), HK_ – 6 (-14, 43.8W), CSI – 7 (-13, 26.4W), HS_ – 3 (-8, 18.3W), AX_ – 3 (-18, 15.6W)
11 53 CSI – 13 (9, 42.6W), CSI – 6 (-15, 49.4W), BXO – 4 (-19, 29.2W)
12 73 DAO – 7 (8, 56.4W), HA_ – 2 (-15, 71.2W), BXO – 4 (-15, 55.3W), BXI – 4 (-18, 42.4W), BXI – 6 (-9, 02.3E)
14 101 CHO – 2 (9, 82.8W), CRI – 3 (-14, 81.6W), CAO – 4 (-18, 70.1W), BXI – 8 (-20, 64.6W), BXI – 8 (-16, 39W), DAI – 16 (-10, 23.8W)
16 35 AX_ – 1 (30, 59.9E), BXO – 2 (-17, 64.2W), DAI – 2 (-9, 51.4W)
21 163 BXO – 3 (7, 31.7E), HR_ – 1 (18, 44.8E), CAO – 5 (24, 51.3E), HA_ – 1 (11, 54.1E), HA_ – 8 (21, 57.4E), CAI – 6 (19, 64.7E), BXI – 11 (-9, 16.8W), DAC – 15 (-14, 28.3E), AX_ – 1 (-18, 40.4E), HA_ – 1 (-12, 69.5E), HA_ – 1 (-17, 73.9E)
22 88 FAC – 24 (19, 41.5E), CAI – 7 (-10, 30.5W), CAI – 14 (-14, 13.1E), CAI – 3 (-14, 55.9E)
27 132 BXO – 2 (12, 71.8W), AX_ – 3 (22, 29.9W), DSI – 11 (16, 18.3W), BXO – 2 (21, 43.9E), CAI – 7 (-17, 39.3W), HS_ – 2 (-13, 10.7W), HS_ – 1 (-17, 05.7W), DSC – 13 (-18, 20.7E), HS_ – 1 (-9, 27.9E)
28 175 CAI – 6 (21, 38.7W), AX_ – 1 (44, 37W), CAI – 16 (15, 27.9W), AX_ – 1 (24, 23.4W), AX_ – 3 (20, 29.8E), AX_ – 1 (-14, 66.1W), CAI – 7 (-18, 52.2W), DAI – 8 (-14, 20.9W), DAI – 20 (-18, 08.1E), HS_ – 1 (-9, 15.6E), HS_ – 1 (-16, 75.7E)