Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 22 July 2023

‹ 21.07.2023 2023 23.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

22.07.2023 photosphere drawing

High-resolution scan (3231 px)

Time
10:05 UT
Observer
Ergün EGE
g
7
f
51
R
121
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CAO – 6Group 1 · CAO – 6 Group 2 · FAI – 23Group 2 · FAI – 23 Group 3 · HS_ – 2Group 3 · HS_ – 2 Group 4 · CSI – 9Group 4 · CSI – 9 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · AX_ – 5Group 6 · AX_ – 5 Group 7 · CAO – 5Group 7 · CAO – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=22.07.2023
Saat=10:05
Gözlemci=Ergün EGE
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=6.71
Enlemaçısı=4.96
Boylamaçısı=212.81
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.2
Sırano=19770
AyRasatNo=21
RasatÖnceki=21.07.2023
RasatSonraki=23.07.2023

[Leke Grupları]
Grupsayısı=7:4:3
LekeSayısı=51:40:11
RölatifSayı=121:80:41
01=CAO 06 +23.920 +54.501 267.311 +0.000 0000 0 +25.832 +62.845 +20.351 +46.157 +23.920 +62.645 +23.920 +46.357
02=FAI 23 +08.376 +33.500 245.860 +0.000 0000 0 +11.454 +41.405 +05.298 +24.695 +08.376 +41.205 +08.376 +24.895
03=HS_ 02 +22.714 +15.984 228.794 +0.000 0000 0 +24.270 +17.421 +21.158 +14.547 +22.714 +16.921 +22.714 +15.470
04=CSI 09 +15.793 -45.599 167.211 +0.000 0000 0 +19.340 -36.854 +12.246 -54.345 +15.793 -37.540 +15.793 -54.145
05=AX_ 01 -16.467 +21.467 234.277 +0.000 0000 0 -16.194 +21.731 -16.739 +21.203 -16.467 +21.231 -16.467 +21.703
06=AX_ 05 -25.341 +20.210 232.831 +0.000 0000 0 -24.638 +21.156 -26.440 +18.885 -25.341 +20.845 -25.341 +19.574
07=CAO 05 -08.309 -16.186 196.624 +0.000 0000 0 -06.840 -12.266 -09.778 -20.105 -08.309 -12.466 -08.309 -19.905
20230722.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 →

2023/20230722_ee · EE · 8 frames · 171.4 MB · 10:16:50–10:29:07 UT

10:16:50 UT · 30 ms 10:17:57 UT · 40 ms 10:27:58 UT · 40 ms · over-exposed 10:27:24 UT · 30 ms 10:28:32 UT · 50 ms · over-exposed 10:18:36 UT · 50 ms · over-exposed 10:29:07 UT · 60 ms · over-exposed 10:19:11 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.