Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 6 May 2026

‹ 02.05.2026 2026 07.05.2026 ›

Photosphere sunspot drawing and RDS evaluation

06.05.2026 photosphere drawing

High-resolution scan (3230 px)

Time
08:32 UT
Observer
Süleyman FİŞEK
g
6
f
37
R
97
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HH_ – 1Group 1 · HH_ – 1 Group 2 · CRI – 7Group 2 · CRI – 7 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · BXI – 14Group 4 · BXI – 14 Group 5 · CHO – 9Group 5 · CHO – 9 Group 6 · DHO – 5Group 6 · DHO – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=6.05.2026
Saat=08:32
Gözlemci=Süleyman FİŞEK
KontrolEden=İrem ÖZDEMİR
Durumaçısı=-23.08
Enlemaçısı=-3.65
Boylamaçısı=86.68
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.6
Sırano=20460
AyRasatNo=2
RasatÖnceki=02.05.2026
RasatSonraki=07.05.2026

[Leke Grupları]
Grupsayısı=6:3:3
LekeSayısı=37:9:28
RölatifSayı=97:39:58
01=HH_ 01 +05.736 +77.740 164.420 -1.000 0000 0 +06.823 +79.885 +04.649 +75.595
02=CRI 07 +12.597 -08.613 078.670 +0.000 0000 0 +13.354 -04.588 +11.841 -12.637 +12.597 -05.890 +12.597 -12.137
03=HS_ 01 +22.707 -46.296 040.384 -1.000 0000 0 +23.523 -45.346 +21.891 -47.246
04=BXI 14 -04.535 +36.237 122.917 +0.000 0000 0 -03.650 +39.767 -06.600 +32.708 -04.535 +39.567 -04.535 +32.908
05=CHO 09 -15.454 +05.406 092.860 +0.000 0000 0 -13.413 +11.128 -17.495 -00.316 -15.454 +10.928 -15.454 -00.116
06=DHO 05 -16.230 -38.759 047.921 +0.000 0000 0 -14.937 -34.350 -17.523 -43.169 -16.230 -34.549 -16.230 -42.968
20260506.gzd

Chromosphere (H-α) FITS frames

H-α

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 →

2026/20260506_sf · SF · 6 frames · 128.6 MB · 08:42:02–08:44:33 UT

08:42:32 UT · 30 ms 08:44:33 UT · 30 ms 08:43:32 UT · 30 ms 08:44:02 UT · 60 ms · over-exposed 08:43:02 UT · 60 ms · over-exposed 08:42:02 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.