Images 13.04.2026 · Istanbul University Observatory Solar Observations

Solar Images Monday, 13 April 2026

‹ 12.04.2026 2026 14.04.2026 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 08:18 UT
Observer: Tuğba BOZTEPE
g: 4
f: 23
R: 63
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DHI – 15

Group 2 · AX_ – 1

Group 3 · AH_ – 3

Group 4 · AX_ – 4

RDS data file (.gzd)

[Gözlem]
Tarih=13.04.2026
Saat=08:18
Gözlemci=Tuğba BOZTEPE
KontrolEden=Tuğba BOZTEPE
Durumaçısı=-26.1
Enlemaçısı=-5.76
Boylamaçısı=30.66
Boylamfark=2
GKalite=3
GDurum=
Kuzeyaçısı=-0.5
Sırano=20448
AyRasatNo=9
RasatÖnceki=12.04.2026
RasatSonraki=14.04.2026

[Leke Grupları]
Grupsayısı=4:2:2
LekeSayısı=23:16:7
RölatifSayı=63:36:27
01=DHI 15 +18.954 +14.290 044.689 +0.000 0000 0 +20.410 +17.828 +17.498 +10.231 +18.954 +17.628 +18.954 +10.431
02=AX_ 01 +10.906 -77.555 313.105 +0.000 0000 0 +11.575 -76.456 +10.237 -78.654 +10.906 -76.956 +10.906 -78.154
03=AH_ 03 -18.255 -15.392 015.268 +0.000 0000 0 -16.965 -18.843 -19.544 -11.941 -18.255 -12.141 -18.255 -18.643
04=AX_ 04 -11.120 -16.469 014.191 +0.000 0000 0 -10.720 -15.510 -12.169 -17.887 -11.120 -15.360 -11.120 -17.687

20260413.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.