Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 9 January 2025

‹ 08.01.2025 2025 10.01.2025 ›

Photosphere sunspot drawing and RDS evaluation

09.01.2025 photosphere drawing

High-resolution scan (3230 px)

Time
08:20 UT
Observer
Korhan YELKENCİ
g
11
f
87
R
197
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · BXI – 8Group 2 · BXI – 8 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · BXI – 13Group 4 · BXI – 13 Group 5 · EAC – 46Group 5 · EAC – 46 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · AX_ – 2Group 7 · AX_ – 2 Group 8 · AX_ – 2Group 8 · AX_ – 2 Group 9 · AX_ – 2Group 9 · AX_ – 2 Group 10 · BXO – 6Group 10 · BXO – 6 Group 11 · CAO – 4Group 11 · CAO – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=9.01.2025
Saat=08:20
Gözlemci=Korhan YELKENCİ
KontrolEden=Ergün EGE
Durumaçısı=-2.09
Enlemaçısı=-3.96
Boylamaçısı=326.77
Boylamfark=2
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.5
Sırano=20172
AyRasatNo=8
RasatÖnceki=08.01.2025
RasatSonraki=10.01.2025

[Leke Grupları]
Grupsayısı=11:6:5
LekeSayısı=87:71:16
RölatifSayı=197:131:66
01=AX_ 01 +18.115 +57.364 024.134 -1.000 0000 0 +18.115 +57.364 +18.115 +57.364
02=BXI 08 +23.310 +46.154 012.924 20.471 0000 0 +24.302 +48.479 +22.317 +43.830 +24.102 +48.279 +22.517 +44.300
03=AX_ 02 +13.459 +42.280 009.500 +0.000 0000 0 +13.829 +42.546 +13.890 +42.140 +13.459 +41.983 +13.459 +42.577
04=BXI 13 +19.692 +21.360 347.806 37.433 0000 0 +21.749 +23.669 +17.634 +18.403 +21.549 +23.469 +17.834 +18.603
05=EAC 46 +10.355 +11.652 338.422 22.132 0000 0 +13.390 +18.652 +07.320 +04.652 +12.918 +18.285 +07.520 +04.852
06=AX_ 01 +05.200 -48.975 277.795 -1.000 0000 0 +05.200 -48.975 +05.200 -48.975
07=AX_ 02 -11.250 +61.874 028.644 +0.000 0000 0 -10.659 +62.486 -11.391 +61.262 -11.250 +61.986 -11.250 +61.762
08=AX_ 02 -16.125 +48.754 015.524 +0.000 0000 0 -15.620 +49.233 -16.630 +48.275 -16.125 +48.733 -16.125 +48.775
09=AX_ 02 -09.697 +38.600 005.370 +0.000 0000 0 -08.958 +39.312 -10.436 +37.888 -09.697 +38.812 -09.697 +38.388
10=BXO 06 -14.858 +30.345 357.115 +0.000 0000 0 -14.320 +31.980 -15.396 +28.711 -14.858 +31.479 -14.858 +29.210
11=CAO 04 -18.626 -06.530 320.240 +0.000 0000 0 -17.898 -05.720 -19.354 -07.987 -18.626 -05.897 -18.626 -07.164
20250109.gzd

Chromosphere (H-α) FITS frames

No chromosphere observation for this day.

Coronado H-α animations from frame sequences

No Coronado observation for this day.