Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 21 August 2024

‹ 20.08.2024 2024 22.08.2024 ›

Photosphere sunspot drawing and RDS evaluation

21.08.2024 photosphere drawing

High-resolution scan (3231 px)

Time
13:25 UT
Observer
Ergün EGE
g
12
f
52
R
172
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 2Group 1 · BXO – 2 Group 2 · DSI – 10Group 2 · DSI – 10 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · HS_ – 2Group 5 · HS_ – 2 Group 6 · HS_ – 1Group 6 · HS_ – 1 Group 7 · BXO – 2Group 7 · BXO – 2 Group 8 · EHC – 22Group 8 · EHC – 22 Group 9 · CHO – 4Group 9 · CHO – 4 Group 10 · AX_ – 1Group 10 · AX_ – 1 Group 11 · BXO – 2Group 11 · BXO – 2 Group 12 · CSO – 3Group 12 · CSO – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=21.08.2024
Saat=13:25
Gözlemci=Ergün EGE
KontrolEden=Süleyman FİŞEK
Durumaçısı=18.24
Enlemaçısı=6.93
Boylamaçısı=23.51
Boylamfark=1
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.5
Sırano=20069
AyRasatNo=21
RasatÖnceki=20.08.2024
RasatSonraki=22.08.2024

[Leke Grupları]
Grupsayısı=12:5:7
LekeSayısı=52:17:35
RölatifSayı=172:67:105
01=BXO 02 +26.510 +58.580 082.900 +0.000 0000 0 +27.376 +62.269 +24.727 +54.891 +26.510 +62.690 +26.510 +55.910
02=DSI 10 +18.795 +16.166 039.676 +0.000 0000 0 +21.127 +21.427 +16.463 +10.905 +18.795 +21.227 +18.795 +11.105
03=AX_ 02 +21.312 -00.872 022.638 +0.000 0000 0 +21.988 +00.300 +20.637 -01.747 +21.312 -00.349 +21.312 -01.395
04=AX_ 01 +28.126 -09.307 014.203 +0.000 0000 0 +28.430 -09.210 +27.821 -09.594 +28.126 -09.615 +28.126 -08.999
05=HS_ 02 +06.800 -54.631 328.879 +0.000 0000 0 +06.940 -53.499 +05.221 -55.764 +06.800 -53.999 +06.800 -55.264
06=HS_ 01 -07.454 +65.370 088.880 +0.000 0000 0 -06.719 +66.710 -08.189 +64.669 -07.454 +65.891 -07.454 +64.850
07=BXO 02 -05.378 +46.366 069.876 +0.000 0000 0 -04.271 +50.115 -06.484 +42.618 -05.378 +49.915 -05.378 +42.818
08=EHC 22 -10.929 +00.400 023.910 +0.000 0000 0 -08.512 +05.696 -13.347 -04.896 -10.929 +05.496 -10.929 -04.696
09=CHO 04 -16.599 -14.513 008.997 +0.000 0000 0 -14.619 -11.786 -18.578 -17.241 -16.599 -11.986 -16.599 -17.410
10=AX_ 01 -10.314 -46.481 337.290 +0.000 0000 0 -09.971 -46.950 -10.657 -46.866 -10.314 -46.939 -10.314 -46.230
11=BXO 02 -27.190 -51.734 331.776 +0.000 0000 0 -26.394 -50.106 -27.644 -53.361 -27.190 -50.607 -27.190 -52.861
12=CSO 03 -09.686 -70.503 313.700 +0.000 0000 0 -08.325 -65.569 -11.480 -75.437 -09.686 -65.769 -09.686 -75.237
20240821.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 →

2024/20240821_ee · EE · 5 frames · 107.1 MB · 13:25:18–13:32:13 UT

13:27:02 UT · 30 ms 13:26:21 UT · 30 ms 13:25:18 UT · 30 ms 13:32:13 UT · 50 ms 13:29:23 UT · 40 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.