Images 12.10.2026 · Istanbul University Observatory Solar Observations

Solar Images Monday, 12 October 2026

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3227 px)

Time: 11:00 UT
Observer: Burçin TANIK
g: 5
f: 16
R: 66
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 2

Group 2 · AX_ – 1

Group 3 · HS_ – 1

Group 4 · BXO – 3

Group 5 · EAO – 9

RDS data file (.gzd)

[Gözlem]
Tarih=12.10.2026
Saat=11:00
Gözlemci=Burçin TANIK
KontrolEden=Melike ERYILMAZ
Durumaçısı=26.24
Enlemaçısı=6.08
Boylamaçısı=143.21
Boylamfark=1
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.5
Sırano=20589
AyRasatNo=12
RasatÖnceki=11.10.2026
RasatSonraki=18.10.2026

[Leke Grupları]
Grupsayısı=5:2:3
LekeSayısı=16:3:13
RölatifSayı=66:23:43
01=BXO 02 +08.532 +73.322 216.532 +0.000 0000 0 +09.227 +76.155 +07.837 +70.488 +08.532 +75.656 +08.532 +70.988
02=AX_ 01 +07.257 -53.371 089.839 -1.000 0000 0 +07.257 -53.371 +07.257 -53.371
03=HS_ 01 -12.697 +45.101 188.311 -1.000 0000 0 -12.156 +45.797 -13.238 +44.405
04=BXO 03 -07.484 +08.100 151.310 +0.000 0000 0 -06.656 +09.807 -08.312 +06.392 -07.484 +09.608 -07.484 +06.593
05=EAO 09 -13.967 -40.871 102.339 15.412 0000 0 -11.301 -35.102 -16.634 -46.640 -12.912 -36.638 -15.980 -44.599

20261012.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 →

2026/20261012_bto · BTO · 4 frames · 85.7 MB · 11:11:48–11:19:15 UT

Coronado H-α animations from frame sequences

No Coronado observation for this day.