Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 20 August 2024

‹ 19.08.2024 2024 21.08.2024 ›

Photosphere sunspot drawing and RDS evaluation

20.08.2024 photosphere drawing

High-resolution scan (3231 px)

Time
07:45 UT
Observer
Süleyman FİŞEK
g
13
f
102
R
232
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EHO – 5Group 1 · EHO – 5 Group 2 · CRI – 12Group 2 · CRI – 12 Group 3 · EHI – 20Group 3 · EHI – 20 Group 4 · DAI – 10Group 4 · DAI – 10 Group 5 · HH_ – 1Group 5 · HH_ – 1 Group 6 · CKI – 9Group 6 · CKI – 9 Group 7 · CSO – 2Group 7 · CSO – 2 Group 8 · CRO – 4Group 8 · CRO – 4 Group 9 · EKC – 24Group 9 · EKC – 24 Group 10 · CHO – 2Group 10 · CHO – 2 Group 11 · EKC – 11Group 11 · EKC – 11 Group 12 · AX_ – 1Group 12 · AX_ – 1 Group 13 · HH_ – 1Group 13 · HH_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=20.08.2024
Saat=07:45
Gözlemci=Süleyman FİŞEK
KontrolEden=Ergün EGE
Durumaçısı=17.85
Enlemaçısı=6.88
Boylamaçısı=39.84
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.5
Sırano=20068
AyRasatNo=20
RasatÖnceki=19.08.2024
RasatSonraki=21.08.2024

[Leke Grupları]
Grupsayısı=13:5:8
LekeSayısı=102:48:54
RölatifSayı=232:98:134
01=EHO 05 +15.744 +71.644 111.484 51.310 0000 0 +19.973 +77.493 +11.514 +65.795 +12.349 +75.716 +16.215 +72.613
02=CRI 12 +27.131 +42.663 082.503 29.330 0000 0 +29.180 +45.605 +25.244 +39.720 +25.883 +44.732 +28.249 +40.514
03=EHI 20 +18.967 +00.117 039.957 16.345 0000 0 +21.456 +05.183 +16.478 -04.949 +17.618 +03.570 +19.110 -01.527
04=DAI 10 +21.215 -17.386 022.454 25.925 0000 0 +23.440 -13.910 +19.386 -20.862 +21.887 -14.914 +19.909 -18.987
05=HH_ 01 +06.333 -71.376 328.464 +0.000 0000 0 +07.990 -69.722 +05.568 -73.300 +06.333 -70.870 +06.333 -72.665
06=CKI 09 -13.685 +65.622 105.462 14.741 0000 0 -11.360 +71.658 -16.334 +59.586 -15.500 +69.506 -12.610 +60.362
07=CSO 02 -07.119 +50.783 090.623 +0.000 0000 0 -05.833 +51.893 -08.405 +49.673 +00.000 +00.000 +00.000 +00.000
08=CRO 04 -04.288 +30.306 070.146 18.461 0000 0 -02.865 +33.221 -05.712 +27.391 -03.713 +32.266 -05.219 +27.751
09=EKC 24 -10.907 -15.561 024.279 01.698 0000 0 -08.388 -10.760 -13.426 -21.470 -10.689 -19.699 -10.466 -12.156
10=CHO 02 -16.831 -31.288 008.552 33.880 0000 0 -14.466 -28.154 -19.195 -34.421 -16.646 -30.287 -19.110 -34.143
11=EKC 11 -02.646 -52.700 347.833 08.325 0000 0 -00.304 -46.967 -04.988 -57.460 -02.273 -48.112 -01.562 -52.981
12=AX_ 01 -11.341 -63.371 336.469 -1.000 0000 0 -11.341 -63.371 -11.341 -63.371
13=HH_ 01 -08.471 -84.148 315.692 +0.000 0000 0 -07.530 -81.715 -09.413 -86.580 -08.471 -82.215 -08.471 -86.810
20240820.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 →

2024/20240820_sf · SF · 6 frames · 128.6 MB · 08:22:29–08:31:22 UT

08:25:41 UT · 30 ms 08:22:29 UT · 30 ms 08:29:36 UT · 30 ms 08:24:23 UT · 60 ms · over-exposed 08:31:22 UT · 60 ms · over-exposed 08:28:25 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.