Images 19.08.2025 · Istanbul University Observatory Solar Observations

Solar Images Tuesday, 19 August 2025

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3218 px)

Time: 12:00 UT
Observer: Olcay PLEVNE
g: 3
f: 5
R: 35
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1

Group 2 · CSI – 3

Group 3 · HS_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=19.08.2025
Saat=12:00
Gözlemci=Olcay PLEVNE
KontrolEden=Ergün EGE
Durumaçısı=17.52
Enlemaçısı=6.84
Boylamaçısı=273.17
Boylamfark=0
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=20325
AyRasatNo=13
RasatÖnceki=18.08.2025
RasatSonraki=20.08.2025

[Leke Grupları]
Grupsayısı=3:1:2
LekeSayısı=5:1:4
RölatifSayı=35:11:24
01=AX_ 01 +08.898 -55.277 217.893 -1.000 0000 0 +08.898 -55.277 +08.898 -55.277
02=CSI 03 -16.806 -16.661 256.509 +0.000 0000 0 -15.894 -14.348 -17.719 -18.975 -16.806 -14.548 -16.806 -18.775
03=HS_ 01 -07.649 -68.392 204.778 +0.000 0000 0 -06.524 -65.948 -08.775 -70.837 -07.649 -66.447 -07.649 -70.337

20250819.gzd

Chromosphere (H-α) FITS frames

No chromosphere observation for this day.

Coronado H-α animations from frame sequences

No Coronado observation for this day.