Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 8 August 2025

‹ 06.08.2025 2025 09.08.2025 ›

Photosphere sunspot drawing and RDS evaluation

08.08.2025 photosphere drawing

High-resolution scan (3229 px)

Time
09:50 UT
Observer
Ergün EGE
g
12
f
73
R
193
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EKC – 25Group 1 · EKC – 25 Group 2 · DSO – 3Group 2 · DSO – 3 Group 3 · BXO – 6Group 3 · BXO – 6 Group 4 · CSO – 5Group 4 · CSO – 5 Group 5 · ESC – 17Group 5 · ESC – 17 Group 6 · HS_ – 1Group 6 · HS_ – 1 Group 7 · BXO – 5Group 7 · BXO – 5 Group 8 · HR_ – 1Group 8 · HR_ – 1 Group 9 · HR_ – 2Group 9 · HR_ – 2 Group 10 · DSC – 4Group 10 · DSC – 4 Group 11 · BXO – 3Group 11 · BXO – 3 Group 12 · AX_ – 1Group 12 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=8.08.2025
Saat=09:50
Gözlemci=Ergün EGE
KontrolEden=Ergün EGE
Durumaçısı=13.72
Enlemaçısı=6.28
Boylamaçısı=59.54
Boylamfark=1
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.2
Sırano=20317
AyRasatNo=5
RasatÖnceki=06.08.2025
RasatSonraki=09.08.2025

[Leke Grupları]
Grupsayısı=12:9:3
LekeSayısı=73:65:8
RölatifSayı=193:155:38
01=EKC 25 +05.504 +40.641 100.181 +0.000 0000 0 +07.730 +46.911 +03.278 +34.370 +05.504 +46.711 +05.504 +34.570
02=DSO 03 +12.233 +38.320 097.860 +0.000 0000 0 +13.928 +40.189 +10.539 +36.450 +12.233 +39.989 +12.233 +36.650
03=BXO 06 +09.633 -04.391 055.149 +0.000 0000 0 +11.230 -02.370 +08.242 -06.412 +09.633 -02.570 +09.633 -06.212
04=CSO 05 +21.355 -28.381 031.159 +0.000 0000 0 +23.351 -26.154 +19.359 -30.608 +21.355 -26.354 +21.355 -30.408
05=ESC 17 +08.391 -33.690 026.471 +0.000 0000 0 +10.620 -26.602 +06.163 -39.536 +08.391 -26.802 +08.391 -39.336
06=HS_ 01 +18.648 -47.164 012.376 +0.000 0000 0 +19.449 -46.174 +17.847 -48.154 +18.648 -46.674 +18.648 -47.654
07=BXO 05 +24.408 -52.711 006.829 +0.000 0000 0 +25.316 -50.887 +23.500 -54.535 +24.408 -51.870 +24.408 -54.335
08=HR_ 01 +11.539 -69.440 350.496 +0.000 0000 0 +12.790 -68.150 +10.999 -70.730 +11.539 -68.650 +11.539 -70.230
09=HR_ 02 +04.611 -69.923 349.617 +0.000 0000 0 +05.170 -68.533 +04.520 -71.313 +04.611 -69.330 +04.611 -70.813
10=DSC 04 -14.576 +71.760 131.300 +0.000 0000 0 -11.784 +76.182 -17.368 +67.339 -14.576 +75.982 -14.576 +67.539
11=BXO 03 -17.800 +46.221 105.761 +0.000 0000 0 -16.330 +48.743 -17.686 +43.700 -17.800 +48.243 -17.800 +44.200
12=AX_ 01 -06.463 +22.470 082.100 +0.000 0000 0 -05.939 +22.778 -06.987 +22.162 -06.463 +22.278 -06.463 +22.662
20250808.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.