Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 18 October 2024

‹ 17.10.2024 2024 19.10.2024 ›

Photosphere sunspot drawing and RDS evaluation

18.10.2024 photosphere drawing

High-resolution scan (3229 px)

Time
07:00 UT
Observer
Ergün EGE
g
7
f
35
R
105
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DAC – 8Group 1 · DAC – 8 Group 2 · EKC – 7Group 2 · EKC – 7 Group 3 · DAI – 9Group 3 · DAI – 9 Group 4 · DSI – 4Group 4 · DSI – 4 Group 5 · CSO – 3Group 5 · CSO – 3 Group 6 · CSO – 3Group 6 · CSO – 3 Group 7 · HS_ – 1Group 7 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=18.10.2024
Saat=07:00
Gözlemci=Ergün EGE
KontrolEden=Korhan YELKENCİ
Durumaçısı=25.99
Enlemaçısı=5.61
Boylamaçısı=341.37
Boylamfark=3
GKalite=3
GDurum=H.S
Kuzeyaçısı=-0.7
Sırano=20122
AyRasatNo=15
RasatÖnceki=17.10.2024
RasatSonraki=19.10.2024

[Leke Grupları]
Grupsayısı=7:1:6
LekeSayısı=35:8:27
RölatifSayı=105:18:87
01=DAC 08 +10.319 +23.772 005.142 +0.000 0000 0 +11.907 +28.106 +08.731 +19.439 +10.319 +27.906 +10.319 +19.639
02=EKC 07 -07.885 +62.425 043.795 +0.000 0000 0 -03.468 +70.830 -12.302 +54.768 -07.885 +69.883 -07.885 +54.968
03=DAI 09 -11.116 +03.195 344.565 +0.000 0000 0 -09.212 +06.559 -13.200 -00.169 -11.116 +06.359 -11.116 +00.310
04=DSI 04 -06.384 -11.739 329.631 +0.000 0000 0 -04.343 -08.440 -08.426 -15.434 -06.384 -08.244 -06.384 -15.234
05=CSO 03 -04.840 -20.964 320.406 +0.000 0000 0 -04.170 -19.392 -05.509 -22.536 -04.840 -19.892 -04.840 -22.360
06=CSO 03 -07.328 -26.561 314.809 +0.000 0000 0 -06.206 -24.433 -08.449 -28.689 -07.328 -24.633 -07.328 -28.489
07=HS_ 01 -07.841 -78.288 263.820 +0.000 0000 0 -07.352 -76.838 -08.330 -79.739 -07.841 -77.338 -07.841 -79.239
20241018.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 →

2024/20241018_ee · EE · 7 frames · 150.0 MB · 07:17:12–07:33:49 UT

07:33:14 UT · 40 ms 07:24:08 UT · 50 ms 07:19:57 UT · 40 ms 07:28:32 UT · 30 ms 07:17:12 UT · 30 ms 07:33:49 UT · 50 ms 07:27:42 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.