Images 19.12.2025 · Istanbul University Observatory Solar Observations

Solar Images Friday, 19 December 2025

‹ 18.12.2025 2025 29.12.2025 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 11:00 UT
Observer: K.YELKENCİ+T.B.
g: 5
f: 9
R: 59
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1

Group 2 · BXI – 3

Group 3 · AX_ – 1

Group 4 · HS_ – 1

Group 5 · AX_ – 3

RDS data file (.gzd)

[Gözlem]
Tarih=19.12.2025
Saat=11:00
Gözlemci=K.YELKENCİ+T.B.
KontrolEden=Ergün EGE
Durumaçısı=8.06
Enlemaçısı=-1.46
Boylamaçısı=104.34
Boylamfark=1
GKalite=3
GDurum=H.S
Kuzeyaçısı=-0.5
Sırano=20408
AyRasatNo=12
RasatÖnceki=18.12.2025
RasatSonraki=29.12.2025

[Leke Grupları]
Grupsayısı=5:4:1
LekeSayısı=9:6:3
RölatifSayı=59:46:13
01=AX_ 01 +03.651 +66.799 171.139 -1.000 0000 0 +03.651 +66.799 +03.651 +66.799
02=BXI 03 +04.685 +19.110 123.351 +0.000 0000 0 +05.660 +20.712 +04.305 +17.311 +04.685 +20.311 +04.685 +17.910
03=AX_ 01 +13.511 -26.350 077.990 -1.000 0000 0 +13.511 -26.350 +13.511 -26.350
04=HS_ 01 +19.253 -56.186 048.154 +0.000 0000 0 +20.820 -55.770 +18.423 -57.295 +19.253 -55.924 +19.253 -56.449
05=AX_ 03 -13.609 -25.352 078.988 +0.000 0000 0 -13.175 -24.350 -14.430 -26.670 -13.609 -24.692 -13.609 -26.120

20251219.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.