Images 18.10.2026 · Istanbul University Observatory Solar Observations

Solar Images Sunday, 18 October 2026

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 07:15 UT
Observer: Melike ERYILMAZ
g: 3
f: 35
R: 65
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EKC – 21

Group 2 · AX_ – 2

Group 3 · EKC – 12

RDS data file (.gzd)

[Gözlem]
Tarih=18.10.2026
Saat=07:15
Gözlemci=Melike ERYILMAZ
KontrolEden=Emre YILMAN
Durumaçısı=26.02
Enlemaçısı=5.64
Boylamaçısı=66.13
Boylamfark=3
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.4
Sırano=20590
AyRasatNo=13
RasatÖnceki=12.10.2026
RasatSonraki=20.10.2026

[Leke Grupları]
Grupsayısı=3:2:1
LekeSayısı=35:23:12
RölatifSayı=65:43:22
01=EKC 21 +06.830 +02.637 068.767 +0.000 0000 0 +09.180 +07.889 +03.147 -02.615 +06.830 +07.689 +06.830 -02.415
02=AX_ 02 +13.350 -23.820 042.310 +0.000 0000 0 +13.689 -22.898 +13.100 -24.743 +13.350 -23.397 +13.350 -24.243
03=EKC 12 -16.319 +34.949 101.790 +0.000 0000 0 -12.460 +41.646 -20.178 +28.252 -16.319 +41.446 -16.319 +28.452

20261018.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.