Images 11.05.2025 · Istanbul University Observatory Solar Observations

Solar Images Sunday, 11 May 2025

‹ 09.05.2025 2025 12.05.2025 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 09:05 UT
Observer: Ergün EGE
g: 4
f: 12
R: 52
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1

Group 2 · BXO – 8

Group 3 · HS_ – 1

Group 4 · HA_ – 2

RDS data file (.gzd)

[Gözlem]
Tarih=11.05.2025
Saat=09:05
Gözlemci=Ergün EGE
KontrolEden=Süleyman FİŞEK
Durumaçısı=-21.85
Enlemaçısı=-3.08
Boylamaçısı=157.82
Boylamfark=2
GKalite=3
GDurum=
Kuzeyaçısı=-0.3
Sırano=20241
AyRasatNo=7
RasatÖnceki=09.05.2025
RasatSonraki=12.05.2025

[Leke Grupları]
Grupsayısı=4:2:2
LekeSayısı=12:9:3
RölatifSayı=52:29:23
01=AX_ 01 +06.990 +46.471 204.291 +0.000 0000 0 +07.303 +46.888 +06.677 +46.550 +06.990 +46.140 +06.990 +46.802
02=BXO 08 +02.780 -19.828 137.992 +0.000 0000 0 +03.117 -17.173 +01.380 -22.484 +02.780 -17.373 +02.780 -22.284
03=HS_ 01 -09.312 +27.175 184.995 +0.000 0000 0 -08.485 +27.948 -10.140 +26.402 -09.312 +27.448 -09.312 +26.902
04=HA_ 02 -20.117 -29.840 127.980 +0.000 0000 0 -19.451 -29.254 -20.783 -30.426 -20.117 -29.754 -20.117 -29.926

20250511.gzd

Chromosphere (H-α) FITS frames

The images are made automatically with a fixed, gentle rule: uneven illumination and most of the limb darkening are removed, and the brightness is shown on a linear scale (no sharpening); prominences get their own scale outside the limb. Frames are ordered by sharpness (seeing); frames without the Sun (darks, bias) come last. Method →

2025/20250511_ee · EE · 8 frames · 171.4 MB · 09:07:55–09:17:05 UT

Coronado H-α animations from frame sequences

No Coronado observation for this day.