Images 20.09.2026 · Istanbul University Observatory Solar Observations

Solar Images Sunday, 20 September 2026

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 08:30 UT
Observer: Melike ERYILMAZ
g: 3
f: 7
R: 37
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 5

Group 2 · AX_ – 1

Group 3 · HH_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=20.09.2026
Saat=08:30
Gözlemci=Melike ERYILMAZ
KontrolEden=Melike ERYILMAZ
Durumaçısı=24.84
Enlemaçısı=7.11
Boylamaçısı=74.89
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.3
Sırano=20571
AyRasatNo=16
RasatÖnceki=19.09.2026
RasatSonraki=21.09.2026

[Leke Grupları]
Grupsayısı=3:1:2
LekeSayısı=7:5:2
RölatifSayı=37:15:22
01=BXI 05 +11.844 -01.660 073.824 +0.000 0000 0 +13.638 +00.636 +10.510 -02.768 +11.844 +00.436 +11.844 -02.568
02=AX_ 01 -03.708 +44.490 119.380 -1.000 0000 0 -03.708 +44.490 -03.708 +44.490
03=HH_ 01 -13.672 -72.250 002.640 +0.000 0000 0 -12.926 -70.630 -14.419 -73.870 -13.672 -71.130 -13.672 -73.370

20260920.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.