Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 31 October 2024

‹ 30.10.2024 2024 01.11.2024 ›

Photosphere sunspot drawing and RDS evaluation

31.10.2024 photosphere drawing

High-resolution scan (3229 px)

Time
08:40 UT
Observer
Süleyman FİŞEK
g
11
f
108
R
218
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ESC – 10Group 1 · ESC – 10 Group 2 · DSC – 13Group 2 · DSC – 13 Group 3 · EHI – 14Group 3 · EHI – 14 Group 4 · HH_ – 1Group 4 · HH_ – 1 Group 5 · HH_ – 1Group 5 · HH_ – 1 Group 6 · ESC – 27Group 6 · ESC – 27 Group 7 · EHC – 18Group 7 · EHC – 18 Group 8 · EHO – 16Group 8 · EHO – 16 Group 9 · BXO – 4Group 9 · BXO – 4 Group 10 · BXO – 3Group 10 · BXO – 3 Group 11 · AX_ – 1Group 11 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=31.10.2024
Saat=08:40
Gözlemci=Süleyman FİŞEK
KontrolEden=Ergün EGE
Durumaçısı=24.51
Enlemaçısı=4.43
Boylamaçısı=169.01
Boylamfark=2
GKalite=3
GDurum=G.T , B.A
Kuzeyaçısı=-0.6
Sırano=20134
AyRasatNo=27
RasatÖnceki=30.10.2024
RasatSonraki=01.11.2024

[Leke Grupları]
Grupsayısı=11:4:7
LekeSayısı=108:38:70
RölatifSayı=218:78:140
01=ESC 10 +25.150 +49.680 218.690 +0.000 0000 0 +26.628 +56.422 +23.402 +42.937 +25.150 +56.222 +25.150 +43.137
02=DSC 13 +27.705 +30.824 199.834 +0.000 0000 0 +29.646 +34.170 +25.764 +27.631 +27.705 +33.817 +27.705 +27.831
03=EHI 14 +15.843 -33.229 135.781 +0.000 0000 0 +18.670 -39.967 +13.618 -26.492 +15.843 -26.692 +15.843 -39.767
04=HH_ 01 +14.656 -57.876 111.134 +0.000 0000 0 +16.620 -55.385 +12.692 -60.367 +14.656 -55.885 +14.656 -59.867
05=HH_ 01 -10.599 +50.880 219.980 +0.000 0000 0 -09.513 +51.659 -11.685 +48.517 -10.599 +51.951 -10.599 +49.809
06=ESC 27 -06.362 +36.474 205.484 +0.000 0000 0 -02.580 +42.194 -10.143 +30.754 -06.362 +41.994 -06.362 +30.954
07=EHC 18 -17.813 +22.239 191.249 +0.000 0000 0 -15.832 +27.673 -19.794 +16.805 -17.813 +27.473 -17.813 +17.500
08=EHO 16 -13.463 +10.217 179.227 +0.000 0000 0 -09.271 +15.310 -17.655 +05.125 -13.463 +15.110 -13.463 +05.325
09=BXO 04 -15.774 -03.979 165.310 +0.000 0000 0 -15.150 -05.969 -16.397 -01.989 -15.774 -02.489 -15.774 -05.469
10=BXO 03 -13.237 -65.512 103.498 +0.000 0000 0 -12.396 -61.787 -14.790 -69.238 -13.237 -61.987 -13.237 -69.380
11=AX_ 01 -08.840 -69.440 099.570 -1.000 0000 0 -08.840 -69.440 -08.840 -69.440
20241031.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 →

2024/20241031_sf · SF · 6 frames · 128.6 MB · 09:15:21–09:21:36 UT

09:17:59 UT · 30 ms 09:20:49 UT · 30 ms 09:15:21 UT · 30 ms 09:19:35 UT · 60 ms · over-exposed 09:16:58 UT · 60 ms · over-exposed 09:21:36 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.