Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 28 October 2023

‹ 27.10.2023 2023 29.10.2023 ›

Photosphere sunspot drawing and RDS evaluation

28.10.2023 photosphere drawing

High-resolution scan (3230 px)

Time
08:00 UT
Observer
Ergün EGE
g
3
f
6
R
36
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · BXO – 2Group 2 · BXO – 2 Group 3 · AX_ – 2Group 3 · AX_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=28.10.2023
Saat=08:00
Gözlemci=Ergün EGE
KontrolEden=Olcay PLEVNE
Durumaçısı=25.08
Enlemaçısı=4.79
Boylamaçısı=359.69
Boylamfark=2
GKalite=3
GDurum=H.S , K.T
Kuzeyaçısı=-0.1
Sırano=19857
AyRasatNo=22
RasatÖnceki=27.10.2023
RasatSonraki=29.10.2023

[Leke Grupları]
Grupsayısı=3:3:0
LekeSayısı=6:6:0
RölatifSayı=36:36:0
01=AX_ 02 +13.181 +40.485 040.175 +0.000 0000 0 +13.517 +41.486 +12.846 +39.484 +13.181 +40.986 +13.181 +39.984
02=BXO 02 +20.702 -25.197 334.493 +0.000 0000 0 +21.648 -22.565 +19.757 -27.829 +20.702 -22.765 +20.702 -27.629
03=AX_ 02 +16.951 -56.567 303.123 +0.000 0000 0 +17.367 -55.494 +16.535 -57.641 +16.951 -55.993 +16.951 -57.141
20231028.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 →

2023/20231028_ee · EE · 8 frames · 171.4 MB · 08:13:02–08:27:51 UT

08:27:51 UT · 30 ms 08:23:40 UT · 40 ms 08:13:02 UT · 40 ms 08:15:14 UT · 50 ms 08:25:50 UT · 60 ms · over-exposed 08:24:25 UT · 50 ms 08:16:45 UT · 60 ms · over-exposed 08:26:54 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.