Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 25 June 2022

‹ 24.06.2022 2022 26.06.2022 ›

Photosphere sunspot drawing and RDS evaluation

25.06.2022 photosphere drawing

High-resolution scan (3226 px)

Time
09:14 UT
Observer
Başar COŞKUNOĞLU
g
3
f
16
R
46
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EHI – 10Group 1 · EHI – 10 Group 2 · CSO – 4Group 2 · CSO – 4 Group 3 · AX_ – 2Group 3 · AX_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=25.06.2022
Saat=09:14
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=-5.26
Enlemaçısı=2.2
Boylamaçısı=348.15
Boylamfark=2
GKalite=3
GDurum=G.T , B.A
Kuzeyaçısı=-0.2
Sırano=19472
AyRasatNo=24
RasatÖnceki=24.06.2022
RasatSonraki=26.06.2022

[Leke Grupları]
Grupsayısı=3:1:2
LekeSayısı=16:10:6
RölatifSayı=46:20:26
01=EHI 10 +17.752 +65.611 053.761 +0.000 0000 0 +19.533 +72.758 +15.972 +58.465 +17.752 +72.558 +17.752 +58.665
02=CSO 04 -12.260 -25.255 322.895 +0.000 0000 0 -10.588 -22.583 -13.464 -27.928 -12.260 -22.783 -12.260 -27.728
03=AX_ 02 -07.150 -29.488 318.662 +0.000 0000 0 -06.810 -28.329 -07.220 -30.647 -07.150 -28.829 -07.150 -30.147
20220625.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 →

2022/20220625_bc · BC · 6 frames · 128.6 MB · 09:22:51–09:28:03 UT

09:22:51 UT · 40 ms 09:24:49 UT · 40 ms 09:24:10 UT · 40 ms 09:26:03 UT · 60 ms · over-exposed 09:27:27 UT · 60 ms · over-exposed 09:28:03 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.