Images 03.07.2026 · Istanbul University Observatory Solar Observations

Solar Images Friday, 3 July 2026

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3228 px)

Time: 10:45 UT
Observer: Emre YILMAN
g: 4
f: 50
R: 90
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · FKC – 15

Group 2 · AX_ – 1

Group 3 · CKI – 7

Group 4 · FKC – 27

RDS data file (.gzd)

[Gözlem]
Tarih=3.07.2026
Saat=10:45
Gözlemci=Emre YILMAN
KontrolEden=Korhan YELKENCİ
Durumaçısı=-1.6
Enlemaçısı=3.1
Boylamaçısı=37.99
Boylamfark=1
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.3
Sırano=20503
AyRasatNo=3
RasatÖnceki=02.07.2026
RasatSonraki=05.07.2026

[Leke Grupları]
Grupsayısı=4:2:2
LekeSayısı=50:16:34
RölatifSayı=90:36:54
01=FKC 15 +15.840 +55.297 093.287 +0.000 0000 0 +18.786 +64.950 +11.383 +46.499 +15.840 +63.895 +15.840 +46.699
02=AX_ 01 +15.638 -69.730 328.260 -1.000 0000 0 +15.638 -69.730 +15.638 -69.730
03=CKI 07 -18.745 +60.120 098.200 +0.000 0000 0 -15.830 +67.354 -22.407 +52.670 -18.745 +67.154 -18.745 +52.870
04=FKC 27 -06.432 +35.586 073.576 +0.000 0000 0 -02.219 +44.445 -10.645 +26.728 -06.432 +44.245 -06.432 +26.928

20260703.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 →

2026/20260703_EY · EY · 6 frames · 128.6 MB · 10:55:54–10:58:25 UT

10:58:25 UT · 30 ms

10:57:24 UT · 30 ms

10:56:24 UT · 30 ms

10:57:54 UT · 60 ms · over-exposed

10:56:54 UT · 60 ms · over-exposed

10:55:54 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.