Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 8 September 2026

‹ 07.09.2026 2026 09.09.2026 ›

Photosphere sunspot drawing and RDS evaluation

08.09.2026 photosphere drawing

High-resolution scan (3230 px)

Time
11:15 UT
Observer
Korhan YELKENCİ
g
7
f
26
R
96
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 4Group 1 · HS_ – 4 Group 2 · AX_ – 4Group 2 · AX_ – 4 Group 3 · CAI – 3Group 3 · CAI – 3 Group 4 · BXI – 9Group 4 · BXI – 9 Group 5 · HS_ – 2Group 5 · HS_ – 2 Group 6 · HS_ – 2Group 6 · HS_ – 2 Group 7 · HS_ – 2Group 7 · HS_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=8.09.2026
Saat=11:15
Gözlemci=Korhan YELKENCİ
KontrolEden=Süleyman FİŞEK
Durumaçısı=22.76
Enlemaçısı=7.25
Boylamaçısı=231.81
Boylamfark=0
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.6
Sırano=20563
AyRasatNo=8
RasatÖnceki=07.09.2026
RasatSonraki=09.09.2026

[Leke Grupları]
Grupsayısı=7:6:1
LekeSayısı=26:24:2
RölatifSayı=96:84:12
01=HS_ 04 +09.618 +32.460 263.856 +0.000 0000 0 +10.681 +33.472 +08.554 +30.620 +09.618 +33.386 +09.618 +31.534
02=AX_ 04 +10.641 +21.100 252.811 +0.000 0000 0 +12.880 +21.881 +09.194 +20.121 +00.000 +00.000 +00.000 +00.000
03=CAI 03 +13.116 -07.919 223.891 +0.000 0000 0 +14.130 -06.734 +12.219 -09.104 +00.000 +00.000 +00.000 +00.000
04=BXI 09 +19.971 -13.709 218.101 +0.000 0000 0 +20.609 -10.741 +19.332 -16.678 +19.971 -11.240 +19.971 -16.177
05=HS_ 02 +03.437 -29.195 202.615 +0.000 0000 0 +05.620 -27.673 +01.812 -30.718 +03.437 -28.173 +03.437 -30.217
06=HS_ 02 +12.435 -44.920 186.890 +0.000 0000 0 +13.487 -43.824 +11.384 -46.160 +12.435 -44.252 +12.435 -45.588
07=HS_ 02 -10.633 -45.977 185.833 +0.000 0000 0 -09.364 -44.719 -11.901 -47.236 -10.633 -45.219 -10.633 -46.736
20260908.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.