Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 17 October 2023

‹ 15.10.2023 2023 19.10.2023 ›

Photosphere sunspot drawing and RDS evaluation

17.10.2023 photosphere drawing

High-resolution scan (3230 px)

Time
06:50 UT
Observer
Korhan YELKENCİ
g
4
f
28
R
68
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CAI – 9Group 1 · CAI – 9 Group 2 · CAI – 17Group 2 · CAI – 17 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · HS_ – 1Group 4 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=17.10.2023
Saat=06:50
Gözlemci=Korhan YELKENCİ
KontrolEden=Burçin TANIK
Durumaçısı=26.09
Enlemaçısı=5.74
Boylamaçısı=145.41
Boylamfark=3
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.1
Sırano=19849
AyRasatNo=14
RasatÖnceki=15.10.2023
RasatSonraki=19.10.2023

[Leke Grupları]
Grupsayısı=4:2:2
LekeSayısı=28:26:2
RölatifSayı=68:46:22
01=CAI 09 +04.627 +21.817 167.227 23.843 0000 0 +05.979 +24.656 +03.276 +18.979 +05.779 +24.400 +03.476 +19.179
02=CAI 17 +12.824 -03.200 142.390 36.449 0000 0 +15.966 +01.191 +09.681 -07.231 +15.766 +00.991 +09.881 -07.310
03=AX_ 01 -18.411 +33.407 178.817 -1.000 0000 0 -18.411 +33.407 -18.411 +33.407
04=HS_ 01 -09.795 -68.830 077.327 +0.000 0000 0 -09.000 -66.951 -10.590 -69.214 -09.795 -68.199 -09.795 -69.462
20231017.gzd

Chromosphere (H-α) FITS frames

No chromosphere observation for this day.

Coronado H-α animations from frame sequences

No Coronado observation for this day.