Images 21.09.2026 · Istanbul University Observatory Solar Observations

Solar Images Monday, 21 September 2026

‹ 20.09.2026 2026 24.09.2026 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 08:23 UT
Observer: Melike ERYILMAZ
g: 4
f: 19
R: 59
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DKI – 7

Group 2 · CSI – 10

Group 3 · HH_ – 1

Group 4 · HH_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=21.09.2026
Saat=08:23
Gözlemci=Melike ERYILMAZ
KontrolEden=Tuğba BOZTEPE
Durumaçısı=24.98
Enlemaçısı=7.08
Boylamaçısı=61.76
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=20572
AyRasatNo=17
RasatÖnceki=20.09.2026
RasatSonraki=24.09.2026

[Leke Grupları]
Grupsayısı=4:3:1
LekeSayısı=19:18:1
RölatifSayı=59:48:11
01=DKI 07 +10.492 +12.541 074.301 +0.000 0000 0 +12.185 +16.152 +08.799 +08.930 +10.492 +15.952 +10.492 +09.130
02=CSI 10 +03.153 -10.508 051.252 +0.000 0000 0 +04.272 -07.927 +02.340 -13.900 +03.153 -08.127 +03.153 -12.890
03=HH_ 01 +13.784 -67.421 354.339 +0.000 0000 0 +14.469 -65.909 +13.990 -68.932 +13.784 -66.410 +13.784 -68.432
04=HH_ 01 -11.869 -58.775 002.985 +0.000 0000 0 -10.827 -57.203 -12.910 -60.346 -11.869 -57.704 -11.869 -59.847

20260921.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.