Images 12.06.2025 · Istanbul University Observatory Solar Observations

Solar Images Thursday, 12 June 2025

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3231 px)

Time: 11:15 UT
Observer: Ergün EGE
g: 9
f: 42
R: 132
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CRI – 7

Group 2 · HS_ – 1

Group 3 · HR_ – 1

Group 4 · DAO – 6

Group 5 · DSO – 2

Group 6 · HK_ – 8

Group 7 · DAI – 15

Group 8 · AX_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=12.06.2025
Saat=11:15
Gözlemci=Ergün EGE
KontrolEden=Süleyman FİŞEK
Durumaçısı=-10.78
Enlemaçısı=0.71
Boylamaçısı=93.23
Boylamfark=0
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.7
Sırano=20268
AyRasatNo=11
RasatÖnceki=11.06.2025
RasatSonraki=13.06.2025

[Leke Grupları]
Grupsayısı=9:5:4
LekeSayısı=42:17:25
RölatifSayı=132:67:65
01=CRI 07 +05.570 +21.366 114.596 +0.000 0000 0 +05.966 +24.714 +04.149 +18.190 +05.570 +24.514 +05.570 +18.219
02=HS_ 01 +13.283 -34.321 058.909 -1.000 0000 0 +14.240 -33.160 +12.325 -35.482
03=HR_ 01 +09.316 -53.489 039.741 -1.000 0000 0 +09.818 -52.962 +08.813 -54.150
04=DAO 06 +16.238 -57.148 036.820 +0.000 0000 0 +17.583 -54.718 +14.893 -59.577 +16.238 -54.918 +16.238 -59.377
05=DSO 02 +19.184 -72.494 020.736 +0.000 0000 0 +20.926 -67.395 +17.442 -77.593 +19.184 -67.595 +19.184 -77.393
06=HK_ 08 -14.674 +56.960 150.190 -1.000 0000 0 -13.298 +59.360 -16.490 +54.884
07=DAI 15 -15.613 +35.763 128.993 +0.000 0000 0 -12.718 +41.372 -18.508 +30.154 -15.613 +41.172 -15.613 +30.354
08=AX_ 01 -14.938 +27.194 120.424 -1.000 0000 0 -14.938 +27.194 -14.938 +27.194
09=AX_ 01 -08.352 -16.669 076.561 +0.000 0000 0 -07.899 -16.181 -08.805 -17.156 -08.352 -16.682 -08.352 -16.656

20250612.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 →

2025/20250612_ee · EE · 10 frames · 214.3 MB · 11:29:14–11:41:05 UT

11:29:14 UT · 30 ms