Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 23 August 2024

‹ 22.08.2024 2024 24.08.2024 ›

Photosphere sunspot drawing and RDS evaluation

23.08.2024 photosphere drawing

High-resolution scan (3230 px)

Time
10:30 UT
Observer
Ergün EGE
g
11
f
80
R
190
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DSI – 6Group 1 · DSI – 6 Group 2 · AX_ – 2Group 2 · AX_ – 2 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · CAI – 8Group 5 · CAI – 8 Group 6 · BXO – 2Group 6 · BXO – 2 Group 7 · EKC – 16Group 7 · EKC – 16 Group 8 · HK_ – 3Group 8 · HK_ – 3 Group 9 · EAC – 16Group 9 · EAC – 16 Group 10 · DSI – 11Group 10 · DSI – 11 Group 11 · EKC – 14Group 11 · EKC – 14
RDS data file (.gzd) 
[Gözlem]
Tarih=23.08.2024
Saat=10:30
Gözlemci=Ergün EGE
KontrolEden=Korhan YELKENCİ
Durumaçısı=18.8
Enlemaçısı=6.99
Boylamaçısı=358.68
Boylamfark=1
GKalite=3
GDurum=
Kuzeyaçısı=-0.4
Sırano=20071
AyRasatNo=23
RasatÖnceki=22.08.2024
RasatSonraki=24.08.2024

[Leke Grupları]
Grupsayısı=11:6:5
LekeSayısı=80:20:60
RölatifSayı=190:80:110
01=DSI 06 +17.890 +41.975 040.655 +0.000 0000 0 +20.560 +45.905 +15.725 +38.450 +17.890 +45.705 +17.890 +38.245
02=AX_ 02 +22.525 +22.393 021.730 +0.000 0000 0 +22.808 +24.228 +22.242 +20.559 +22.525 +23.727 +22.525 +21.590
03=AX_ 01 +12.991 -00.154 358.526 +0.000 0000 0 +13.324 +00.147 +12.658 -00.456 +12.991 -00.353 +12.991 +00.450
04=HS_ 01 +06.466 -30.500 328.675 +0.000 0000 0 +07.350 -29.102 +05.582 -30.908 +06.466 -30.970 +06.466 -30.903
05=CAI 08 +08.700 -60.450 298.230 +0.000 0000 0 +10.487 -58.148 +05.527 -62.952 +08.700 -58.348 +08.700 -62.752
06=BXO 02 +22.183 -60.504 298.176 +0.000 0000 0 +23.254 -58.656 +21.111 -62.351 +22.183 -58.856 +22.183 -62.151
07=EKC 16 -10.799 +24.618 023.298 +0.000 0000 0 -08.117 +29.766 -13.481 +19.470 -10.799 +29.566 -10.799 +19.670
08=HK_ 03 -16.671 +10.129 008.809 +0.000 0000 0 -14.859 +12.586 -18.482 +07.673 -16.671 +12.850 -16.671 +08.172
09=EAC 16 -02.707 -08.224 350.456 +0.000 0000 0 -00.960 -03.840 -05.318 -13.364 -02.707 -03.284 -02.707 -13.164
10=DSI 11 -26.572 -26.680 332.612 +0.000 0000 0 -25.900 -21.240 -28.540 -30.896 -26.572 -21.440 -26.572 -30.696
11=EKC 14 -09.544 -45.604 313.760 +0.000 0000 0 -07.658 -39.836 -11.429 -51.371 -09.544 -40.360 -09.544 -51.171
20240823.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 →

2024/20240823_ee · EE · 7 frames · 150.0 MB · 10:25:27–10:39:03 UT

10:37:02 UT · 20 ms 10:37:38 UT · 30 ms 10:26:26 UT · 40 ms 10:38:29 UT · 40 ms 10:25:27 UT · 30 ms 10:39:03 UT · 50 ms · over-exposed 10:27:03 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.