Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 21 June 2024

‹ 20.06.2024 2024 22.06.2024 ›

Photosphere sunspot drawing and RDS evaluation

21.06.2024 photosphere drawing

High-resolution scan (3231 px)

Time
08:55 UT
Observer
Ergün EGE
g
7
f
66
R
136
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EKC – 13Group 1 · EKC – 13 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · EKC – 12Group 4 · EKC – 12 Group 5 · EKC – 25Group 5 · EKC – 25 Group 6 · CSO – 7Group 6 · CSO – 7 Group 7 · BXO – 7Group 7 · BXO – 7
RDS data file (.gzd) 
[Gözlem]
Tarih=21.06.2024
Saat=08:55
Gözlemci=Ergün EGE
KontrolEden=Burçin TANIK
Durumaçısı=-6.82
Enlemaçısı=1.8
Boylamaçısı=112.94
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.5
Sırano=20011
AyRasatNo=19
RasatÖnceki=20.06.2024
RasatSonraki=22.06.2024

[Leke Grupları]
Grupsayısı=7:3:4
LekeSayısı=66:15:51
RölatifSayı=136:45:91
01=EKC 13 +09.489 +48.366 161.306 +0.000 0000 0 +12.119 +54.239 +06.859 +42.493 +09.489 +54.390 +09.489 +42.693
02=AX_ 01 +14.908 -56.299 056.641 +0.000 0000 0 +15.204 -55.827 +14.613 -56.770 +14.908 -56.327 +14.908 -56.271
03=AX_ 01 +24.789 -82.243 030.697 +0.000 0000 0 +25.100 -80.186 +24.477 -84.301 +24.789 -80.685 +24.789 -83.800
04=EKC 12 -25.677 +52.618 165.558 +0.000 0000 0 -22.989 +59.897 -28.364 +45.339 -25.677 +59.697 -25.677 +45.539
05=EKC 25 -13.100 +42.489 155.429 +0.000 0000 0 -08.140 +48.794 -17.861 +36.184 -13.100 +48.594 -13.100 +36.384
06=CSO 07 -13.554 -49.991 062.949 +0.000 0000 0 -12.510 -45.236 -15.580 -54.745 -13.554 -45.436 -13.554 -54.545
07=BXO 07 -04.847 -59.184 053.756 +0.000 0000 0 -02.802 -55.357 -06.892 -63.100 -04.847 -55.557 -04.847 -62.810
20240621.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 →

2024/20240621_ee · EE · 8 frames · 171.4 MB · 08:58:24–09:17:17 UT

09:15:44 UT · 40 ms 08:59:26 UT · 40 ms 08:58:24 UT · 30 ms 09:14:50 UT · 30 ms 09:00:29 UT · 50 ms · over-exposed 09:16:39 UT · 50 ms · over-exposed 09:01:51 UT · 60 ms · over-exposed 09:17:17 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.