Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 5 February 2024

‹ 03.02.2024 2024 06.02.2024 ›

Photosphere sunspot drawing and RDS evaluation

05.02.2024 photosphere drawing

High-resolution scan (3231 px)

Time
11:45 UT
Observer
Ergün EGE
g
10
f
43
R
143
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · BXO – 3Group 2 · BXO – 3 Group 3 · BXO – 3Group 3 · BXO – 3 Group 4 · CSO – 2Group 4 · CSO – 2 Group 5 · BXO – 2Group 5 · BXO – 2 Group 6 · CAI – 8Group 6 · CAI – 8 Group 7 · AX_ – 1Group 7 · AX_ – 1 Group 8 · BXO – 2Group 8 · BXO – 2 Group 9 · HS_ – 2Group 9 · HS_ – 2 Group 10 · FAI – 18Group 10 · FAI – 18
RDS data file (.gzd) 
[Gözlem]
Tarih=5.02.2024
Saat=11:45
Gözlemci=Ergün EGE
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=-13.73
Enlemaçısı=-6.28
Boylamaçısı=120.12
Boylamfark=0
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.4
Sırano=19912
AyRasatNo=4
RasatÖnceki=03.02.2024
RasatSonraki=06.02.2024

[Leke Grupları]
Grupsayısı=10:5:5
LekeSayısı=43:12:31
RölatifSayı=143:62:81
01=AX_ 02 +21.387 +36.642 156.762 +0.000 0000 0 +21.962 +38.111 +20.812 +35.174 +21.387 +37.610 +21.387 +35.674
02=BXO 03 +04.113 +32.985 153.105 +0.000 0000 0 +04.837 +34.989 +03.388 +30.981 +04.113 +34.489 +04.113 +31.481
03=BXO 03 +16.491 +11.238 131.358 +0.000 0000 0 +18.751 +15.440 +14.231 +07.431 +16.491 +14.844 +16.491 +07.631
04=CSO 02 +14.966 -27.446 092.674 +0.000 0000 0 +15.915 -24.455 +14.170 -30.438 +14.966 -24.655 +14.966 -30.238
05=BXO 02 +23.324 -28.872 091.248 +0.000 0000 0 +24.295 -27.158 +22.353 -30.585 +23.324 -27.358 +23.324 -30.385
06=CAI 08 -37.320 +53.294 173.414 +0.000 0000 0 -34.404 +58.930 -39.659 +48.495 -37.320 +57.893 -37.320 +48.695
07=AX_ 01 -11.846 +24.133 144.253 +0.000 0000 0 -11.504 +24.479 -12.188 +23.787 -11.846 +23.979 -11.846 +24.287
08=BXO 02 -05.730 -02.899 117.221 +0.000 0000 0 -03.545 -00.569 -06.601 -05.228 -05.730 -00.769 -05.730 -05.280
09=HS_ 02 -17.794 -19.227 100.893 +0.000 0000 0 -16.850 -17.728 -18.738 -20.727 -17.794 -18.227 -17.794 -20.226
10=FAI 18 -15.439 -71.462 048.659 +0.000 0000 0 -12.494 -62.508 -18.384 -80.415 -15.439 -62.708 -15.439 -80.215
20240205.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 →

2024/20240205_ee · EE · 3 frames · 64.3 MB · 11:49:50–11:51:31 UT

11:51:31 UT · 50 ms · over-exposed 11:50:52 UT · 40 ms 11:49:50 UT · 30 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.