Images 05.08.2026 · Istanbul University Observatory Solar Observations

Solar Images Wednesday, 5 August 2026

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3228 px)

Time: 07:20 UT
Observer: Emre YILMAN
g: 4
f: 15
R: 55
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DKO – 6

Group 2 · HH_ – 1

Group 3 · DAI – 7

Group 4 · AX_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=5.08.2026
Saat=07:20
Gözlemci=Emre YILMAN
KontrolEden=Tuğba BOZTEPE
Durumaçısı=12.46
Enlemaçısı=6.06
Boylamaçısı=323.27
Boylamfark=3
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.4
Sırano=20532
AyRasatNo=5
RasatÖnceki=04.08.2026
RasatSonraki=06.08.2026

[Leke Grupları]
Grupsayısı=4:1:3
LekeSayısı=15:6:9
RölatifSayı=55:16:39
01=DKO 06 +16.524 +30.875 354.145 +0.000 0000 0 +19.607 +33.700 +13.441 +28.742 +16.524 +32.807 +16.524 +28.942
02=HH_ 01 -07.200 +70.826 034.960 +0.000 0000 0 -05.715 +72.299 -08.290 +69.352 -07.200 +71.799 -07.200 +69.852
03=DAI 07 -06.370 +27.132 350.402 +0.000 0000 0 -05.238 +30.943 -07.501 +23.321 -06.370 +30.743 -06.370 +23.521
04=AX_ 01 -16.219 -59.981 263.289 -1.000 0000 0 -16.219 -59.981 -16.219 -59.981

20260805.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 →

2026/20260805_ey · EY · 6 frames · 128.6 MB · 07:55:19–07:58:20 UT

07:58:20 UT · 30 ms

07:56:19 UT · 30 ms

07:57:19 UT · 30 ms

07:55:19 UT · 60 ms · over-exposed

07:56:49 UT · 60 ms · over-exposed

07:57:49 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.