Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 7 March 2026

‹ 06.03.2026 2026 08.03.2026 ›

Photosphere sunspot drawing and RDS evaluation

07.03.2026 photosphere drawing

High-resolution scan (3230 px)

Time
07:00 UT
Observer
Süleyman FİŞEK
g
5
f
17
R
67
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HH_ – 1Group 1 · HH_ – 1 Group 2 · DHO – 3Group 2 · DHO – 3 Group 3 · EHI – 8Group 3 · EHI – 8 Group 4 · EHO – 4Group 4 · EHO – 4 Group 5 · AX_ – 1Group 5 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=7.03.2026
Saat=07:00
Gözlemci=Süleyman FİŞEK
KontrolEden=Süleyman FİŞEK
Durumaçısı=-22.95
Enlemaçısı=-7.25
Boylamaçısı=159.33
Boylamfark=3
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=20431
AyRasatNo=5
RasatÖnceki=06.03.2026
RasatSonraki=08.03.2026

[Leke Grupları]
Grupsayısı=5:4:1
LekeSayısı=17:16:1
RölatifSayı=67:56:11
01=HH_ 01 +18.896 +78.870 238.200 +0.000 0000 0 +19.924 +81.810 +17.867 +76.658 +18.896 +80.946 +18.896 +76.794
02=DHO 03 +15.728 +49.570 208.387 +0.000 0000 0 +17.730 +51.612 +13.725 +46.502 +15.728 +51.412 +15.728 +46.702
03=EHI 08 +08.910 +15.230 174.560 +0.000 0000 0 +09.915 +21.302 +06.268 +09.158 +08.910 +21.102 +08.910 +09.358
04=EHO 04 +09.740 -09.750 150.255 +0.000 0000 0 +10.536 -03.871 +07.611 -14.280 +09.740 -04.710 +09.740 -14.800
05=AX_ 01 -08.798 +01.482 160.812 +0.000 0000 0 -08.490 +01.827 -09.106 +01.137 -08.798 +01.327 -08.798 +01.637
20260307.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 →

2026/20260307_sf · SF · 6 frames · 128.6 MB · 07:16:00–07:18:59 UT

07:18:29 UT · 30 ms 07:16:00 UT · 30 ms 07:17:29 UT · 30 ms 07:17:59 UT · 60 ms · over-exposed 07:18:59 UT · 60 ms · over-exposed 07:16:59 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.