Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 31 May 2024

‹ 30.05.2024 2024 02.06.2024 ›

Photosphere sunspot drawing and RDS evaluation

31.05.2024 photosphere drawing

High-resolution scan (3229 px)

Time
07:50 UT
Observer
Ergün EGE
g
5
f
44
R
94
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · DAI – 17Group 3 · DAI – 17 Group 4 · CRI – 5Group 4 · CRI – 5 Group 5 · EAC – 19Group 5 · EAC – 19
RDS data file (.gzd) 
[Gözlem]
Tarih=31.05.2024
Saat=07:50
Gözlemci=Ergün EGE
KontrolEden=Süleyman FİŞEK
Durumaçısı=-15.51
Enlemaçısı=-0.72
Boylamaçısı=31.48
Boylamfark=2
GKalite=3
GDurum=
Kuzeyaçısı=-0.6
Sırano=19992
AyRasatNo=23
RasatÖnceki=30.05.2024
RasatSonraki=02.06.2024

[Leke Grupları]
Grupsayısı=5:4:1
LekeSayısı=44:25:19
RölatifSayı=94:65:29
01=AX_ 02 +04.582 +24.133 055.613 +0.000 0000 0 +05.155 +24.705 +04.800 +23.561 +04.582 +24.205 +04.582 +24.610
02=AX_ 01 +16.107 +21.610 052.541 +0.000 0000 0 +16.535 +21.517 +15.679 +20.605 +16.107 +21.566 +16.107 +21.654
03=DAI 17 +24.532 +06.823 038.303 +0.000 0000 0 +28.983 +10.885 +20.800 +02.760 +24.532 +10.685 +24.532 +02.960
04=CRI 05 +21.164 -34.429 357.510 +0.000 0000 0 +22.133 -30.233 +20.195 -38.625 +21.164 -30.433 +21.164 -38.425
05=EAC 19 -18.249 -45.406 346.740 +0.000 0000 0 -15.268 -39.115 -21.231 -51.697 -18.249 -39.315 -18.249 -51.497
20240531.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 →

2024/20240531_ee · EE · 8 frames · 171.4 MB · 09:43:10–09:51:32 UT

09:43:10 UT · 30 ms 09:47:03 UT · 30 ms 09:44:29 UT · 40 ms 09:47:38 UT · 40 ms 09:50:42 UT · 50 ms · over-exposed 09:45:09 UT · 50 ms · over-exposed 09:51:32 UT · 60 ms · over-exposed 09:45:54 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.