Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 26 July 2024

‹ 25.07.2024 2024 27.07.2024 ›

Photosphere sunspot drawing and RDS evaluation

26.07.2024 photosphere drawing

High-resolution scan (3230 px)

Time
07:35 UT
Observer
Ergün EGE
g
14
f
45
R
185
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · HS_ – 1Group 2 · HS_ – 1 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · HR_ – 1Group 5 · HR_ – 1 Group 6 · HS_ – 1Group 6 · HS_ – 1 Group 7 · DSC – 16Group 7 · DSC – 16 Group 8 · AX_ – 5Group 8 · AX_ – 5 Group 9 · AX_ – 2Group 9 · AX_ – 2 Group 10 · HS_ – 1Group 10 · HS_ – 1 Group 11 · BXI – 8Group 11 · BXI – 8 Group 12 · HS_ – 1Group 12 · HS_ – 1 Group 13 · AX_ – 1Group 13 · AX_ – 1 Group 14 · CSI – 5Group 14 · CSI – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=26.07.2024
Saat=07:35
Gözlemci=Ergün EGE
KontrolEden=Burçin TANIK
Durumaçısı=8.72
Enlemaçısı=5.37
Boylamaçısı=9.02
Boylamfark=1
GKalite=3
GDurum=Y.B
Kuzeyaçısı=-0.5
Sırano=20043
AyRasatNo=24
RasatÖnceki=25.07.2024
RasatSonraki=27.07.2024

[Leke Grupları]
Grupsayısı=14:4:10
LekeSayısı=45:4:41
RölatifSayı=185:44:141
01=AX_ 01 +17.599 +50.475 059.495 +0.000 0000 0 +17.866 +51.133 +17.332 +49.816 +17.599 +50.633 +17.599 +50.316
02=HS_ 01 +03.822 -28.216 340.804 +0.000 0000 0 +04.789 -27.165 +02.856 -29.268 +03.822 -27.664 +03.822 -28.767
03=AX_ 01 +02.943 -36.334 332.686 +0.000 0000 0 +03.332 -35.990 +02.554 -36.677 +02.943 -36.491 +02.943 -36.177
04=AX_ 01 +20.613 -83.273 285.747 +0.000 0000 0 +21.181 -82.828 +20.450 -83.718 +20.613 -83.328 +20.613 -83.218
05=HR_ 01 -08.458 +76.230 085.250 +0.000 0000 0 -08.940 +77.548 -08.822 +74.912 -08.458 +77.480 -08.458 +75.412
06=HS_ 01 -17.338 +55.887 064.907 +0.000 0000 0 -16.704 +56.871 -17.971 +54.903 -17.338 +56.371 -17.338 +55.403
07=DSC 16 -11.264 +09.900 018.290 +0.000 0000 0 -08.736 +13.796 -13.792 +04.221 -11.264 +13.596 -11.264 +04.421
08=AX_ 05 -13.263 -00.973 008.470 +0.000 0000 0 -11.919 +00.600 -14.607 -01.951 +00.000 +00.000 +00.000 +00.000
09=AX_ 02 -15.853 -08.817 000.203 +0.000 0000 0 -15.584 -08.459 -16.122 -09.175 -15.853 -08.959 -15.853 -08.675
10=HS_ 01 -03.340 -33.259 335.761 +0.000 0000 0 -02.678 -32.494 -04.200 -34.240 -03.340 -32.886 -03.340 -33.632
11=BXI 08 -06.953 -41.581 327.439 +0.000 0000 0 -05.637 -38.612 -08.268 -44.550 -06.953 -38.812 -06.953 -44.350
12=HS_ 01 -11.769 -42.178 326.842 +0.000 0000 0 -10.629 -41.190 -12.910 -43.166 -11.769 -41.690 -11.769 -42.666
13=AX_ 01 -09.470 -45.224 323.796 +0.000 0000 0 -09.242 -44.724 -09.698 -45.724 -09.470 -45.224 -09.470 -45.224
14=CSI 05 -09.314 -52.797 316.223 +0.000 0000 0 -08.170 -48.543 -10.611 -57.500 -09.314 -48.743 -09.314 -56.850
20240726.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 →

2024/20240726_ee · EE · 8 frames · 171.4 MB · 10:13:30–10:24:06 UT

10:15:18 UT · 50 ms 10:21:39 UT · 30 ms 10:23:31 UT · 40 ms 10:18:08 UT · 40 ms 10:24:06 UT · 30 ms 10:13:30 UT · 60 ms · over-exposed 10:22:56 UT · 50 ms · over-exposed 10:22:20 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.