Images 12.04.2026 · Istanbul University Observatory Solar Observations

Solar Images Sunday, 12 April 2026

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3227 px)

Time: 10:20 UT
Observer: Burçin TANIK
g: 2
f: 15
R: 35
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DKO – 14

Group 2 · HS_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=12.04.2026
Saat=10:20
Gözlemci=Burçin TANIK
KontrolEden=Tuğba BOZTEPE
Durumaçısı=-26.14
Enlemaçısı=-5.83
Boylamaçısı=42.75
Boylamfark=1
GKalite=3
GDurum=G.T , B.A
Kuzeyaçısı=-0.5
Sırano=20447
AyRasatNo=8
RasatÖnceki=11.04.2026
RasatSonraki=13.04.2026

[Leke Grupları]
Grupsayısı=2:1:1
LekeSayısı=15:14:1
RölatifSayı=35:24:11
01=DKO 14 +18.631 +02.304 045.540 19.195 0000 0 +20.190 +05.428 +17.720 -00.819 +18.996 +03.955 +17.723 +00.296
02=HS_ 01 -18.837 -28.766 013.984 +0.000 0000 0 -17.824 -28.920 -19.850 -29.440 -18.837 -29.600 -18.837 -28.526

20260412.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.