Images 24.08.2026 · Istanbul University Observatory Solar Observations

Solar Images Monday, 24 August 2026

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3232 px)

Time: 09:15 UT
Observer: Burçin TANIK
g: 4
f: 38
R: 78
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 6

Group 2 · DAI – 10

Group 3 · EAC – 21

Group 4 · HS_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=24.08.2026
Saat=09:15
Gözlemci=Burçin TANIK
KontrolEden=Burçin TANIK
Durumaçısı=18.94
Enlemaçısı=7.01
Boylamaçısı=71.06
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-1.5
Sırano=20549
AyRasatNo=22
RasatÖnceki=23.08.2026
RasatSonraki=25.08.2026

[Leke Grupları]
Grupsayısı=4:3:1
LekeSayısı=38:37:1
RölatifSayı=78:67:11
01=BXI 06 +17.135 +43.672 114.732 +0.000 0000 0 +18.158 +45.965 +16.111 +41.379 +17.135 +45.765 +17.135 +41.579
02=DAI 10 +09.523 -07.479 063.581 +0.000 0000 0 +10.492 -04.280 +08.554 -10.931 +09.523 -04.228 +09.523 -10.731
03=EAC 21 +03.662 -21.219 049.841 +0.000 0000 0 +06.304 -14.838 +01.190 -27.600 +03.662 -15.380 +03.662 -27.400
04=HS_ 01 -08.158 -33.612 037.448 +0.000 0000 0 -07.411 -32.841 -08.905 -34.382 -08.158 -33.341 -08.158 -33.882

20260824.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 →

2026/20260824_bto · BTO · 4 frames · 85.7 MB · 09:18:44–09:24:06 UT

09:18:44 UT · 20 ms

09:20:53 UT · 30 ms

09:22:34 UT · 40 ms

09:24:06 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.