Images 15.07.2025 · Istanbul University Observatory Solar Observations

Solar Images Tuesday, 15 July 2025

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 10:35 UT
Observer: Ergün EGE
g: 12
f: 67
R: 187
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · FSI – 6

Group 2 · DKI – 15

Group 3 · HS_ – 1

Group 4 · HK_ – 5

Group 5 · CRI – 12

Group 6 · DSI – 11

Group 7 · AX_ – 1

Group 8 · HS_ – 1

Group 9 · AX_ – 2

Group 10 · CRO – 10

Group 11 · BXO – 2

Group 12 · HR_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=15.07.2025
Saat=10:35
Gözlemci=Ergün EGE
KontrolEden=
Durumaçısı=3.9
Enlemaçısı=4.36
Boylamaçısı=16.82
Boylamfark=1
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=0.0
Sırano=20299
AyRasatNo=13
RasatÖnceki=13.07.2025
RasatSonraki=16.07.2025

[Leke Grupları]
Grupsayısı=12:7:5
LekeSayısı=67:51:16
RölatifSayı=187:121:66
01=FSI 06 +28.359 +55.683 072.503 +0.000 0000 0 +30.136 +63.843 +26.583 +47.523 +28.359 +63.643 +28.359 +47.723
02=DKI 15 +21.390 +19.630 036.450 +0.000 0000 0 +23.303 +23.771 +19.478 +15.489 +21.390 +23.571 +21.390 +15.689
03=HS_ 01 +18.299 +10.691 027.511 -1.000 0000 0 +18.741 +11.188 +17.856 +10.195
04=HK_ 05 +19.860 +01.948 018.768 -1.000 0000 0 +21.542 +04.754 +18.178 -00.857
05=CRI 12 +23.313 -09.806 007.140 +0.000 0000 0 +24.862 -06.593 +21.765 -13.200 +23.313 -06.793 +23.313 -12.820
06=DSI 11 +01.173 -41.654 335.166 +0.000 0000 0 +02.221 -36.993 +00.126 -46.315 +01.173 -37.193 +01.173 -46.115
07=AX_ 01 +05.642 -73.164 303.656 -1.000 0000 0 +05.973 -72.399 +05.310 -73.929
08=HS_ 01 -07.899 +29.820 046.640 -1.000 0000 0 -07.570 +30.906 -08.740 +28.734
09=AX_ 02 -07.628 -20.705 356.115 -1.000 0000 0 -07.261 -19.343 -07.994 -22.670
10=CRO 10 -15.684 -26.775 350.450 +0.000 0000 0 -13.685 -22.282 -17.683 -31.268 -15.684 -22.482 -15.684 -31.680
11=BXO 02 -24.866 -28.321 348.499 -1.000 0000 0 -24.432 -26.799 -25.300 -29.844
12=HR_ 01 -14.642 -68.236 308.584 -1.000 0000 0 -14.400 -67.258 -15.244 -69.214

20250715.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 →

2025/20250715 · · 10 frames · 214.3 MB · 10:36:52–10:55:24 UT

10:36:52 UT · 30 ms