Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 24 July 2023

‹ 23.07.2023 2023 25.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

24.07.2023 photosphere drawing

High-resolution scan (3233 px)

Time
10:50 UT
Observer
Ergün EGE
g
9
f
31
R
121
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DSI – 9Group 1 · DSI – 9 Group 2 · CSO – 3Group 2 · CSO – 3 Group 3 · HS_ – 2Group 3 · HS_ – 2 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · BXO – 4Group 6 · BXO – 4 Group 7 · AX_ – 2Group 7 · AX_ – 2 Group 8 · DSI – 5Group 8 · DSI – 5 Group 9 · CAO – 4Group 9 · CAO – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=24.07.2023
Saat=10:50
Gözlemci=Ergün EGE
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=7.58
Enlemaçısı=5.14
Boylamaçısı=185.94
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19772
AyRasatNo=23
RasatÖnceki=23.07.2023
RasatSonraki=25.07.2023

[Leke Grupları]
Grupsayısı=9:5:4
LekeSayısı=31:16:15
RölatifSayı=121:66:55
01=DSI 09 +08.473 +57.597 243.537 +0.000 0000 0 +11.551 +62.895 +05.396 +52.299 +08.473 +62.695 +08.473 +52.499
02=CSO 03 +21.732 +41.731 227.671 +0.000 0000 0 +23.449 +43.411 +20.160 +40.520 +21.732 +43.211 +21.732 +40.252
03=HS_ 02 +12.494 -11.612 174.328 +0.000 0000 0 +15.239 -10.283 +09.749 -12.941 +12.494 -10.783 +12.494 -12.441
04=AX_ 01 +18.805 -15.781 170.159 +0.000 0000 0 +19.850 -15.578 +18.525 -15.983 +18.805 -16.790 +18.805 -15.484
05=AX_ 01 +14.547 -26.798 159.142 +0.000 0000 0 +14.763 -26.527 +14.330 -27.700 +14.547 -26.712 +14.547 -26.885
06=BXO 04 -16.994 +46.587 232.527 +0.000 0000 0 -16.273 +48.284 -17.715 +44.891 -16.994 +47.784 -16.994 +45.391
07=AX_ 02 -25.765 +45.878 231.818 +0.000 0000 0 -25.447 +46.340 -26.820 +45.415 -25.765 +45.840 -25.765 +45.915
08=DSI 05 -08.180 +10.432 196.372 +0.000 0000 0 -06.745 +13.891 -09.614 +06.974 -08.180 +13.691 -08.180 +07.174
09=CAO 04 -10.676 -67.500 118.935 +0.000 0000 0 -08.419 -60.568 -12.933 -73.442 -10.676 -60.768 -10.676 -73.242
20230724.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 →

2023/20230724_ee · EE · 7 frames · 150.0 MB · 10:56:00–11:18:27 UT

11:02:56 UT · 40 ms 11:00:44 UT · 30 ms 10:56:00 UT · 30 ms 11:17:16 UT · 30 ms 11:17:51 UT · 40 ms 11:18:27 UT · 50 ms · over-exposed 11:07:15 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.